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Mercury_7043505

Which interaction within an ecosystem is characterized by gradual change from one community of organisms to another?

D

Question: Which interaction within an ecosystem is characterized by gradual change from one community of organisms to another? (A) symbiosis (B) food webs (C) energy pyramids (D) succession

Answer: (D) succession

Answer: (B) food webs

Question: Which interaction within an ecosystem is characterized by gradual change from one community of organisms to another? (A) symbiosis (B) food webs (C) energy pyramids (D) succession Answer: (D) succession

Mercury_SC_401733

The continuous changes of a seed to an adult plant that produces seeds is known as a

D

Question: The continuous changes of a seed to an adult plant that produces seeds is known as a (A) lunar cycle. (B) weekly cycle. (C) daily cycle. (D) life cycle.

Answer: (D) life cycle.

Answer: (C) daily cycle.

Question: The continuous changes of a seed to an adult plant that produces seeds is known as a (A) lunar cycle. (B) weekly cycle. (C) daily cycle. (D) life cycle. Answer: (D) life cycle.

Mercury_SC_402087

When someone plays the flute, sound is produced because the air in the flute is

C

Question: When someone plays the flute, sound is produced because the air in the flute is (A) hot. (B) neutral. (C) vibrating. (D) vaporizing.

Answer: (C) vibrating.

Answer: (D) vaporizing.

Question: When someone plays the flute, sound is produced because the air in the flute is (A) hot. (B) neutral. (C) vibrating. (D) vaporizing. Answer: (C) vibrating.

MSA_2015_5_24

Scientists compared Pluto with other objects in the solar system and found that Pluto is smaller than Earth's moon. This finding caused scientists to question whether Pluto is a planet because

B

Question: Scientists compared Pluto with other objects in the solar system and found that Pluto is smaller than Earth's moon. This finding caused scientists to question whether Pluto is a planet because (A) Pluto gets less sunlight than Earth's moon (B) the other planets are much larger than Pluto (C) the other planets have moons and Pluto does not (D) Pluto rotates on its axis and the other planets do not

Answer: (B) the other planets are much larger than Pluto

Answer: (C) the other planets have moons and Pluto does not

Question: Scientists compared Pluto with other objects in the solar system and found that Pluto is smaller than Earth's moon. This finding caused scientists to question whether Pluto is a planet because (A) Pluto gets less sunlight than Earth's moon (B) the other planets are much larger than Pluto (C) the other planets have moons and Pluto does not (D) Pluto rotates on its axis and the other planets do not Answer: (B) the other planets are much larger than Pluto

Mercury_SC_401233

When an iron nail wrapped in a copper wire is attached to a circuit, it forms

D

Question: When an iron nail wrapped in a copper wire is attached to a circuit, it forms (A) a battery. (B) an engine. (C) an insulator. (D) an electromagnet.

Answer: (D) an electromagnet.

Answer: (A) a battery.

Question: When an iron nail wrapped in a copper wire is attached to a circuit, it forms (A) a battery. (B) an engine. (C) an insulator. (D) an electromagnet. Answer: (D) an electromagnet.

Mercury_7217788

Which gas accounts for the largest percentage of greenhouse gases in the atmosphere?

D

Question: Which gas accounts for the largest percentage of greenhouse gases in the atmosphere? (A) carbon monoxide (B) carbon dioxide (C) nitrous oxide (D) water vapor

Answer: (D) water vapor

Answer: (B) carbon dioxide

Question: Which gas accounts for the largest percentage of greenhouse gases in the atmosphere? (A) carbon monoxide (B) carbon dioxide (C) nitrous oxide (D) water vapor Answer: (D) water vapor

ACTAAP_2007_7_20

Which human body system attacks viruses and bacteria once they have invaded the body?

D

Question: Which human body system attacks viruses and bacteria once they have invaded the body? (A) circulatory (B) endocrine (C) digestive (D) immune

Answer: (D) immune

Answer: (A) circulatory

Question: Which human body system attacks viruses and bacteria once they have invaded the body? (A) circulatory (B) endocrine (C) digestive (D) immune Answer: (D) immune

Mercury_7221165

The atoms that make up oxygen gas

A

Question: The atoms that make up oxygen gas (A) share two covalent bonds. (B) have a definite shape. (C) share a pair of neutrons. (D) have two free electrons.

Answer: (A) share two covalent bonds.

Answer: (D) have two free electrons.

Question: The atoms that make up oxygen gas (A) share two covalent bonds. (B) have a definite shape. (C) share a pair of neutrons. (D) have two free electrons. Answer: (A) share two covalent bonds.

VASoL_2007_3_36

A student wants to cut a piece of string for a class activity. The length of the string is measured BEST in which units?

D

Question: A student wants to cut a piece of string for a class activity. The length of the string is measured BEST in which units? (A) Gallons (B) Liters (C) Miles (D) Centimeters

Answer: (D) Centimeters

Answer: (B) Liters

Question: A student wants to cut a piece of string for a class activity. The length of the string is measured BEST in which units? (A) Gallons (B) Liters (C) Miles (D) Centimeters Answer: (D) Centimeters

Mercury_400498

If the atomic mass number of an atom is 35, which statement is most accurate?

D

Question: If the atomic mass number of an atom is 35, which statement is most accurate? (A) The atom is not an isotope. (B) The atomic number is less than 17. (C) The atom has an odd number of neutrons. (D) The number of protons does not equal the number of neutrons.

Answer: (D) The number of protons does not equal the number of neutrons.

Answer: (A) The atom is not an isotope.

Question: If the atomic mass number of an atom is 35, which statement is most accurate? (A) The atom is not an isotope. (B) The atomic number is less than 17. (C) The atom has an odd number of neutrons. (D) The number of protons does not equal the number of neutrons. Answer: (D) The number of protons does not equal the number of neutrons.

Mercury_7188388

Biotic components need to be recycled through an ecosystem. Which type of organisms are best able to recycle nutrients back into the ecosystem?

A

Question: Biotic components need to be recycled through an ecosystem. Which type of organisms are best able to recycle nutrients back into the ecosystem? (A) decomposers (B) predators (C) producers (D) scavengers

Answer: (A) decomposers

Answer: (D) scavengers

Question: Biotic components need to be recycled through an ecosystem. Which type of organisms are best able to recycle nutrients back into the ecosystem? (A) decomposers (B) predators (C) producers (D) scavengers Answer: (A) decomposers

Mercury_7136115

Roger visited his grandfather who lives on a farm. While he was there, he helped his grandfather move hay out of the barn. As Roger worked in the barn he began sneezing. Which system of the body most likely caused Roger to sneeze?

D

Question: Roger visited his grandfather who lives on a farm. While he was there, he helped his grandfather move hay out of the barn. As Roger worked in the barn he began sneezing. Which system of the body most likely caused Roger to sneeze? (A) circulatory (B) excretory (C) digestive (D) immune

Answer: (D) immune

Answer: (C) digestive

Question: Roger visited his grandfather who lives on a farm. While he was there, he helped his grandfather move hay out of the barn. As Roger worked in the barn he began sneezing. Which system of the body most likely caused Roger to sneeze? (A) circulatory (B) excretory (C) digestive (D) immune Answer: (D) immune

ACTAAP_2013_7_9

Why should plants be included in investigations about the water cycle?

C

Question: Why should plants be included in investigations about the water cycle? (A) Plants speed up the water cycle by removing carbon from the air. (B) Plants start the water cycle when they make water in photosynthesis. (C) Plants are part of the water cycle through the process of transpiration. (D) Plants stop the water cycle because they absorb it and stop the flow to streams.

Answer: (C) Plants are part of the water cycle through the process of transpiration.

