Question: Which statement best describes a learned characteristic in a dog?

Choices:
A. A dog scratches at a door to go outside.
B. A dog has floppy ears.
C. A dog pants to cool itself on a hot day.
D. A dog has a dark coat.

Answer: A

A dog scratches at a door to go outside.

Question: Which statement best describes a learned characteristic in a dog?
Answer:


Question: Many sports stadiums use grass, but some use fake grass called artificial turf. Artificial turf is made of fibers that look like real grass. In which way is this technology most likely beneficial?

Choices:
A. It uses less water.
B. It produces more heat.
C. It releases less moisture.
D. It absorbs more carbon dioxide.

Answer: A

Question: Many sports stadiums use grass, but some use fake grass called artificial turf. Artificial turf is made of fibers that look like real grass. In which way is this technology most likely beneficial?
Answer:


Question: Why do multicellular organisms need transport systems?

Choices:
A. Most have cells that are not able to exchange gases with the outside environment.
B. Most have cells that are unable to grow and survive in their environment.
C. Most have cells that need food from sources outside their environment.
D. Most have cells that require more energy to survive than single-celled organisms.

Answer: A

Most have cells that are not able to exchange gases with the outside environment.

Question: Why do multicellular organisms need transport systems?
Answer:


Question: A helium-filled balloon is released into the atmosphere. As the balloon rises, which would most likely increase and cause the balloon to burst?

Choices:
A. the mass of the helium
B. the density of the helium
C. the volume of the helium
D. the temperature of the helium

Answer: C

Question: A helium-filled balloon is released into the atmosphere. As the balloon rises, which would most likely increase and cause the balloon to burst?
Answer:


Question: Mrs. Henry's class studied the arrangement of planets in the solar system. Which planets are closest to each other?

Choices:
A. Mars and Earth
B. Saturn and Jupiter
C. Mercury and Venus
D. Uranus and Neptune

Answer: C

Question: Mrs. Henry's class studied the arrangement of planets in the solar system. Which planets are closest to each other?
Answer:


Question: A male puppy inherits traits from

Choices:
A. both parents
B. its mother, only
C. its father, only

Answer: A

Question: A male puppy inherits traits from
Answer:


Question: The parts of plants that make seeds are the

Choices:
A. roots.
B. stems.
C. flowers.
D. leaves.

Answer: C

Question: The parts of plants that make seeds are the
Answer:


Question: Some jet airplanes fly in a layer of the atmosphere where temperature generally increases with altitude. What is this layer of the atmosphere?

Choices:
A. mesosphere
B. stratosphere
C. thermosphere
D. troposphere

Answer: B

Question: Some jet airplanes fly in a layer of the atmosphere where temperature generally increases with altitude. What is this layer of the atmosphere?
Answer:


Question: Which of these are parts of the geologic process that changes metamorphic rock into sedimentary rock?

Choices:
A. volcanic eruption and lava flow
B. igneous intrusion and solidification
C. faulting and displacement
D. erosion and deposition

Answer: D

Question: Which of these are parts of the geologic process that changes metamorphic rock into sedimentary rock?
Answer:


Question: Screech owls nest in holes in trees. They eat mice and crickets. Where would a screech owl most likely live?

Choices:
A. a beach
B. a forest
C. a desert
D. a rainforest

Answer: B

Question: Screech owls nest in holes in trees. They eat mice and crickets. Where would a screech owl most likely live?
Answer:


Question: In 1922 N. L. Bowen developed the concept of magmatic evolution which is also known as Bowen's Reaction Series. Applying the Bowen's Series principles, what mineral forms and crystallizes first in the region of highest temperature and pressure?

Choices:
A. olivine
B. pyroxene
C. amphibole
D. quartz

Answer: A

Question: In 1922 N. L. Bowen developed the concept of magmatic evolution which is also known as Bowen's Reaction Series. Applying the Bowen's Series principles, what mineral forms and crystallizes first in the region of highest temperature and pressure?
Answer:


Question: Which property of an object is identified using the sense of smell?

Choices:
A. color
B. odor
C. temperature
D. weight

Answer: B

Question: Which property of an object is identified using the sense of smell?
Answer:


Question: Joann repeatedly overfed the fish in the pond behind her house. The nitrates from the excess food contributed to an overgrowth of algae. To correct the problem, Joann added more plants to the pond. How will adding more plants help?

Choices:
A. The plants make the pond look beautiful.
B. The plants will camouflage the green algae.
C. The plants will compete with algae for nutrients.
D. The plants will provide all the food for the fish.

Answer: C

The plants will compete with algae for nutrients.

Question: Joann repeatedly overfed the fish in the pond behind her house. The nitrates from the excess food contributed to an overgrowth of algae. To correct the problem, Joann added more plants to the pond. How will adding more plants help?
Answer:


Question: When one form of energy is converted into other forms of energy, the total amount of energy

Choices:
A. varies throughout the conversion.
B. increases because some energy is created.
C. remains constant throughout the conversion.
D. decreases because some energy is destroyed.

