Energy and Motion

Which describes an object with the greatest amount of energy of motion?

• A rock rolling down a hill

• A rock at the bottom of the hill

• A rock at the top of the hill

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An electric fan transforms electrical energy into motion.

• True

• False

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In the electrical circuit, which part changes electrical energy into light?

• battery

• wire

• filament

• socket

The following picture shows

• electrical energy being transformed into motion

• electrical energy being transformed into light energy

• electrical energy being transformed into heat energy

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As far back as about 1,000 years ago, people claimed that they had built a perpetual motion machine. They claimed the machine would run forever without having to do anything to it. Scientists know that a perpetual motion machine is impossible to build. The reason is that every machine constantly needs one thing to stay in motion. What does every machine need to stay in motion?

• electricity

• energy

• heat

• mass

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Which of the following demonstrates energy causing motion or change?

• a glass falling from a table

• a car sitting in a parking lot

• a scooter hanging in the garage

• a light switch turned to the off position

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Sound energy travels as waves. Which other type of energy travels as waves?

• wind

• light

• electrical

• geothermal

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The particles in heat energy move

• slow

• fast

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If you pluck a guitar string, it moves back and forth quickly and produces sound. This motion is called ___________.

• vibration

• heat

• electricity

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Which energy conversion is happening in this picture?

• heat to mechanical

• electrical to motion

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