Answer: (B) Plants start the water cycle when they make water in photosynthesis.

Question: Why should plants be included in investigations about the water cycle? (A) Plants speed up the water cycle by removing carbon from the air. (B) Plants start the water cycle when they make water in photosynthesis. (C) Plants are part of the water cycle through the process of transpiration. (D) Plants stop the water cycle because they absorb it and stop the flow to streams. Answer: (C) Plants are part of the water cycle through the process of transpiration.

AKDE&ED_2012_4_19

Which statement best identifies a basic need of all animals?

A

Question: Which statement best identifies a basic need of all animals? (A) They need to eat. (B) They need to hide. (C) They need to jump. (D) They need to smell.

Answer: (A) They need to eat.

Answer: (D) They need to smell.

Question: Which statement best identifies a basic need of all animals? (A) They need to eat. (B) They need to hide. (C) They need to jump. (D) They need to smell. Answer: (A) They need to eat.

MCAS_2016_5_13

Which of the following describes an instinctive behavior?

D

Question: Which of the following describes an instinctive behavior? (A) a behavior that occurs only in adult fish (B) a behavior that occurs only in small mammals (C) a behavior that an animal learns how to do over time (D) a behavior that an animal is born knowing how to do

Answer: (D) a behavior that an animal is born knowing how to do

Answer: (C) a behavior that an animal learns how to do over time

Question: Which of the following describes an instinctive behavior? (A) a behavior that occurs only in adult fish (B) a behavior that occurs only in small mammals (C) a behavior that an animal learns how to do over time (D) a behavior that an animal is born knowing how to do Answer: (D) a behavior that an animal is born knowing how to do

Mercury_7267873

Which of these provide the best evidence that life could develop on Mars?

D

Question: Which of these provide the best evidence that life could develop on Mars? (A) its atmospheric gases (B) its surface temperatures (C) its craters and rocky surface (D) its ice and organic molecules

Answer: (D) its ice and organic molecules

Answer: (A) its atmospheric gases

Question: Which of these provide the best evidence that life could develop on Mars? (A) its atmospheric gases (B) its surface temperatures (C) its craters and rocky surface (D) its ice and organic molecules Answer: (D) its ice and organic molecules

Mercury_SC_407162

The primary reason that plants are important for an ecosystem is because they

A

Question: The primary reason that plants are important for an ecosystem is because they (A) provide energy for consumers. (B) depend on other organisms for shelter. (C) break down dead animal matter. (D) consume nutrients for energy.

Answer: (A) provide energy for consumers.

Answer: (D) consume nutrients for energy.

Question: The primary reason that plants are important for an ecosystem is because they (A) provide energy for consumers. (B) depend on other organisms for shelter. (C) break down dead animal matter. (D) consume nutrients for energy. Answer: (A) provide energy for consumers.

Mercury_7008890

Energy from the Sun reaches Earth by

A

Question: Energy from the Sun reaches Earth by (A) radiation. (B) conduction. (C) convection. (D) thermal expansion.

Answer: (A) radiation.

Answer: (B) conduction.

Question: Energy from the Sun reaches Earth by (A) radiation. (B) conduction. (C) convection. (D) thermal expansion. Answer: (A) radiation.

Mercury_7235900

Scientists study the current conditions of many solar system objects to gain insight into conditions early in the history of Earth. Which phenomenon most closely models current theories of early Earth?

B

Question: Scientists study the current conditions of many solar system objects to gain insight into conditions early in the history of Earth. Which phenomenon most closely models current theories of early Earth? (A) liquid forming valleys on Mars (B) hundreds of active volcanoes on Io (C) rock and ice forming the core of Neptune (D) ice covering the entire surface of Europa

Answer: (B) hundreds of active volcanoes on Io

Answer: (D) ice covering the entire surface of Europa

Question: Scientists study the current conditions of many solar system objects to gain insight into conditions early in the history of Earth. Which phenomenon most closely models current theories of early Earth? (A) liquid forming valleys on Mars (B) hundreds of active volcanoes on Io (C) rock and ice forming the core of Neptune (D) ice covering the entire surface of Europa Answer: (B) hundreds of active volcanoes on Io

Mercury_SC_408323

Jonathan places a pot of water on a stove. As the water boils, how does the state of the water change?

B

Question: Jonathan places a pot of water on a stove. As the water boils, how does the state of the water change? (A) from gas to liquid (B) from liquid to gas (C) from liquid to solid (D) from solid to liquid

Answer: (B) from liquid to gas

Answer: (A) from gas to liquid

Question: Jonathan places a pot of water on a stove. As the water boils, how does the state of the water change? (A) from gas to liquid (B) from liquid to gas (C) from liquid to solid (D) from solid to liquid Answer: (B) from liquid to gas

Mercury_404795

Animal cells obtain energy by

B

Question: Animal cells obtain energy by (A) processing sunlight. (B) absorbing nutrients. (C) growing. (D) dividing.

Answer: (B) absorbing nutrients.

Answer: (C) growing.

Question: Animal cells obtain energy by (A) processing sunlight. (B) absorbing nutrients. (C) growing. (D) dividing. Answer: (B) absorbing nutrients.

Mercury_7071628

Which illness is associated with a weakened immune system in the body?

B

Question: Which illness is associated with a weakened immune system in the body? (A) tetanus (B) cancer (C) measles (D) rabies

Answer: (B) cancer

Answer: (D) rabies

Question: Which illness is associated with a weakened immune system in the body? (A) tetanus (B) cancer (C) measles (D) rabies Answer: (B) cancer

Mercury_7183645

In the human kidney, urea from the blood is filtered through the glomerular membrane into a nephron. The movement of urea across this membrane occurs without an input of energy. Which factor is the most likely reason urea absorption does not require energy?

D

Question: In the human kidney, urea from the blood is filtered through the glomerular membrane into a nephron. The movement of urea across this membrane occurs without an input of energy. Which factor is the most likely reason urea absorption does not require energy? (A) a pH imbalance (B) a pressure difference (C) a temperature increase (D) a concentration gradient

Answer: (D) a concentration gradient

Answer: (B) a pressure difference

Question: In the human kidney, urea from the blood is filtered through the glomerular membrane into a nephron. The movement of urea across this membrane occurs without an input of energy. Which factor is the most likely reason urea absorption does not require energy? (A) a pH imbalance (B) a pressure difference (C) a temperature increase (D) a concentration gradient Answer: (D) a concentration gradient

Mercury_7115448

The greatest amount of diversity can be found among which type of organism?

C

Question: The greatest amount of diversity can be found among which type of organism? (A) plants (B) animals (C) bacteria (D) fungi

Answer: (C) bacteria

Answer: (B) animals

Question: The greatest amount of diversity can be found among which type of organism? (A) plants (B) animals (C) bacteria (D) fungi Answer: (C) bacteria

Mercury_7223125

Which energy type is common enough in Nevada to make a significant contribution to the renewable energy needs of the state?

B

Question: Which energy type is common enough in Nevada to make a significant contribution to the renewable energy needs of the state? (A) coal (B) geothermal (C) natural gas (D) petroleum

Answer: (B) geothermal

Answer: (C) natural gas

Question: Which energy type is common enough in Nevada to make a significant contribution to the renewable energy needs of the state? (A) coal (B) geothermal (C) natural gas (D) petroleum Answer: (B) geothermal

Mercury_7207428

Until recently the Grand Canyon was thought to be about 5-6 million years old. Recently a scientist gathered data and wrote a paper for a scientific journal that indicated the canyon is about 17 million years old. Before this new information about the canyon is accepted, which of these needs to occur?