Answer: C

remains constant throughout the conversion.

Question: When one form of energy is converted into other forms of energy, the total amount of energy
Answer:


Question: Which calculation is used to determine acceleration?

Choices:
A. divide change in velocity by change in time
B. multiply average velocity by change in time
C. divide average velocity by mass
D. multiply change in velocity by distance traveled

Answer: A

divide change in velocity by change in time

Question: Which calculation is used to determine acceleration?
Answer:


Question: Which organism is a decomposer?

Choices:
A. frog
B. worm
C. oak tree
D. grasshopper

Answer: B

Question: Which organism is a decomposer?
Answer:


Question: In order for electricity from a battery to power a light bulb, the wire has to provide the electricity a path to do what?

Choices:
A. flow through the entire closed circuit
B. charge the air molecules near the circuit
C. jump from one battery terminal to the other
D. change the chemical properties of the wire

Answer: A

Question: In order for electricity from a battery to power a light bulb, the wire has to provide the electricity a path to do what?
Answer:


Question: Which of the following contains most of the water on Earth?

Choices:
A. the oceans
B. watersheds
C. the atmosphere
D. ice and aquifers

Answer: A

Question: Which of the following contains most of the water on Earth?
Answer:


Question: Marta has a radio in her room. It requires electricity in order to play. Which of the following is necessary in order for electricity to move from the source to the radio?

Choices:
A. a circuit
B. a magnet
C. a light bulb
D. an insulator

Answer: A

Question: Marta has a radio in her room. It requires electricity in order to play. Which of the following is necessary in order for electricity to move from the source to the radio?
Answer:


Question: Which of these revolves around a planet?

Choices:
A. an asteroid.
B. a star.
C. a comet.
D. a moon.

Answer: D

Question: Which of these revolves around a planet?
Answer:


Question: How are bacterial cells and human cells alike?

Choices:
A. They allow oxygen through the cell wall.
B. They allow carbon dioxide through the cell wall.
C. They allow nutrients through the cell membrane.
D. They allow nutrients through the nuclear membrane.

Answer: C

They allow nutrients through the cell membrane.

Question: How are bacterial cells and human cells alike?
Answer:


Question: In which layer of the atmosphere does most of Earth's weather occur?

Choices:
A. the exosphere, which is the outermost layer
B. the troposphere, which is the lowest layer
C. the thermosphere, which has the highest temperature
D. the stratosphere, which contains a sub-layer of ozone

Answer: B

the troposphere, which is the lowest layer

Question: In which layer of the atmosphere does most of Earth's weather occur?
Answer:


Question: Researchers are investigating whether dinosaurs were endothermic like birds. Which evidence from the fossil record could be effectively compared with modern day evidence to support this hypothesis?

Choices:
A. similarities in bone structure
B. seasonal shifts in food supply
C. consumption of the same plant species
D. tree rings indicating the return of a similar climate

Answer: A

Question: Researchers are investigating whether dinosaurs were endothermic like birds. Which evidence from the fossil record could be effectively compared with modern day evidence to support this hypothesis?
Answer:


Question: Betsy tries to attract a variety of birds to her backyard. She puts up a bird feeder that contains sunflower seeds and corn. Which term best describes the contents of the bird feeder?

Choices:
A. a mixture
B. a solution
C. an element
D. a compound

Answer: A

Question: Betsy tries to attract a variety of birds to her backyard. She puts up a bird feeder that contains sunflower seeds and corn. Which term best describes the contents of the bird feeder?
Answer:


Question: Students compare two different rocks. The rocks are both bright and spotted. Which property are the students most likely observing?

Choices:
A. layers
B. textures
C. colors
D. ages

Answer: C

Question: Students compare two different rocks. The rocks are both bright and spotted. Which property are the students most likely observing?
Answer:


Question: Respiration is a process during which energy is released from glucose. This energy is used for processes such as growth of the body. Which type of energy does respiration release?

Choices:
A. chemical
B. kinetic
C. potential
D. thermal

Answer: A

Question: Respiration is a process during which energy is released from glucose. This energy is used for processes such as growth of the body. Which type of energy does respiration release?
Answer:


Question: All animals need air to survive. An insect gets air through tiny holes on the sides of its body. A whale breathes through a blow hole. What body part do fish use to breathe?

Choices:
A. gills
B. skin
C. nose
D. mouth

Answer: A

Question: All animals need air to survive. An insect gets air through tiny holes on the sides of its body. A whale breathes through a blow hole. What body part do fish use to breathe?
Answer:


Question: The transfer of heat in the atmosphere by winds that circulate between the equator and the poles is an example of

Choices:
A. radiation.
B. insulation.
C. convection.
D. conduction.

Answer: C

Question: The transfer of heat in the atmosphere by winds that circulate between the equator and the poles is an example of
Answer:


Question: Fossil fuels are common sources of energy. What type of pollution is most often associated with burning fossil fuels?

