Potential and Kinetic Energy Review

Conservation of energy means that

• energy can be created but not destroyed

• energy can be destroyed but not created

• energy can be both created and destroyed

• energy can be neither created nor destroyed

Answer explanation

Conservation of energy states that energy cannot be created or destroyed.

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Kinetic energy can be described as

• energy in motion

• stored energy

• a chemical reaction

• connected energy

Answer explanation

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A bicycle rider is traveling up a hill. When the rider reaches the top of the hill, she stops to rest. Then she travels down the hill. Which statement correctly describes the potential energy and the kinetic energy of the bicycle rider?

• As the rider moves up the hill, her kinetic energy increases, and her potential energy decreases.

• As the rider reaches the bottom of the hill, her kinetic energy and her potential energy decrease.

• When the rider is at the top of the hill, her potential energy is the greatest, and her kinetic energy is the least.

• When the rider goes down the hill, her potential energy increases, and her kinetic energy decreases.

Answer explanation

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As a boulder rolls from the top of a hill to the bottom, how does its potential and kinetic energy change?

• Potential and kinetic energy both increase.

• Potential energy increases and kinetic energy decreases.

• Potential energy decreases and kinetic energy increases.

• Potential and kinetic energy both increase.

Answer explanation

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Sammy studied kinetic and potential energy by observing apples on a tree during a field investigation. What type of energy do the apples on the tree have?

• elastic potential energy

• mechanical energy

• gravitational potential energy

• sound energy

Answer explanation

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If a green golf ball is dropped from a height of 7 feet and a yellow golf ball is dropped from a height of 12 feet, which ball has greater potential energy before it is released?

• yellow

• green

• Both have the same amount of potential energy.

• Neither will have more potential energy than the other.

Answer explanation

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When a tennis ball is dropped, potential energy is destroyed and kinetic energy is created.

• True

• False

Answer explanation

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Describe the energy in the picture.

• Gravitational Potential

• Kinetic

• Elastic Potential

• No energy.

Answer explanation

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What word best describes Kinetic Energy?

• Stored

• Motion

• Elastic

• Gravity

Answer explanation

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What word best describes potential energy?

• Stored

• Motion

Answer explanation

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