D

Question: Until recently the Grand Canyon was thought to be about 5-6 million years old. Recently a scientist gathered data and wrote a paper for a scientific journal that indicated the canyon is about 17 million years old. Before this new information about the canyon is accepted, which of these needs to occur? (A) The scientist needs to publish additional papers. (B) The scientist needs to obtain government support. (C) Other scientists need to state their beliefs. (D) Many scientists need to evaluate the data.

Answer: (D) Many scientists need to evaluate the data.

Answer: (C) Other scientists need to state their beliefs.

Question: Until recently the Grand Canyon was thought to be about 5-6 million years old. Recently a scientist gathered data and wrote a paper for a scientific journal that indicated the canyon is about 17 million years old. Before this new information about the canyon is accepted, which of these needs to occur? (A) The scientist needs to publish additional papers. (B) The scientist needs to obtain government support. (C) Other scientists need to state their beliefs. (D) Many scientists need to evaluate the data. Answer: (D) Many scientists need to evaluate the data.

Mercury_SC_400220

Which human trait is most likely inherited from a parent?

D

Question: Which human trait is most likely inherited from a parent? (A) learning to ride a bike (B) holding a spoon (C) reading a book (D) height

Answer: (D) height

Answer: (B) holding a spoon

Question: Which human trait is most likely inherited from a parent? (A) learning to ride a bike (B) holding a spoon (C) reading a book (D) height Answer: (D) height

MCAS_2005_9_2

Foam weather stripping is often placed in the frames of doors and windows in a home. What is the purpose of this weather stripping?

C

Question: Foam weather stripping is often placed in the frames of doors and windows in a home. What is the purpose of this weather stripping? (A) The weather stripping increases heat transfer by radiation. (B) Heat is conducted quickly through the weather stripping. (C) The weather stripping reduces heat loss due to convection. (D) Heat can transfer through the weather stripping due to reflection.

Answer: (C) The weather stripping reduces heat loss due to convection.

Answer: (D) Heat can transfer through the weather stripping due to reflection.

Question: Foam weather stripping is often placed in the frames of doors and windows in a home. What is the purpose of this weather stripping? (A) The weather stripping increases heat transfer by radiation. (B) Heat is conducted quickly through the weather stripping. (C) The weather stripping reduces heat loss due to convection. (D) Heat can transfer through the weather stripping due to reflection. Answer: (C) The weather stripping reduces heat loss due to convection.

NYSEDREGENTS_2004_8_1

The items listed below were found in a science classroom. * a heart made of plastic with many of its parts labeled * clay formed to look like Earth and other planets * a giant plastic plant cell with removable cell parts These items are all examples of

1

Question: The items listed below were found in a science classroom. * a heart made of plastic with many of its parts labeled * clay formed to look like Earth and other planets * a giant plastic plant cell with removable cell parts These items are all examples of (1) models (2) experiments (3) variables (4) controls

Answer: (1) models

Answer: (3) variables

Question: The items listed below were found in a science classroom. * a heart made of plastic with many of its parts labeled * clay formed to look like Earth and other planets * a giant plastic plant cell with removable cell parts These items are all examples of (1) models (2) experiments (3) variables (4) controls Answer: (1) models

MCAS_2008_8_5701

For a technology project, Kyle came up with an idea to build a model bridge. He wants his bridge to span 50 cm and to support a 1 kg object. According to the engineering design process, which of the following should be Kyle's next step?

B

Question: For a technology project, Kyle came up with an idea to build a model bridge. He wants his bridge to span 50 cm and to support a 1 kg object. According to the engineering design process, which of the following should be Kyle's next step? (A) construct prototypes of different kinds of bridges (B) research the different designs of bridges (C) gather the materials needed to build the bridge (D) make a drawing to show how to build the bridge

Answer: (B) research the different designs of bridges

Answer: (A) construct prototypes of different kinds of bridges

Question: For a technology project, Kyle came up with an idea to build a model bridge. He wants his bridge to span 50 cm and to support a 1 kg object. According to the engineering design process, which of the following should be Kyle's next step? (A) construct prototypes of different kinds of bridges (B) research the different designs of bridges (C) gather the materials needed to build the bridge (D) make a drawing to show how to build the bridge Answer: (B) research the different designs of bridges

TIMSS_2011_8_pg118

Light travels fastest through which of the following?

D

Question: Light travels fastest through which of the following? (A) air (B) glass (C) water (D) a vacuum

Answer: (D) a vacuum

Answer: (A) air

Question: Light travels fastest through which of the following? (A) air (B) glass (C) water (D) a vacuum Answer: (D) a vacuum

Mercury_SC_408414

Different systems of the human body perform different functions. Which system takes oxygen from the air to be moved by the circulatory system?

A

Question: Different systems of the human body perform different functions. Which system takes oxygen from the air to be moved by the circulatory system? (A) the respiratory system (B) the digestive system (C) the nervous system (D) the skeletal system

Answer: (A) the respiratory system

Answer: (C) the nervous system

Question: Different systems of the human body perform different functions. Which system takes oxygen from the air to be moved by the circulatory system? (A) the respiratory system (B) the digestive system (C) the nervous system (D) the skeletal system Answer: (A) the respiratory system

MCAS_2004_5_4

A solar cell turns sunlight into another form of energy. A solar cell is most like what natural structure?

B

Question: A solar cell turns sunlight into another form of energy. A solar cell is most like what natural structure? (A) an elephant's ears (B) a plant's leaves (C) a deer's hooves (D) a tree's roots

Answer: (B) a plant's leaves

Answer: (D) a tree's roots

Question: A solar cell turns sunlight into another form of energy. A solar cell is most like what natural structure? (A) an elephant's ears (B) a plant's leaves (C) a deer's hooves (D) a tree's roots Answer: (B) a plant's leaves

MCAS_2012_5_18

The Sun appears to move across the sky each day, rising in the east and setting in the west. What causes this apparent motion?

A

Question: The Sun appears to move across the sky each day, rising in the east and setting in the west. What causes this apparent motion? (A) the rotation of Earth on its axis (B) the revolution of the Sun around Earth (C) the Earth’s distance from the Sun (D) the properties of Earth’s atmosphere

Answer: (A) the rotation of Earth on its axis

Answer: (B) the revolution of the Sun around Earth

Question: The Sun appears to move across the sky each day, rising in the east and setting in the west. What causes this apparent motion? (A) the rotation of Earth on its axis (B) the revolution of the Sun around Earth (C) the Earth’s distance from the Sun (D) the properties of Earth’s atmosphere Answer: (A) the rotation of Earth on its axis

OHAT_2009_5_44

What causes a blue block to appear blue in the sunlight?

C

Question: What causes a blue block to appear blue in the sunlight? (A) The block absorbs all blue light. (B) The block bends (refracts) all blue light. (C) Only blue light is reflected by the block. (D) Only blue light passes through the block.

Answer: (C) Only blue light is reflected by the block.

Answer: (D) Only blue light passes through the block.

Question: What causes a blue block to appear blue in the sunlight? (A) The block absorbs all blue light. (B) The block bends (refracts) all blue light. (C) Only blue light is reflected by the block. (D) Only blue light passes through the block. Answer: (C) Only blue light is reflected by the block.

Mercury_7121958

A student determined the density of different bars of soap. Which should the student most likely do to check the accuracy of the results?

D

Question: A student determined the density of different bars of soap. Which should the student most likely do to check the accuracy of the results? (A) complete the experiment in one day (B) test multiple brands of soap (C) record data in metric units (D) repeat the experiment

Answer: (D) repeat the experiment

Answer: (A) complete the experiment in one day

Question: A student determined the density of different bars of soap. Which should the student most likely do to check the accuracy of the results? (A) complete the experiment in one day (B) test multiple brands of soap (C) record data in metric units (D) repeat the experiment Answer: (D) repeat the experiment

Mercury_SC_400024

Which method below would be the best way to determine if an egg, plastic foam, a piece of wood, or a candle would float on water?