Choices:
A. air
B. land
C. noise
D. water

Answer: A

Question: Fossil fuels are common sources of energy. What type of pollution is most often associated with burning fossil fuels?
Answer:


Question: Why is it important to protect soil?

Choices:
A. It covers the bedrock layer in the earth.
B. It has nutrients used by plants to grow.
C. It holds many harmful pollutants.
D. It dries quickly in sunlight.

Answer: B

It has nutrients used by plants to grow.

Question: Why is it important to protect soil?
Answer:


Question: Which of these provides the best evidence that an environmental change has occurred?

Choices:
A. a freshwater lake in the mountains
B. marine fossils in a freshwater lake
C. saltwater clams in the ocean
D. a sandy beach next to the ocean

Answer: B

Question: Which of these provides the best evidence that an environmental change has occurred?
Answer:


Question: Which tool would be most useful in studying the living organisms the students collected from the pond?

Choices:
A. balance
B. pH meter
C. microscope
D. thermometer

Answer: C

Question: Which tool would be most useful in studying the living organisms the students collected from the pond?
Answer:


Question: Which of the following are likely to do the most damage to ecosystems along the Rio Grande River?

Choices:
A. floods
B. tsunamis
C. blizzards
D. earthquakes

Answer: A

Question: Which of the following are likely to do the most damage to ecosystems along the Rio Grande River?
Answer:


Question: Which planet is fourth from the Sun in our solar system?

Choices:
A. Mars
B. Earth
C. Venus
D. Jupiter

Answer: A

Question: Which planet is fourth from the Sun in our solar system?
Answer:


Question: Which set of elements have chemical properties similar to those of phosphorus?

Choices:
A. nitrogen, arsenic, and antimony
B. carbon, selenium, and iodine
C. silicon, sulfur, and germanium
D. silicon, sulfur, and chlorine

Answer: A

Question: Which set of elements have chemical properties similar to those of phosphorus?
Answer:


Question: Juan noticed that sunny skies suddenly became stormy. Which most likely happened when the weather changed in this way?

Choices:
A. Winds weakened.
B. Humidity decreased.
C. Air pressure dropped.
D. Temperatures increased.

Answer: C

Question: Juan noticed that sunny skies suddenly became stormy. Which most likely happened when the weather changed in this way?
Answer:


Question: The increasing use of internal combustion engines could eventually deplete which resource?

Choices:
A. wind energy
B. petroleum
C. uranium
D. solar energy

Answer: B

Question: The increasing use of internal combustion engines could eventually deplete which resource?
Answer:


Question: Elements on the right side of the periodic table differ from the elements on the left side in that the elements on the right side

Choices:
A. are solid at room temperature.
B. are good electrical conductors.
C. generally have very high densities.
D. tend to form ions by gaining electrons.

Answer: D

Question: Elements on the right side of the periodic table differ from the elements on the left side in that the elements on the right side
Answer:


Question: On a day in early spring, the number of hours of daylight and of night are about the same. From sunrise to sunset on a spring day, Earth has

Choices:
A. completed half of one rotation.
B. been in the shadow of the Moon.
C. been circled by the Moon one time.
D. moved to the opposite side of the Sun.

Answer: A

Question: On a day in early spring, the number of hours of daylight and of night are about the same. From sunrise to sunset on a spring day, Earth has
Answer:


Question: The width of a pencil lead is most accurately measured in

Choices:
A. meters.
B. inches.
C. millimeters.
D. feet.

Answer: C

Question: The width of a pencil lead is most accurately measured in
Answer:


Question: Which layer of the atmosphere contains about 75% of the gasses and almost all of the water vapor?

Choices:
A. troposphere
B. stratosphere
C. mesosphere
D. thermosphere

Answer: A

Question: Which layer of the atmosphere contains about 75% of the gasses and almost all of the water vapor?
Answer:


Question: Which of these is the center of our solar system?

Choices:
A. Mars
B. The moon
C. Jupiter
D. The sun

Answer: D

Question: Which of these is the center of our solar system?
Answer:


Question: The empty spaces in a material are called pores. Porosity is the amount of empty space within a material. Permeability describes how well the pores in a material are connected. Which of these materials would make the most effective aquifer?

Choices:
A. a material that has high porosity and high permeability
B. a material that has high porosity and low permeability
C. a material that has low porosity and high permeability
D. a material that has low porosity and low permeability

Answer: A

a material that has high porosity and high permeability

Question: The empty spaces in a material are called pores. Porosity is the amount of empty space within a material. Permeability describes how well the pores in a material are connected. Which of these materials would make the most effective aquifer?
Answer:


Question: Which part of a dandelion plant takes in minerals and water?

Choices:
A. flower
B. leaf
C. root
D. stem

Answer: C

Question: Which part of a dandelion plant takes in minerals and water?
Answer:


Question: Which event will occur in an area after a major flood?

