Force and Motion/Earth Systems
Which best explains the relationship between the speed of sound and the medium through which it passes?
A Sound travels faster in solids because of the increased distance between solid particles.
B Sound travels faster in air because of the decreased distance between air particles.
C Sound travels slower in air because of the increased distance between air particles.
D. Sound travels slower in solids because of the decreased distance between solid particles.
C. Sound travels slower in air because of the increased distance between air particles.
Why does Earth have different seasons?
A because of the distance between Earth and the sun
B because of the speed of Earth as it rotates on its axis
C because of the amount of light blocked by the moon on its axis
D because of the tilt of Earth on its axis as it moves around the sun
D because of the tilt of Earth on its axis as it moves around the sun
Which is composed of matter?
A. electricity
B. an atom
C. light
D. heat
B. An atom
Which environment would produce soil at a faster rate?
A an environment located in warm, wet regions
B an environment that consists of many slopes
C an environment without any vegetation
D an environment with high rates of erosion
A an environment located in warm, wet regions
How are earthquakes, sound and light waves alike?
A. They transmit energy.
B. They carry matter.
C. They travel in space.
D. They can be seen.
A. They transmit energy.
Jenny adds thicker strings to her guitar. What does that do?
A. It prevents the guitar from using air particles to transfer the sound.
B. It changes the number of strings on the guitar.
C. It changes the vibrations made by the guitar.
D. It prevents the guitar from making sounds.
C. It changes the vibrations made by the guitar.
Which best explains why the moon has phases?
A. The moon's position changes in relation to the sun and Earth.
B. The sun's position changes in relation to the moon and Earth.
C. The Earth casts a shadow on the moon as it rotates.
D. The moon rotates on its axis.
A. The moon's position changes in relation to the sun and Earth.
The diagram below shows two pure iron magnets.
N S N S
Magnet 1 Magnet 2
Which is true about these two magnets?
A They contain different types of atoms but the same elements.
B They contain the same type of atoms, but different elements.
C They contain the same type of atoms and elements.
D They contain different types of atoms and elements.
C. They contain the same type of atoms and elements.
A class is conducting an experiment on how different types of soil can affect the growth of a plant. Which are the main factors the class should consider when designing the experiment?
A the soil texture and the amount of water it can hold
B the types and amounts of sugars found in the soil
C the color of the container for the soil and the plant
D the shape and color of the seeds planted in the soil
A the soil texture and the amount of water it can hold
What is the relationship between eyesight and light?
A. Light shines on all objects, allowing people to see them.
B. Light shines through all objects, allowing people to see them.
C. Light enters the eye before striking an object, allowing people to see the object.
D. Light reflects off an object and then enters the eye, allowing people to see the object.
D. Light reflects off an object and then enters the eye, allowing people to see the object.
Which best summarizes the composition of Earth’s core?
A It contains a solid outer region surrounding a liquid iron core.
B It contains a liquid outer region surrounding a solid iron core.
C It contains a semi-liquid rock outer region surrounding a liquid core.
D It contains a basalt, semi-liquid outer region surrounding a solid core.
B It contains a liquid outer region surrounding a solid iron core.
During the day, the sand at the beach is very warm; while at night, it is cooler. Why does this occur?
A The sand reflects the sun’s energy during the day, causing it to become warmer.
B The sand absorbs the sun’s energy during the day, causing it to become warmer.
C The sand scatters the sun's energy during the day, causing it to become warmer.
D The sand refracts the sun's energy during the day, causing it to become warmer.
B The sand absorbs the sun’s energy during the day, causing it to become warmer.
How are the atoms in an object affected when the temperature of an object increases?
A. They join together.
B. They vibrate faster.
C. They vibrate slower.
D. They split apart.
B. They vibrate faster.
How does the anther help with reproduction of a flowering plant?
A It develops into a fruit after fertilization occurs.
B It moves pollen to the roots of the plant.
C It grows the seeds for the plant.
D It produces and stores pollen.
D It produces and stores pollen.
Why are some coffee cups composed of ceramic material?
A Ceramic materials are conductors that limit heat transfer.
B Ceramic materials are insulators that limit heat transfer.
C Ceramic materials are conductors that aid heat transfer.
D Ceramic materials are insulators that aid heat transfer.
B Ceramic materials are insulators that limit heat transfer.
Which best describes Earth’s crust?
A It is stationary and unable to move.
B It is thicker than the mantle and the core.
C It is located between the outer and the inner core.
D It is composed of continental and oceanic plates.
D It is composed of continental and oceanic plates.
Which factor makes Earth different from all the other planets in the solar system in its ability to support life?
A The Earth is exposed to rays from the sun.
B The Earth has only one moon that orbits around it.
C The Earth rotates in an elliptical orbit around the sun.
D The Earth has a breathable atmosphere.
D The Earth has a breathable atmosphere.
In which situation would the atoms in an object begin to move closer together during a phase change?
A. Heat is removed as a gas turns into a liquid.
B. Heat is removed as a liquid turns into a gas.
C. Heat is added as a solid turns into a gas.
D. Heat is added as a liquid turns into a solid.
A. Heat is removed as a gas turns into a liquid.
Which best summarizes the order of energy flow in a food chain?
A sun to decomposers to producers to consumers
B sun to consumers to decomposers to producers
C sun to producers to consumers to decomposers
D sun to producers to decomposers to consumers
C sun to producers to consumers to decomposers
Why do seeds go through a period of dormancy?
A It allows time for the right conditions to occur before the seed germinates.
B It allows time for dry soil to accumulate before the seed germinates.
C It allows time for sunlight to appear before the seed germinates.
D It allows time for pollination to occur before the seed germinates.
A It allows time for the right conditions to occur before the seed germinates.
Which causes the movement of tectonic plates?
A gravitational pull between Earth and the moon
B convection occurring beneath the Earth’s crust
C energy produced by earthquakes within the Earth
D rotation of liquid rock found within the core
B convection occurring beneath the Earth’s crust
Which represents information that is gained as a result of space exploration?
A weather and climate patterns that occur on Earth
B existence of the sun and the moon in the solar system
C how to use coal and natural gas as energy resources
D location of plates found upon Earth’s surface
A weather and climate patterns that occur on Earth
How does 250 mL of water compare to 500 mL of water?
A They have the same melting point but different boiling points.
B They have the same boiling point but different melting points.
C They have the same volume but different densities.
D They have the same density but different volumes.
D They have the same density but different volumes.
A plant begins to bend when a tall building is built near it. Why does this occur?
A It is adjusting to changes in the temperature.
B It is growing away from the light source.
C It is adjusting to changes in the soil.
D It is growing toward the light source.
D It is growing toward the light source.
How could acid rain affect the trees living in a forest?
A It could strengthen the leaves of the trees in the forest.
B It could alter the soil quality, adding toxins that harm the trees.
C It could remove chemicals in the soil that harm the trees in the forest.
D It could change the soil quality, providing nutrients to the trees.
B It could alter the soil quality, adding toxins that harm the trees.