A

Question: Which method below would be the best way to determine if an egg, plastic foam, a piece of wood, or a candle would float on water? (A) observing each object in water (B) measuring the size of each object (C) calculating the weight of the objects (D) comparing the shapes of the objects

Answer: (A) observing each object in water

Answer: (D) comparing the shapes of the objects

Question: Which method below would be the best way to determine if an egg, plastic foam, a piece of wood, or a candle would float on water? (A) observing each object in water (B) measuring the size of each object (C) calculating the weight of the objects (D) comparing the shapes of the objects Answer: (A) observing each object in water

Mercury_SC_405024

Liam lives in the Northern Hemisphere of Earth and plays in the snow in December. His friend lives in the Southern Hemisphere of Earth and plays at the beach in December. What is the best explanation for why this is possible?

A

Question: Liam lives in the Northern Hemisphere of Earth and plays in the snow in December. His friend lives in the Southern Hemisphere of Earth and plays at the beach in December. What is the best explanation for why this is possible? (A) tilt of Earth on its axis (B) rotation of Earth on its axis (C) revolution of Earth around the Sun (D) revolution of the Moon around Earth

Answer: (A) tilt of Earth on its axis

Answer: (B) rotation of Earth on its axis

Question: Liam lives in the Northern Hemisphere of Earth and plays in the snow in December. His friend lives in the Southern Hemisphere of Earth and plays at the beach in December. What is the best explanation for why this is possible? (A) tilt of Earth on its axis (B) rotation of Earth on its axis (C) revolution of Earth around the Sun (D) revolution of the Moon around Earth Answer: (A) tilt of Earth on its axis

CSZ_2004_5_CSZ10300

A scientist needs to take a picture of the well-ordered arrangements of the atoms and molecules within a substance. Which of the following instruments would be best for the scientist to use?

C

Question: A scientist needs to take a picture of the well-ordered arrangements of the atoms and molecules within a substance. Which of the following instruments would be best for the scientist to use? (A) a laser light with holograph. (B) a seismograph. (C) an electron microscope. (D) a stereoscope.

Answer: (C) an electron microscope.

Answer: (D) a stereoscope.

Question: A scientist needs to take a picture of the well-ordered arrangements of the atoms and molecules within a substance. Which of the following instruments would be best for the scientist to use? (A) a laser light with holograph. (B) a seismograph. (C) an electron microscope. (D) a stereoscope. Answer: (C) an electron microscope.

Mercury_7212433

Gold atoms can be identified based on the number of which subatomic particles?

D

Question: Gold atoms can be identified based on the number of which subatomic particles? (A) neutrons (B) electrons (C) nuclei (D) protons

Answer: (D) protons

Answer: (B) electrons

Question: Gold atoms can be identified based on the number of which subatomic particles? (A) neutrons (B) electrons (C) nuclei (D) protons Answer: (D) protons

Mercury_SC_402050

Which is needed for both boiling and melting to occur?

C

Question: Which is needed for both boiling and melting to occur? (A) solids (B) gases (C) heat (D) pressure

Answer: (C) heat

Answer: (D) pressure

Question: Which is needed for both boiling and melting to occur? (A) solids (B) gases (C) heat (D) pressure Answer: (C) heat

NAEP_2005_8_S11+15

Which of the following is an example of genetic engineering?

C

Question: Which of the following is an example of genetic engineering? (A) Growing a whole plant from a single cell. (B) Finding the sequences of bases in plant DNA. (C) Inserting a gene into plants that makes them resistant to insects. (D) Attaching the root of one type of plant to the stem of another type of plant.

Answer: (C) Inserting a gene into plants that makes them resistant to insects.

Answer: (B) Finding the sequences of bases in plant DNA.

Question: Which of the following is an example of genetic engineering? (A) Growing a whole plant from a single cell. (B) Finding the sequences of bases in plant DNA. (C) Inserting a gene into plants that makes them resistant to insects. (D) Attaching the root of one type of plant to the stem of another type of plant. Answer: (C) Inserting a gene into plants that makes them resistant to insects.

MCAS_2009_8_8

Which of the following is an example of a container that is filled with a pure substance rather than with a mixture?

C

Question: Which of the following is an example of a container that is filled with a pure substance rather than with a mixture? (A) a tire filled with air (B) a jar filled with salt water (C) a balloon filled with helium (D) a glass filled with chocolate milk

Answer: (C) a balloon filled with helium

Answer: (A) a tire filled with air

Question: Which of the following is an example of a container that is filled with a pure substance rather than with a mixture? (A) a tire filled with air (B) a jar filled with salt water (C) a balloon filled with helium (D) a glass filled with chocolate milk Answer: (C) a balloon filled with helium

CSZ_2006_5_CSZ10326

Which best describes the role of the esophagus in digestion?

C

Question: Which best describes the role of the esophagus in digestion? (A) It releases acid and mixes food. (B) It aids in absorption of nutrients from food. (C) It carries food from the mouth to the stomach. (D) It carries food from the stomach to the intestines.

Answer: (C) It carries food from the mouth to the stomach.

Answer: (D) It carries food from the stomach to the intestines.

Question: Which best describes the role of the esophagus in digestion? (A) It releases acid and mixes food. (B) It aids in absorption of nutrients from food. (C) It carries food from the mouth to the stomach. (D) It carries food from the stomach to the intestines. Answer: (C) It carries food from the mouth to the stomach.

AKDE&ED_2012_4_46

Which change is most likely caused by a thunderstorm?

B

Question: Which change is most likely caused by a thunderstorm? (A) a glacier moving (B) a stream flooding (C) a volcano erupting (D) a mountain forming

Answer: (B) a stream flooding

Answer: (D) a mountain forming

Question: Which change is most likely caused by a thunderstorm? (A) a glacier moving (B) a stream flooding (C) a volcano erupting (D) a mountain forming Answer: (B) a stream flooding

Mercury_7213938

Which is an example of an organism that has been selectively bred for a particular genetic trait?

D

Question: Which is an example of an organism that has been selectively bred for a particular genetic trait? (A) cats that eat mice (B) cows that graze on grass (C) pigs that form large herds (D) chickens that lay large eggs

Answer: (D) chickens that lay large eggs

Answer: (C) pigs that form large herds

Question: Which is an example of an organism that has been selectively bred for a particular genetic trait? (A) cats that eat mice (B) cows that graze on grass (C) pigs that form large herds (D) chickens that lay large eggs Answer: (D) chickens that lay large eggs

Mercury_7033618

Which of these can be described as a system of stars, gases, dust, and other matter that orbits a common center of gravity?

B

Question: Which of these can be described as a system of stars, gases, dust, and other matter that orbits a common center of gravity? (A) an asteroid (B) a galaxy (C) a nebula (D) a comet

Answer: (B) a galaxy

Answer: (C) a nebula

Question: Which of these can be described as a system of stars, gases, dust, and other matter that orbits a common center of gravity? (A) an asteroid (B) a galaxy (C) a nebula (D) a comet Answer: (B) a galaxy

Mercury_7144743

The Florida Bog Frog (Lithobates okaloosae) inhabits shallow stream overflows in three counties in Florida. With such a small geographic habitat, any change in the frog's environment could cause drastic changes in the population. Which would most likely affect the frog population if acid rain changed the pH of the water?