Choices:
A. a decrease in the erosion of riverbanks
B. a decrease in the number of native plants
C. an increase in the number of animal habitats
D. an increase in the diversity of insect species

Answer: B

a decrease in the number of native plants

Question: Which event will occur in an area after a major flood?
Answer:


Question: The boiling point of water in degrees Celsius is

Choices:
A. 0°C.
B. 32°C.
C. 100°C.
D. 212°C.

Answer: C

Question: The boiling point of water in degrees Celsius is
Answer:


Question: Jessica is making fruit punch for her friends. She pours the powder into a container with sugar and water. Which of these best describes what happens to the sugar?

Choices:
A. It expands.
B. It dissolves.
C. It condenses.
D. It evaporates.

Answer: B

Question: Jessica is making fruit punch for her friends. She pours the powder into a container with sugar and water. Which of these best describes what happens to the sugar?
Answer:


Question: Which of these best describes wind energy?

Choices:
A. limited
B. renewable
C. damaging
D. inexpensive

Answer: B

Question: Which of these best describes wind energy?
Answer:


Question: Which is the best example of a parasitic relationship?

Choices:
A. a woodpecker nesting in a cavity of a dead tree
B. a tapeworm absorbing food in the digestive tract of a wolf
C. a polar bear hunting a seal for food
D. a hummingbird transferring pollen between flowers

Answer: B

a tapeworm absorbing food in the digestive tract of a wolf

Question: Which is the best example of a parasitic relationship?
Answer:


Question: Plant cells use special parts to capture sunlight. The parts use the sunlight to make food. Where will you find the most of these parts in a plant?

Choices:
A. roots
B. stems
C. leaves
D. flowers

Answer: C

Question: Plant cells use special parts to capture sunlight. The parts use the sunlight to make food. Where will you find the most of these parts in a plant?
Answer:


Question: Which of these best demonstrates the characteristics of science?

Choices:
A. One student lifts a rock and skips it across a stream.
B. One student thinks about rocks and writes down his opinion.
C. Two students study a rock and then compare their observations.
D. Two students remove rocks from a garden and then plant flowers.

Answer: C

Two students study a rock and then compare their observations.

Question: Which of these best demonstrates the characteristics of science?
Answer:


Question: A student picked up a small rock using a magnet. The rock probably contained

Choices:
A. quartz.
B. diamond.
C. aluminum.
D. iron.

Answer: D

Question: A student picked up a small rock using a magnet. The rock probably contained
Answer:


Question: Human Immunodeficiency Virus (HIV) infects the cells that coordinate the human immune response. When these cells are killed or compromised, the body cannot effectively protect itself from infection. Which cells does HIV infect?

Choices:
A. natural killer T cells
B. regulatory T cells
C. cytotoxic T cells
D. helper T cells

Answer: D

Question: Human Immunodeficiency Virus (HIV) infects the cells that coordinate the human immune response. When these cells are killed or compromised, the body cannot effectively protect itself from infection. Which cells does HIV infect?
Answer:


Question: Which plant is grown for food?

Choices:
A. Rice
B. Tobacco
C. Orchid
D. Cotton

Answer: A

Question: Which plant is grown for food?
Answer:


Question: What does the mechanical energy of a system include?

Choices:
A. the sum of the potential and kinetic energy
B. the difference of the potential and kinetic energy
C. only the kinetic energy
D. only the potential energy

Answer: A

the sum of the potential and kinetic energy

Question: What does the mechanical energy of a system include?
Answer:


Question: Students measured the elevation changes in a large park near their school. Which of the following would be the best way to report their findings?

Choices:
A. line graph
B. topographic map
C. color-coded chart
D. spreadsheet data table

Answer: B

Question: Students measured the elevation changes in a large park near their school. Which of the following would be the best way to report their findings?
Answer:


Question: Which event most likely takes place as the result of crustal movement along transform boundaries?

Choices:
A. earthquakes
B. volcanic activity
C. mountain building
D. trenches

Answer: A

Question: Which event most likely takes place as the result of crustal movement along transform boundaries?
Answer:


Question: Spring tides occur during which lunar phases?

Choices:
A. first quarter and last quarter
B. full moon and new moon
C. when the moon is waxing
D. when the moon is waning

Answer: B

Question: Spring tides occur during which lunar phases?
Answer:


Question: Sound waves are not able to travel through

Choices:
1. a cloud
2. a vacuum
3. metal
4. water

Answer: 2

Question: Sound waves are not able to travel through
Answer:


Question: A scientist compares ancient animal tracks to modern animal tracks. Which conclusion is the scientist most likely to reach?

Choices:
A. Some ancient animals and some modern animals walk on four legs.
B. Most ancient animals and most modern animals hunt animals for food.
C. The same animals that lived long ago also live today.
D. All animals can walk.

Answer: A

Some ancient animals and some modern animals walk on four legs.

