Exploring Energy and Its Transformations

Which of the following is an example of kinetic energy?

• A stretched rubber band

• A moving car

• A battery

• A book on a shelf

Tags

NGSS.MS-PS3-1

What is the law of conservation of energy?

• Energy can be created and destroyed

• Energy can only be transferred or transformed, not created or destroyed

• Energy is always lost in transformations

• Energy only exists in one form

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NGSS.MS-PS3-5

NGSS.MS-PS3-4

Which of the following is NOT a form of potential energy?

• Gravitational energy

• Chemical energy

• Thermal energy

• Elastic energy

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NGSS.MS-PS3-2

Which type of energy is stored in the bonds of molecules?

• Electrical energy

• Chemical energy

• Sound energy

• Nuclear energy

A ball is dropped from a height. Which energy transformation occurs as it falls?

• Kinetic to potential

• Potential to kinetic

• Chemical to thermal

• Electrical to sound

Tags

NGSS.MS-PS3-2

NGSS.MS-PS3-5

NGSS.MS-PS3-1

Which scenario best demonstrates the transformation of electrical energy to thermal energy?

• A flashlight turning on

• A toaster heating bread

• A windmill spinning

• A ball rolling down a hill

If a pendulum swings back and forth, at which point does it have the greatest potential energy?

• At the lowest point of its swing

• At the highest point of its swing

• In the middle of its swing

• When it stops moving

Tags

NGSS.MS-PS3-2

A student rubs their hands together and feels them get warmer. Which energy transformation is taking place?

• Chemical to electrical

• Kinetic to thermal

• Potential to sound

• Electrical to kinetic

Tags

NGSS.MS-PS3-5

NGSS.MS-PS1-4

Tags

NGSS.MS-PS3-2

A student observes a bouncing ball and notices that it doesn’t bounce as high each time. Using the law of conservation of energy, explain why the ball loses height after each bounce.

• Some energy is destroyed during each bounce

• Some energy is transformed into thermal and sound energy, so less energy remains for bouncing

• The ball gains energy from the ground

• The ball’s mass decreases after each bounce

Tags

NGSS.MS-PS3-5