B

Question: The Florida Bog Frog (Lithobates okaloosae) inhabits shallow stream overflows in three counties in Florida. With such a small geographic habitat, any change in the frog's environment could cause drastic changes in the population. Which would most likely affect the frog population if acid rain changed the pH of the water? (A) Prey insects would become inedible. (B) Tadpoles would be unable to survive. (C) Breeding sites would become unavailable. (D) Predators would choose another food source.

Answer: (B) Tadpoles would be unable to survive.

Answer: (C) Breeding sites would become unavailable.

Question: The Florida Bog Frog (Lithobates okaloosae) inhabits shallow stream overflows in three counties in Florida. With such a small geographic habitat, any change in the frog's environment could cause drastic changes in the population. Which would most likely affect the frog population if acid rain changed the pH of the water? (A) Prey insects would become inedible. (B) Tadpoles would be unable to survive. (C) Breeding sites would become unavailable. (D) Predators would choose another food source. Answer: (B) Tadpoles would be unable to survive.

Mercury_7248325

Which function do kidneys provide to maintain homeostasis?

D

Question: Which function do kidneys provide to maintain homeostasis? (A) the removal of excess heat from the body (B) the removal of carbon dioxide from the body (C) the removal of excess oxygen from the blood (D) the removal of nitrogenous wastes from the blood

Answer: (D) the removal of nitrogenous wastes from the blood

Answer: (C) the removal of excess oxygen from the blood

Question: Which function do kidneys provide to maintain homeostasis? (A) the removal of excess heat from the body (B) the removal of carbon dioxide from the body (C) the removal of excess oxygen from the blood (D) the removal of nitrogenous wastes from the blood Answer: (D) the removal of nitrogenous wastes from the blood

Mercury_7001750

While running, leg muscles work to move leg bones, and the skin helps to

A

Question: While running, leg muscles work to move leg bones, and the skin helps to (A) regulate body temperature. (B) sense small changes in the heart rate. (C) transport nutrients to muscles. (D) maintain oxygen levels in the blood.

Answer: (A) regulate body temperature.

Answer: (C) transport nutrients to muscles.

Question: While running, leg muscles work to move leg bones, and the skin helps to (A) regulate body temperature. (B) sense small changes in the heart rate. (C) transport nutrients to muscles. (D) maintain oxygen levels in the blood. Answer: (A) regulate body temperature.

Mercury_7166898

Rolanda is growing tomato plants in her garden. She has created a compost pile and has been adding compost around her tomato plants to help fertilize them. Compost is solid waste in which organic material is broken down by microorganisms in the presence of oxygen to where it can be safely stored, handled, and applied to the environment. On what does Rolanda primarily rely in order for composting to work?

D

Question: Rolanda is growing tomato plants in her garden. She has created a compost pile and has been adding compost around her tomato plants to help fertilize them. Compost is solid waste in which organic material is broken down by microorganisms in the presence of oxygen to where it can be safely stored, handled, and applied to the environment. On what does Rolanda primarily rely in order for composting to work? (A) producers (B) consumers (C) scavengers (D) decomposers

Answer: (D) decomposers

Answer: (A) producers

Question: Rolanda is growing tomato plants in her garden. She has created a compost pile and has been adding compost around her tomato plants to help fertilize them. Compost is solid waste in which organic material is broken down by microorganisms in the presence of oxygen to where it can be safely stored, handled, and applied to the environment. On what does Rolanda primarily rely in order for composting to work? (A) producers (B) consumers (C) scavengers (D) decomposers Answer: (D) decomposers

Mercury_7164605

Some students were on a tour exploring the inside of a cave. While the students were in the cave, they realized they heard an echo every time that they spoke. Which most likely caused the echo to occur?

D

Question: Some students were on a tour exploring the inside of a cave. While the students were in the cave, they realized they heard an echo every time that they spoke. Which most likely caused the echo to occur? (A) the accumulation of the sound waves (B) the diffraction of the sound waves (C) the refraction of the sound waves (D) the reflection of the sound waves

Answer: (D) the reflection of the sound waves

Answer: (A) the accumulation of the sound waves

Question: Some students were on a tour exploring the inside of a cave. While the students were in the cave, they realized they heard an echo every time that they spoke. Which most likely caused the echo to occur? (A) the accumulation of the sound waves (B) the diffraction of the sound waves (C) the refraction of the sound waves (D) the reflection of the sound waves Answer: (D) the reflection of the sound waves

Mercury_7114048

A scientist uses angstrom units to measure the distance between two points. The scientist is most likely measuring the distance between two

A

Question: A scientist uses angstrom units to measure the distance between two points. The scientist is most likely measuring the distance between two (A) atoms. (B) cities. (C) continents. (D) stars.

Answer: (A) atoms.

Answer: (B) cities.

Question: A scientist uses angstrom units to measure the distance between two points. The scientist is most likely measuring the distance between two (A) atoms. (B) cities. (C) continents. (D) stars. Answer: (A) atoms.

Mercury_7220745

Based on the evidence available at the time, early models of the solar system stated that all objects in space orbited Earth. In the 16th century, an astronomer reevaluated the evidence and proposed a model of the solar system that is still in use. What part of this model corrected the mistake in previous solar system models?

A

Question: Based on the evidence available at the time, early models of the solar system stated that all objects in space orbited Earth. In the 16th century, an astronomer reevaluated the evidence and proposed a model of the solar system that is still in use. What part of this model corrected the mistake in previous solar system models? (A) The Sun is at the center of this model. (B) Earth is the largest object in this model. (C) This model contains more than one star. (D) This model shows that Earth is stationary.

Answer: (A) The Sun is at the center of this model.

Answer: (C) This model contains more than one star.

Question: Based on the evidence available at the time, early models of the solar system stated that all objects in space orbited Earth. In the 16th century, an astronomer reevaluated the evidence and proposed a model of the solar system that is still in use. What part of this model corrected the mistake in previous solar system models? (A) The Sun is at the center of this model. (B) Earth is the largest object in this model. (C) This model contains more than one star. (D) This model shows that Earth is stationary. Answer: (A) The Sun is at the center of this model.

Mercury_7137655

The hormone insulin is secreted by the pancreas. Which activity is most likely to trigger an increase in the levels of insulin circulating in the blood?

B

Question: The hormone insulin is secreted by the pancreas. Which activity is most likely to trigger an increase in the levels of insulin circulating in the blood? (A) driving (B) eating (C) jogging (D) sleeping

Answer: (B) eating

Answer: (A) driving

Question: The hormone insulin is secreted by the pancreas. Which activity is most likely to trigger an increase in the levels of insulin circulating in the blood? (A) driving (B) eating (C) jogging (D) sleeping Answer: (B) eating

Mercury_7094850

In gym class a student kicks a soccer ball high into the air. As the ball goes upward, which type of energy is increasing?

C

Question: In gym class a student kicks a soccer ball high into the air. As the ball goes upward, which type of energy is increasing? (A) kinetic energy (B) thermal energy (C) potential energy (D) mechanical energy

Answer: (C) potential energy

Answer: (A) kinetic energy

Question: In gym class a student kicks a soccer ball high into the air. As the ball goes upward, which type of energy is increasing? (A) kinetic energy (B) thermal energy (C) potential energy (D) mechanical energy Answer: (C) potential energy

Mercury_7043733

Which best describes the orbit of the Moon around Earth?

C

Question: Which best describes the orbit of the Moon around Earth? (A) circular with a period of about one month (B) circular with a period of about one week (C) elliptical with a period of about one month (D) elliptical with a period of about one week

Answer: (C) elliptical with a period of about one month

Answer: (A) circular with a period of about one month

Question: Which best describes the orbit of the Moon around Earth? (A) circular with a period of about one month (B) circular with a period of about one week (C) elliptical with a period of about one month (D) elliptical with a period of about one week Answer: (C) elliptical with a period of about one month

OHAT_2011_8_41

In any physical or chemical process, what two quantities are always conserved?