Question: A scientist compares ancient animal tracks to modern animal tracks. Which conclusion is the scientist most likely to reach?
Answer:


Question: Astronomers have been studying objects that are very bright and appear to be very far away. They have since concluded that these objects are distant galaxies with giant black holes at their center known as

Choices:
A. pulsars.
B. quasars.
C. supernovas.
D. binary stars.

Answer: B

Question: Astronomers have been studying objects that are very bright and appear to be very far away. They have since concluded that these objects are distant galaxies with giant black holes at their center known as
Answer:


Question: Which scientist developed the mathematical models used to describe the changes in the motion of objects as well as the forces that cause the change in motion?

Choices:
A. Dalton
B. Newton
C. Aristotle
D. Ptolemy

Answer: B

Question: Which scientist developed the mathematical models used to describe the changes in the motion of objects as well as the forces that cause the change in motion?
Answer:


Question: A scientist trying to identify an unknown liquid may heat the liquid. Which would be the best reason for the scientist to heat the liquid?

Choices:
A. to observe a color change
B. to get rid of most impurities
C. to identify the boiling point
D. to collect gases for additional study

Answer: C

Question: A scientist trying to identify an unknown liquid may heat the liquid. Which would be the best reason for the scientist to heat the liquid?
Answer:


Question: A student uses clay to construct a model of Earth. Which layer of the model should be the thinnest layer?

Choices:
A. the layer representing the mantle
B. the layer representing the outer core
C. the layer representing the inner core
D. the layer representing the crust

Answer: D

Question: A student uses clay to construct a model of Earth. Which layer of the model should be the thinnest layer?
Answer:


Question: In order to carry out the functions of life, organisms must

Choices:
A. have more than one type of cell.
B. be exposed to sunlight.
C. have at least one cell.
D. be able to move.

Answer: C

Question: In order to carry out the functions of life, organisms must
Answer:


Question: The news often talks about how global warming could change environmental conditions on Earth. Which best explains why global warming is such a concern?

Choices:
A. Glaciers will advance.
B. The sea level will rise.
C. Earthquake activity will increase.
D. The overall temperature will decrease.

Answer: B

Question: The news often talks about how global warming could change environmental conditions on Earth. Which best explains why global warming is such a concern?
Answer:


Question: What must happen in order for scientific data to be verified through repetition?

Choices:
A. Accurate records must be kept.
B. Modern technology must be used.
C. Investigations must be conducted by trained scientists.
D. Observations must be made by more than one scientist.

Answer: A

Question: What must happen in order for scientific data to be verified through repetition?
Answer:


Question: Which of the following statements best describes a complex machine?

Choices:
A. It is designed to move with a motor.
B. It is constructed from machine-made parts.
C. It is made of more than one simple machine.
D. It is built from more than one type of material.

Answer: C

It is made of more than one simple machine.

Question: Which of the following statements best describes a complex machine?
Answer:


Question: On Mount Everest the temperature decreases as the altitude increases. The summit of this mountain is in which atmospheric layer?

Choices:
A. mesosphere
B. stratosphere
C. thermosphere
D. troposphere

Answer: D

Question: On Mount Everest the temperature decreases as the altitude increases. The summit of this mountain is in which atmospheric layer?
Answer:


Question: Which color of light is produced when all of the colors of visible light in the electromagnetic spectrum are combined?

Choices:
A. gray
B. white
C. black
D. brown

Answer: B

Question: Which color of light is produced when all of the colors of visible light in the electromagnetic spectrum are combined?
Answer:


Question: Which of the following has the ability to change the state of matter?

Choices:
A. heat
B. wind
C. light
D. sound

Answer: A

Question: Which of the following has the ability to change the state of matter?
Answer:


Question: Which layer of Earth is divided into plates?

Choices:
A. Mantle
B. Crust
C. Inner core
D. Outer core

Answer: B

Question: Which layer of Earth is divided into plates?
Answer:


Question: A meteorologist announces that the barometer reading is dropping. What does a barometer measure?

Choices:
A. wind speed
B. air pressure
C. air temperature
D. ground temperature

Answer: B

Question: A meteorologist announces that the barometer reading is dropping. What does a barometer measure?
Answer:


Question: The texture of soil depends primarily on the

Choices:
A. mass of the soil.
B. water in the soil.
C. composition of the soil.
D. vegetation growing in the soil.

Answer: C

Question: The texture of soil depends primarily on the
Answer:


Question: What instrument should be used to monitor atmospheric pressure changes as a weather system approaches?

Choices:
A. psychrometer
B. thermometer
C. anemometer
D. barometer

Answer: D

Question: What instrument should be used to monitor atmospheric pressure changes as a weather system approaches?
Answer:


Question: Which of these are scientific classifications for galaxies in the universe?

Choices:
A. dust, gas, ice
B. small, medium, large
C. spiral, elliptical, irregular
D. red giant, white dwarf, supernova

Answer: C

Question: Which of these are scientific classifications for galaxies in the universe?
Answer:


Question: Which invention has done the most to help predict weather and warn people of approaching storms?

