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

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Kinetic energy can be described as

• energy in motion

• stored energy

• a chemical reaction

• connected energy

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Which is the best example of an object with only potential energy?

• water being poured out of a pitcher

• a ball being thrown across a field

• a boulder resting on top of a cliff

• a boat sailing through the water

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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.

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The illustration shows a roller coaster and indicates four different positions the car might be at as it moves along the track.

At which point in the roller coaster's journey is its potential energy the greatest?

• W

• X

• Y

• Z

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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.

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Energy is measured in

• Kilograms

• Joules

• Liters

• Centimeters

You throw a ball into the air as shown in the diagram. At what point does the ball have the most potential energy?

• W

• X

• Y

• Z

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Can energy be changed?

• yes
• no

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Students conduct an experiment using a toy car with the mass of 10g, a toy car with the mass of 20g, and a toy car with the mass of 30g. The students want to test the cars on a ramp and measure how far the cars traveled. Evaluate the information and determine the question they are trying to test with this experiment.

• Does the height of the ramp influence the amount of potential energy?

• Does the mass of the car influence the amount of kinetic energy?

• Does the amount of incline determine how far the car will travel?

• Does the mass of the object influence the amount of potential energy?

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