A

Question: In any physical or chemical process, what two quantities are always conserved? (A) matter and total energy (B) light and acoustic energy (C) density and thermal energy (D) gravity and potential energy

Answer: (A) matter and total energy

Answer: (D) gravity and potential energy

Question: In any physical or chemical process, what two quantities are always conserved? (A) matter and total energy (B) light and acoustic energy (C) density and thermal energy (D) gravity and potential energy Answer: (A) matter and total energy

TIMSS_2003_8_pg5

The nucleus of MOST atoms consists of

B

Question: The nucleus of MOST atoms consists of (A) neutrons only (B) protons and neutrons (C) protons and electrons (D) neutrons and electrons

Answer: (B) protons and neutrons

Answer: (C) protons and electrons

Question: The nucleus of MOST atoms consists of (A) neutrons only (B) protons and neutrons (C) protons and electrons (D) neutrons and electrons Answer: (B) protons and neutrons

MCAS_2008_8_5702

The complete removal of decomposers from an ecosystem will have the greatest effect on which of the following?

C

Question: The complete removal of decomposers from an ecosystem will have the greatest effect on which of the following? (A) the spread of disease (B) the availability of water (C) the recycling of nutrients (D) the distribution of organisms

Answer: (C) the recycling of nutrients

Answer: (B) the availability of water

Question: The complete removal of decomposers from an ecosystem will have the greatest effect on which of the following? (A) the spread of disease (B) the availability of water (C) the recycling of nutrients (D) the distribution of organisms Answer: (C) the recycling of nutrients

LEAP_2008_8_10424

In an accurate diagram of the solar system, which object would be shown closest to Earth?

A

Question: In an accurate diagram of the solar system, which object would be shown closest to Earth? (A) the Moon (B) the asteroid belt (C) Mars (D) Saturn

Answer: (A) the Moon

Answer: (B) the asteroid belt

Question: In an accurate diagram of the solar system, which object would be shown closest to Earth? (A) the Moon (B) the asteroid belt (C) Mars (D) Saturn Answer: (A) the Moon

MCAS_2000_8_11

Typically, sedimentary rocks are formed

D

Question: Typically, sedimentary rocks are formed (A) only in erupting volcanoes. (B) only under great pressure and high temperatures. (C) below Earth's surface as magma cools and crystallizes. (D) from materials that settle.

Answer: (D) from materials that settle.

Answer: (C) below Earth's surface as magma cools and crystallizes.

Question: Typically, sedimentary rocks are formed (A) only in erupting volcanoes. (B) only under great pressure and high temperatures. (C) below Earth's surface as magma cools and crystallizes. (D) from materials that settle. Answer: (D) from materials that settle.

Mercury_7068618

Which renewable resource is used with photovoltaic cells to produce electricity?

B

Question: Which renewable resource is used with photovoltaic cells to produce electricity? (A) hydrothermal energy (B) solar energy (C) geothermal energy (D) nuclear energy

Answer: (B) solar energy

Answer: (D) nuclear energy

Question: Which renewable resource is used with photovoltaic cells to produce electricity? (A) hydrothermal energy (B) solar energy (C) geothermal energy (D) nuclear energy Answer: (B) solar energy

Mercury_SC_402621

Which will most likely happen to a solid substance that is heated?

A

Question: Which will most likely happen to a solid substance that is heated? (A) It will melt. (B) It will boil. (C) It will harden. (D) It will evaporate.

Answer: (A) It will melt.

Answer: (C) It will harden.

Question: Which will most likely happen to a solid substance that is heated? (A) It will melt. (B) It will boil. (C) It will harden. (D) It will evaporate. Answer: (A) It will melt.

Mercury_7081638

A scientist observes an unusual activity while studying bacterial cells. Using scientific inquiry to investigate the activity will enable the scientist to

C

Question: A scientist observes an unusual activity while studying bacterial cells. Using scientific inquiry to investigate the activity will enable the scientist to (A) control the behavior. (B) prove that the behavior is beneficial. (C) evaluate different explanations of the behavior. (D) conclude how the behavior will change in the future.

Answer: (C) evaluate different explanations of the behavior.

Answer: (B) prove that the behavior is beneficial.

Question: A scientist observes an unusual activity while studying bacterial cells. Using scientific inquiry to investigate the activity will enable the scientist to (A) control the behavior. (B) prove that the behavior is beneficial. (C) evaluate different explanations of the behavior. (D) conclude how the behavior will change in the future. Answer: (C) evaluate different explanations of the behavior.

NYSEDREGENTS_2009_8_31

In order to survive, all organisms must have

3

Question: In order to survive, all organisms must have (1) chlorophyll (2) carbon dioxide (3) energy (4) blood

Answer: (3) energy

Answer: (2) carbon dioxide

Question: In order to survive, all organisms must have (1) chlorophyll (2) carbon dioxide (3) energy (4) blood Answer: (3) energy

NYSEDREGENTS_2005_8_43

Which observation of a plant supports the inference that photosynthesis can take place?

3

Question: Which observation of a plant supports the inference that photosynthesis can take place? (1) a strong, sweet smell (2) a dry, rough texture (3) a green color (4) a smooth stem

Answer: (3) a green color

Answer: (4) a smooth stem

Question: Which observation of a plant supports the inference that photosynthesis can take place? (1) a strong, sweet smell (2) a dry, rough texture (3) a green color (4) a smooth stem Answer: (3) a green color

Mercury_SC_402028

To safely conduct an experiment using chemicals, what should students always do?

B

Question: To safely conduct an experiment using chemicals, what should students always do? (A) Work in large groups. (B) Wear safety goggles. (C) Wear short sleeves. (D) Keep a window open.

Answer: (B) Wear safety goggles.

Answer: (D) Keep a window open.

Question: To safely conduct an experiment using chemicals, what should students always do? (A) Work in large groups. (B) Wear safety goggles. (C) Wear short sleeves. (D) Keep a window open. Answer: (B) Wear safety goggles.

NYSEDREGENTS_2009_8_25

Infections may be caused by

2

Question: Infections may be caused by (1) mutations (2) microorganisms (3) toxic substances (4) climate changes

Answer: (2) microorganisms

Answer: (1) mutations

Question: Infections may be caused by (1) mutations (2) microorganisms (3) toxic substances (4) climate changes Answer: (2) microorganisms

Mercury_7008313

Which are two parts of the carbon cycle?

D

Question: Which are two parts of the carbon cycle? (A) freezing and thawing (B) growth and reproduction (C) evaporation and precipitation (D) photosynthesis and respiration

Answer: (D) photosynthesis and respiration

Answer: (B) growth and reproduction

Question: Which are two parts of the carbon cycle? (A) freezing and thawing (B) growth and reproduction (C) evaporation and precipitation (D) photosynthesis and respiration Answer: (D) photosynthesis and respiration

Mercury_SC_408413

The digestive system breaks food into simple substances that the body can use. What system carries these simple substances from the digestive system to other parts of the body?

A

Question: The digestive system breaks food into simple substances that the body can use. What system carries these simple substances from the digestive system to other parts of the body? (A) circulatory (B) nervous (C) respiratory (D) skeletal

Answer: (A) circulatory

Answer: (D) skeletal

Question: The digestive system breaks food into simple substances that the body can use. What system carries these simple substances from the digestive system to other parts of the body? (A) circulatory (B) nervous (C) respiratory (D) skeletal Answer: (A) circulatory

Mercury_182140

A student conducts an experiment using a common but potentially harmful bacteria culture. After working with the bacteria, which is the most important safety practice to follow?