Choices:
A. satellites
B. airplanes
C. barometers
D. maps

Answer: A

Question: Which invention has done the most to help predict weather and warn people of approaching storms?
Answer:


Question: How are dormancy and hibernation similar in animals?

Choices:
A. metabolic rate and body temperature both increase
B. metabolic rate and body temperature both decrease
C. metabolic rate increases and body temperature decreases
D. metabolic rate decreases and body temperature increases

Answer: B

metabolic rate and body temperature both decrease

Question: How are dormancy and hibernation similar in animals?
Answer:


Question: Which is most likely to cause an organism to become endangered or extinct?

Choices:
A. habitat loss
B. behavioral changes
C. increased reproduction rate
D. altered migration patterns

Answer: A

Question: Which is most likely to cause an organism to become endangered or extinct?
Answer:


Question: Sodium chloride is formed when sodium and chlorine chemically combine. Which term best describes sodium chloride?

Choices:
A. mixture
B. element
C. solution
D. compound

Answer: D

Question: Sodium chloride is formed when sodium and chlorine chemically combine. Which term best describes sodium chloride?
Answer:


Question: How would the Sun appear to an astronaut on Pluto compared with how it looks from Earth?

Choices:
A. The Sun would appear larger and brighter.
B. The Sun would appear smaller and brighter.
C. The Sun would appear larger and dimmer.
D. The Sun would appear smaller and dimmer.

Answer: D

The Sun would appear smaller and dimmer.

Question: How would the Sun appear to an astronaut on Pluto compared with how it looks from Earth?
Answer:


Question: How does the Sun power the water cycle?

Choices:
A. Energy from the Sun evaporates water.
B. Energy from the Sun condenses water.
C. Energy from the Sun precipitates water.
D. Energy from the Sun collects water.

Answer: A

Question: How does the Sun power the water cycle?
Answer:


Question: Fossil fuels are considered nonrenewable because they

Choices:
1. produce pollution
2. are no longer used by humans
3. often contain microscopic animals
4. take millions of years to form

Answer: 4

Question: Fossil fuels are considered nonrenewable because they
Answer:


Question: Which equipment would best be used for an activity on a biochemistry unit?

Choices:
A. meter stick, microscope, and test tubes
B. test tube, hot plate, and safety goggles
C. balance, telescope, and graduated cylinder
D. Petri dish, dissecting equipment, and spring scale

Answer: B

test tube, hot plate, and safety goggles

Question: Which equipment would best be used for an activity on a biochemistry unit?
Answer:


Question: A water hose was left running on a pile of dirt. What feature of stream erosion was most likely being demonstrated?

Choices:
A. the rate of water flow in a stream
B. the time it takes for deposition to occur along a stream
C. how layers of rocks and soil are formed along a stream
D. how water shapes a stream over time

Answer: D

Question: A water hose was left running on a pile of dirt. What feature of stream erosion was most likely being demonstrated?
Answer:


Question: Which cellular organelle modifies fatty acids?

Choices:
A. chloroplast
B. mitochondrion
C. Golgi complex
D. endoplasmic reticulum

Answer: D

Question: Which cellular organelle modifies fatty acids?
Answer:


Question: Which of these shows how frozen water changes as the temperature of the air increases?

Choices:
A. Gas -> liquid -> solid
B. Solid -> gas -> liquid
C. Liquid -> gas -> solid
D. Solid -> liquid -> gas

Answer: D

Question: Which of these shows how frozen water changes as the temperature of the air increases?
Answer:


Question: Which two body systems interact to produce antibodies that require essential amino acids?

Choices:
A. integumentary and circulatory systems
B. digestive and reproductive systems
C. endocrine and respiratory systems
D. digestive and immune systems

Answer: D

Question: Which two body systems interact to produce antibodies that require essential amino acids?
Answer:


Question: Patricia and her classmates are visiting different rocky areas in the city. They want to know what kind of rocks can be found in each area. If the investigation is done correctly, what will Patricia and her classmates do each time they visit an area?

Choices:
A. draw the rock shapes
B. count the rock numbers
C. record the rock types and locations
D. measure the rock masses and lengths

Answer: C

Question: Patricia and her classmates are visiting different rocky areas in the city. They want to know what kind of rocks can be found in each area. If the investigation is done correctly, what will Patricia and her classmates do each time they visit an area?
Answer:


Question: A topographic map is primarily used to determine the

Choices:
A. number of continents in the world.
B. location of major cities in the country.
C. elevation of an area.
D. rainfall of desert regions.

Answer: C

Question: A topographic map is primarily used to determine the
Answer:


Question: A student is investigating the properties of a mineral. The student tests the mineral by putting it under an ultraviolet light. Which property of the mineral can be identified using this test?

Choices:
A. color
B. streak
C. luster
D. fluorescence

Answer: D

Question: A student is investigating the properties of a mineral. The student tests the mineral by putting it under an ultraviolet light. Which property of the mineral can be identified using this test?
Answer:


Question: Proteins are compounds formed in the cells of plants and animals. Which element is included in every protein molecule?

Choices:
A. calcium
B. carbon
C. fluorine
D. sodium

Answer: B

Question: Proteins are compounds formed in the cells of plants and animals. Which element is included in every protein molecule?
Answer:


Question: Jennifer is jumping rope. Which type of characteristic is she most likely demonstrating?

Choices:
A. learned
B. recessive
C. inherited
D. instinctive

Answer: A

Question: Jennifer is jumping rope. Which type of characteristic is she most likely demonstrating?
Answer:


Question: Which of the following parts of a car belongs to its control system?

Choices:
A. fuel tank
B. hydraulic jack
C. steering wheel
D. windshield wipers

Answer: C

Question: Which of the following parts of a car belongs to its control system?
Answer:


Question: A student hears the sound of a bell. Which of the following carries the sound of the bell to the student?

Choices:
A. electrical currents
B. magnetic signals
C. radio waves
D. vibrating air

Answer: D

Question: A student hears the sound of a bell. Which of the following carries the sound of the bell to the student?
Answer:


Question: Which object helps people understand what makes up white light?

Choices:
A. Barometer
B. Prism
C. Microscope
D. Thermometer

Answer: B

Question: Which object helps people understand what makes up white light?
Answer:


Question: A student drops a white tablet into a glass of water, producing carbon dioxide gas. This is a demonstration of

Choices:
A. a change of state.
B. a chemical reaction.
C. the creation of matter.
D. the movement of electricity.

Answer: B

Question: A student drops a white tablet into a glass of water, producing carbon dioxide gas. This is a demonstration of
Answer:


Question: Which is not a type of electromagnetic wave?

Choices:
A. sound wave
B. x-ray
C. microwave
D. radio wave

Answer: A

Question: Which is not a type of electromagnetic wave?
Answer:


Question: Which characteristic is shared by all members of Arthropoda and Chordata phyla?

Choices:
A. mandibles
B. simple eyes
C. jointed limbs
D. one pair of wings

Answer: C

Question: Which characteristic is shared by all members of Arthropoda and Chordata phyla?
Answer:


Question: Which pair would be most necessary for life to develop on another planet?

Choices:
A. sulfur and nitrogen
B. helium and hydrogen
C. liquid water and carbon
D. chlorophyll and oxygen

Answer: C

Question: Which pair would be most necessary for life to develop on another planet?
Answer:


Question: A red flowered plant (RR) is crossed with a white flowered plant (WW) and produces plants with pink flowers (RW). If two pink flowered plants are crossed, what color offspring could be produced?

Choices:
A. red, white, and pink
B. red and white
C. pink and red
D. pink and white

Answer: A

Question: A red flowered plant (RR) is crossed with a white flowered plant (WW) and produces plants with pink flowers (RW). If two pink flowered plants are crossed, what color offspring could be produced?
Answer:


Question: Some changes are fast. Some changes are slow. Which of these changes is most likely the slowest?

Choices:
A. fire
B. flood
C. landslide
D. drought

Answer: D

Question: Some changes are fast. Some changes are slow. Which of these changes is most likely the slowest?
Answer:


Question: Andre learned that plants survive through a process called photosynthesis. Which substance do plants produce during photosynthesis?

Choices:
A. minerals
B. nitrogen
C. soil
D. sugar

Answer: D

Question: Andre learned that plants survive through a process called photosynthesis. Which substance do plants produce during photosynthesis?
Answer:


Question: How does no-till farming help the environment?

Choices:
A. It decreases soil erosion.
B. It increases soil removal.
C. It increases fertilizer use.
D. It decreases crop yield.

Answer: A

Question: How does no-till farming help the environment?
Answer:


Question: A student makes a fruit drink by stirring a powdered mix into cold water. Why is the fruit drink a solution?

Choices:
A. The powder dissolves in the water.
B. The water changes color.
C. The student stirs the water.
D. The water is the proper temperature.

Answer: A

Question: A student makes a fruit drink by stirring a powdered mix into cold water. Why is the fruit drink a solution?
Answer:


Question: A summer day begins with a clear, sunny sky. Then, dark clouds form in the afternoon. What type of weather will MOST likely happen next?

Choices:
A. Sleet and snow
B. Rain and thunder
C. Wind and snow
D. Fog and wind

Answer: B

Question: A summer day begins with a clear, sunny sky. Then, dark clouds form in the afternoon. What type of weather will MOST likely happen next?
Answer:


Question: Which rankings of trees would most likely useful in a scientific study of fruit production in apple trees?

Choices:
A. date of flowering and the fruit yield
B. fruit yield and taste of the fruit
C. taste of the fruit and smell of the flower
D. date of flowering and smell of the flower

Answer: A

Question: Which rankings of trees would most likely useful in a scientific study of fruit production in apple trees?
Answer:


Question: Which of these is the basic building block of complex organisms?