C

Question: A student conducts an experiment using a common but potentially harmful bacteria culture. After working with the bacteria, which is the most important safety practice to follow? (A) turn off any electrical equipment (B) dispose of waste materials (C) wash hands and tabletops thoroughly (D) return materials to their proper place

Answer: (C) wash hands and tabletops thoroughly

Answer: (D) return materials to their proper place

Question: A student conducts an experiment using a common but potentially harmful bacteria culture. After working with the bacteria, which is the most important safety practice to follow? (A) turn off any electrical equipment (B) dispose of waste materials (C) wash hands and tabletops thoroughly (D) return materials to their proper place Answer: (C) wash hands and tabletops thoroughly

Mercury_SC_415479

Which of these environmental changes goes on for months or years?

A

Question: Which of these environmental changes goes on for months or years? (A) drought (B) flood (C) avalanche (D) landslide

Answer: (A) drought

Answer: (B) flood

Question: Which of these environmental changes goes on for months or years? (A) drought (B) flood (C) avalanche (D) landslide Answer: (A) drought

Mercury_SC_416531

Erin placed her shamrock plant in a dark corner. Soon she saw that the leaves had tilted toward her window. What did the plant need most from the window?

A

Question: Erin placed her shamrock plant in a dark corner. Soon she saw that the leaves had tilted toward her window. What did the plant need most from the window? (A) sunlight during the day (B) air during the day (C) darkness at night (D) warmth at night

Answer: (A) sunlight during the day

Answer: (B) air during the day

Question: Erin placed her shamrock plant in a dark corner. Soon she saw that the leaves had tilted toward her window. What did the plant need most from the window? (A) sunlight during the day (B) air during the day (C) darkness at night (D) warmth at night Answer: (A) sunlight during the day

MEA_2011_8_10

Which gravitational pull has the greatest influence on Earth's tides?

A

Question: Which gravitational pull has the greatest influence on Earth's tides? (A) the gravitational pull between Earth and the Moon (B) the gravitational pull between Earth and the Sun (C) the gravitational pull between Earth and Jupiter (D) the gravitational pull between Earth and Mars

Answer: (A) the gravitational pull between Earth and the Moon

Answer: (B) the gravitational pull between Earth and the Sun

Question: Which gravitational pull has the greatest influence on Earth's tides? (A) the gravitational pull between Earth and the Moon (B) the gravitational pull between Earth and the Sun (C) the gravitational pull between Earth and Jupiter (D) the gravitational pull between Earth and Mars Answer: (A) the gravitational pull between Earth and the Moon

Mercury_7142363

One key physical process in beach formation is wave action. Sand is deposited on beaches as waves break onto the shoreline and the energy from the wave scatters. Which type of energy is most used by wave action to modify the shape of the beaches?

D

Question: One key physical process in beach formation is wave action. Sand is deposited on beaches as waves break onto the shoreline and the energy from the wave scatters. Which type of energy is most used by wave action to modify the shape of the beaches? (A) thermal (B) potential (C) chemical (D) mechanical

Answer: (D) mechanical

Answer: (B) potential

Question: One key physical process in beach formation is wave action. Sand is deposited on beaches as waves break onto the shoreline and the energy from the wave scatters. Which type of energy is most used by wave action to modify the shape of the beaches? (A) thermal (B) potential (C) chemical (D) mechanical Answer: (D) mechanical

VASoL_2008_3_34

A student is asked to bring something that feels rough to class. Which would be BEST for him to bring?

C

Question: A student is asked to bring something that feels rough to class. Which would be BEST for him to bring? (A) Pillow (B) Marble (C) Sandpaper (D) Trading card

Answer: (C) Sandpaper

Answer: (A) Pillow

Question: A student is asked to bring something that feels rough to class. Which would be BEST for him to bring? (A) Pillow (B) Marble (C) Sandpaper (D) Trading card Answer: (C) Sandpaper

Mercury_SC_400835

What tool would be used to examine a fingerprint?

B

Question: What tool would be used to examine a fingerprint? (A) a graduated cylinder (B) a hand lens (C) a pair of goggles (D) a thermometer

Answer: (B) a hand lens

Answer: (C) a pair of goggles

Question: What tool would be used to examine a fingerprint? (A) a graduated cylinder (B) a hand lens (C) a pair of goggles (D) a thermometer Answer: (B) a hand lens

MCAS_2015_5_15

Which of the following is a mineral?

A

Question: Which of the following is a mineral? (A) diamond (B) plastic (C) steel (D) wood

Answer: (A) diamond

Answer: (C) steel

Question: Which of the following is a mineral? (A) diamond (B) plastic (C) steel (D) wood Answer: (A) diamond

Mercury_SC_415409

During a rainstorm, leaves wash down a gully on a hillside. The water slows down at the foot of the hill and fans out, depositing the leaves. What geologic structure is formed in a similar way?

D

Question: During a rainstorm, leaves wash down a gully on a hillside. The water slows down at the foot of the hill and fans out, depositing the leaves. What geologic structure is formed in a similar way? (A) a basalt column (B) a stalactite (C) a fault line (D) a delta

Answer: (D) a delta

Answer: (C) a fault line

Question: During a rainstorm, leaves wash down a gully on a hillside. The water slows down at the foot of the hill and fans out, depositing the leaves. What geologic structure is formed in a similar way? (A) a basalt column (B) a stalactite (C) a fault line (D) a delta Answer: (D) a delta

Mercury_SC_401237

The change in fur color of the Arctic hare from brown in the summer to white in the winter is an example of

D

Question: The change in fur color of the Arctic hare from brown in the summer to white in the winter is an example of (A) mimicry. (B) heredity. (C) diversity. (D) camouflage.

Answer: (D) camouflage.

Answer: (C) diversity.

Question: The change in fur color of the Arctic hare from brown in the summer to white in the winter is an example of (A) mimicry. (B) heredity. (C) diversity. (D) camouflage. Answer: (D) camouflage.

VASoL_2007_3_8

Which sense is used to tell if there is sugar in a glass of tea?

D

Question: Which sense is used to tell if there is sugar in a glass of tea? (A) Touch (B) Hearing (C) Smell (D) Taste

Answer: (D) Taste

Answer: (A) Touch

Question: Which sense is used to tell if there is sugar in a glass of tea? (A) Touch (B) Hearing (C) Smell (D) Taste Answer: (D) Taste

NYSEDREGENTS_2005_8_4

The surface of Earth is covered by a relatively thin layer of water called the

3

Question: The surface of Earth is covered by a relatively thin layer of water called the (1) crust (2) mantle (3) hydrosphere (4) atmosphere

Answer: (3) hydrosphere

Answer: (2) mantle

Question: The surface of Earth is covered by a relatively thin layer of water called the (1) crust (2) mantle (3) hydrosphere (4) atmosphere Answer: (3) hydrosphere

Mercury_7251930

All organisms contain DNA and RNA. What are the subunits of DNA and RNA?

D

Question: All organisms contain DNA and RNA. What are the subunits of DNA and RNA? (A) simple sugars (B) amino acids (C) carbohydrates (D) nucleotides

Answer: (D) nucleotides

Answer: (B) amino acids

Question: All organisms contain DNA and RNA. What are the subunits of DNA and RNA? (A) simple sugars (B) amino acids (C) carbohydrates (D) nucleotides Answer: (D) nucleotides

Mercury_SC_413305

How does ice change the shape of rocks?

B

Question: How does ice change the shape of rocks? (A) It dissolves the rocks by pooling on surfaces. (B) It breaks the rocks by expanding in openings. (C) It smooths the rocks by colliding with them. (D) It moves the rocks by pressing on them.

Answer: (B) It breaks the rocks by expanding in openings.

Answer: (D) It moves the rocks by pressing on them.

Question: How does ice change the shape of rocks? (A) It dissolves the rocks by pooling on surfaces. (B) It breaks the rocks by expanding in openings. (C) It smooths the rocks by colliding with them. (D) It moves the rocks by pressing on them. Answer: (B) It breaks the rocks by expanding in openings.

Mercury_7234203

Which property of Earth's interior keeps the innermost part in a solid state?

B

Question: Which property of Earth's interior keeps the innermost part in a solid state? (A) relatively low temperature (B) extremely high pressure (C) high rate of heat flow (D) low rate of radioactive decay

Answer: (B) extremely high pressure

Answer: (C) high rate of heat flow

Question: Which property of Earth's interior keeps the innermost part in a solid state? (A) relatively low temperature (B) extremely high pressure (C) high rate of heat flow (D) low rate of radioactive decay Answer: (B) extremely high pressure

Mercury_7217753

Diseases that can be transmitted between organisms are

A

Question: Diseases that can be transmitted between organisms are (A) infectious. (B) inherited. (C) environmental. (D) congenital.

Answer: (A) infectious.

Answer: (C) environmental.

Question: Diseases that can be transmitted between organisms are (A) infectious. (B) inherited. (C) environmental. (D) congenital. Answer: (A) infectious.

Mercury_SC_401229

The transfer of thermal energy from one object to another is known as

A

Question: The transfer of thermal energy from one object to another is known as (A) heat. (B) electricity. (C) magnetism. (D) temperature.

Answer: (A) heat.

Answer: (D) temperature.

Question: The transfer of thermal energy from one object to another is known as (A) heat. (B) electricity. (C) magnetism. (D) temperature. Answer: (A) heat.

Mercury_405868

Which part of the body carries out the function of copying DNA?

D

Question: Which part of the body carries out the function of copying DNA? (A) brain (B) heart (C) bones (D) cells

Answer: (D) cells

Answer: (A) brain

Question: Which part of the body carries out the function of copying DNA? (A) brain (B) heart (C) bones (D) cells Answer: (D) cells

Mercury_7025428

The atomic mass of an atom is

C

Question: The atomic mass of an atom is (A) the same as the atomic number. (B) the same as the group number. (C) the sum of protons and neutrons. (D) the difference between protons and electrons.

Answer: (C) the sum of protons and neutrons.

Answer: (D) the difference between protons and electrons.

Question: The atomic mass of an atom is (A) the same as the atomic number. (B) the same as the group number. (C) the sum of protons and neutrons. (D) the difference between protons and electrons. Answer: (C) the sum of protons and neutrons.

NYSEDREGENTS_2009_8_26

Different species of carnivorous animals that share the same habitat in an ecosystem may

2

Question: Different species of carnivorous animals that share the same habitat in an ecosystem may (1) become decomposers (2) compete for food (3) produce their own food (4) mate with each other

Answer: (2) compete for food

Answer: (3) produce their own food

Question: Different species of carnivorous animals that share the same habitat in an ecosystem may (1) become decomposers (2) compete for food (3) produce their own food (4) mate with each other Answer: (2) compete for food

Mercury_SC_401005

Which scientist is best known for studying plants and animals?

C

Question: Which scientist is best known for studying plants and animals? (A) Isaac Newton (B) Albert Einstein (C) Charles Darwin (D) Nicolaus Copernicus

Answer: (C) Charles Darwin

Answer: (A) Isaac Newton

Question: Which scientist is best known for studying plants and animals? (A) Isaac Newton (B) Albert Einstein (C) Charles Darwin (D) Nicolaus Copernicus Answer: (C) Charles Darwin

NYSEDREGENTS_2009_4_25

Green plants get the energy they need to make food from

B

Question: Green plants get the energy they need to make food from (A) air (B) sunlight (C) water (D) soil

Answer: (B) sunlight

Answer: (A) air

Question: Green plants get the energy they need to make food from (A) air (B) sunlight (C) water (D) soil Answer: (B) sunlight

NYSEDREGENTS_2006_4_4

The movement of soil by wind or water is called

C

Question: The movement of soil by wind or water is called (A) condensation (B) evaporation (C) erosion (D) friction

Answer: (C) erosion

Answer: (D) friction

Question: The movement of soil by wind or water is called (A) condensation (B) evaporation (C) erosion (D) friction Answer: (C) erosion

Mercury_SC_415072

Arctic areas are covered with snow and ice for much of the year. Which color rabbits would be safest from foxes there?

C

Question: Arctic areas are covered with snow and ice for much of the year. Which color rabbits would be safest from foxes there? (A) grey (B) black (C) white (D) brown

Answer: (C) white

Answer: (A) grey

Question: Arctic areas are covered with snow and ice for much of the year. Which color rabbits would be safest from foxes there? (A) grey (B) black (C) white (D) brown Answer: (C) white

MCAS_1999_8_20

The ratio of an object's mass to its volume is its

C

Question: The ratio of an object's mass to its volume is its (A) area. (B) perimeter. (C) density. (D) weight.

Answer: (C) density.

Answer: (D) weight.

Question: The ratio of an object's mass to its volume is its (A) area. (B) perimeter. (C) density. (D) weight. Answer: (C) density.

Mercury_401205

As the hawk population increases in an ecosystem, the deer mouse population will most likely decrease as a result of

C

Question: As the hawk population increases in an ecosystem, the deer mouse population will most likely decrease as a result of (A) decrease in food source. (B) increase in disease. (C) increase in predators. (D) decrease in habitat.

Answer: (C) increase in predators.

Answer: (D) decrease in habitat.

Question: As the hawk population increases in an ecosystem, the deer mouse population will most likely decrease as a result of (A) decrease in food source. (B) increase in disease. (C) increase in predators. (D) decrease in habitat. Answer: (C) increase in predators.

Mercury_7207008

Greenhouse gases in the atmosphere trap heat near Earth's surface. Which of these is a greenhouse gas?

C

Question: Greenhouse gases in the atmosphere trap heat near Earth's surface. Which of these is a greenhouse gas? (A) nitrogen (B) argon (C) water vapor (D) oxygen

Answer: (C) water vapor

Answer: (D) oxygen

Question: Greenhouse gases in the atmosphere trap heat near Earth's surface. Which of these is a greenhouse gas? (A) nitrogen (B) argon (C) water vapor (D) oxygen Answer: (C) water vapor

ACTAAP_2014_5_2

What happens during photosynthesis?

D

Question: What happens during photosynthesis? (A) Insects pollinate plants. (B) Plants change soil into food energy. (C) Animals get carbon dioxide from plants. (D) Plants change light energy into food energy.

Answer: (D) Plants change light energy into food energy.

Answer: (B) Plants change soil into food energy.

Question: What happens during photosynthesis? (A) Insects pollinate plants. (B) Plants change soil into food energy. (C) Animals get carbon dioxide from plants. (D) Plants change light energy into food energy. Answer: (D) Plants change light energy into food energy.

TIMSS_1995_8_J4

Which is an example of a chemical reaction?

C

Question: Which is an example of a chemical reaction? (A) The melting of ice (B) The grinding of salt crystals to powder (C) The burning of wood (D) The evaporation of water from a puddle

Answer: (C) The burning of wood

Answer: (A) The melting of ice

Question: Which is an example of a chemical reaction? (A) The melting of ice (B) The grinding of salt crystals to powder (C) The burning of wood (D) The evaporation of water from a puddle Answer: (C) The burning of wood