Choices:
A. a cell
B. a tissue
C. an organ
D. an organ system

Answer: A

Question: Which of these is the basic building block of complex organisms?
Answer:


Question: Constellations are patterns of objects seen in the night sky from Earth. How are the objects in constellations like the Sun?

Choices:
A. The objects are stars.
B. The objects are planets.
C. The objects are located in this solar system.
D. The objects heat the atmosphere of Earth.

Answer: A

Question: Constellations are patterns of objects seen in the night sky from Earth. How are the objects in constellations like the Sun?
Answer:


Question: The surface of Earth is covered mostly by

Choices:
1. solid rock
2. molten rock
3. ice
4. water

Answer: 4

Question: The surface of Earth is covered mostly by
Answer:


Question: A student wants to organize a group of animals into two categories based on observable external features. Which display will most appropriately show the two categories of animals?

Choices:
A. a timeline
B. a pie chart
C. a data table
D. a line graph

Answer: C

Question: A student wants to organize a group of animals into two categories based on observable external features. Which display will most appropriately show the two categories of animals?
Answer:


Question: Which of the following provides the best evidence that Earth has evolved over geologic time?

Choices:
A. coral reefs that slowly changed size
B. desert sand dunes that were shaped by winds
C. deposits of sediment found at the mouth of a river
D. rock containing fossilized seashells found on a mountaintop

Answer: D

rock containing fossilized seashells found on a mountaintop

Question: Which of the following provides the best evidence that Earth has evolved over geologic time?
Answer:


Question: Which is the best example of a chemical reaction?

Choices:
A. blocked sunlight casts a shadow
B. sunlight evaporates water from a lake
C. oxygen absorbs sunlight forming ozone molecules
D. a prism refracts sunlight into light of different wavelengths

Answer: C

oxygen absorbs sunlight forming ozone molecules

Question: Which is the best example of a chemical reaction?
Answer:


Question: Which of these does the MOST harm to the air?

Choices:
A. Chopping down trees with an ax in the backyard
B. Collecting fall leaves
C. Cutting grass with a gas-powered lawnmower
D. Picking colorful wildflowers along the highway

Answer: C

Cutting grass with a gas-powered lawnmower

Question: Which of these does the MOST harm to the air?
Answer:


Question: Which set of elements has similar bonding properties?

Choices:
A. Cl, Br, and F
B. K, Ca, and Sc
C. Kr, Cl, and O
D. Be, C, and O

Answer: A

Question: Which set of elements has similar bonding properties?
Answer:


Question: When a beam of light passes through a clear, convex lens, the light will mostly

Choices:
A. diffract and spread out.
B. diffract and come to a focal point.
C. refract and come to a focal point.
D. refract and spread out.

Answer: C

Question: When a beam of light passes through a clear, convex lens, the light will mostly
Answer:


Question: When a neutral atom gains or loses electrons, it becomes

Choices:
A. more stable.
B. an isotope.
C. an ion.
D. less charged.

Answer: C

Question: When a neutral atom gains or loses electrons, it becomes
Answer:


Question: A population of ground squirrels has established a community in the grasslands of the Great Plains. Temperatures often reach -15°C for most of the winter. What is the most likely behavior the ground squirrels use to survive these winter temperatures?

Choices:
A. burrowing below the frost point of the soil surface
B. burrowing in tree trunks above the soil surface
C. consuming roots found under the soil surface
D. consuming organisms found in the soil surface

Answer: A

burrowing below the frost point of the soil surface

Question: A population of ground squirrels has established a community in the grasslands of the Great Plains. Temperatures often reach -15°C for most of the winter. What is the most likely behavior the ground squirrels use to survive these winter temperatures?
Answer:


Question: What do the elements sulfur (S), nitrogen (N), phosphorus (P), and bromine (Br) have in common?

Choices:
A. They are noble (inert) gases.
B. They are nonmetals.
C. They have the same thermal conductivity.
D. They have the same number of protons.

Answer: B

Question: What do the elements sulfur (S), nitrogen (N), phosphorus (P), and bromine (Br) have in common?
Answer:


Question: What keeps the planets in orbit around the Sun?

Choices:
A. tides
B. gravity
C. electricity
D. magnetism

Answer: B

Question: What keeps the planets in orbit around the Sun?
Answer:


Question: Food contains stored chemical energy. Which units of measurement can be used to compare the amounts of energy in different foods?

Choices:
A. calories
B. decibels
C. newtons
D. watts

Answer: A

Question: Food contains stored chemical energy. Which units of measurement can be used to compare the amounts of energy in different foods?
Answer:


Question: Which part of a sunflower plant absorbs water and nutrients?

Choices:
A. Roots
B. Stems
C. Leaves
D. Flowers

Answer: A

Question: Which part of a sunflower plant absorbs water and nutrients?
Answer: