Unit 5 Forms of Energy

David twists this rubber band and holds it still. What happens to the pencils energy when he lets go?

• Kinetic energy decreases

• Potential energy increases

• Kinetic energy changes to sound energy.

• Potential energy becomes kinetic energy.

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Martha goes down a slide. What happens to the mechanical energy as she goes down?

• It decreases

• It stays the same

• It changes to potential energy

• It loses potential energy.

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What is kinetic energy?

• energy at rest

• total of potential and mechanical energy

• energy of motion

• energy waves

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Which object converts electrical energy into sound and light energy?

• lamp

• Playstation

• fan

• TV

Which has light and heat energy but not sound?

• 
• 
• 
• 

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Which item would REFRACT light?

• lake

• mirror

• dirt

• tree

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What will happen to the potential energy after the knob is turned and then let go?

(choose 2)

• becomes sound energy

• becomes kinetic energy

• becomes light energy

• becomes electrical energy

• becomes heat energy

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What 3 types of energy that electrical energy changes to when a computer is on?

• light

• kinetic

• heat

• sound

• potential

Mechanical energy is kinetic plus potential energy. Does mechanical energy change when something falls off a table?

• Yes

• No

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What will happen when the man lets go of the rock?

• Its kinetic energy will change

• Its mechanical energy will change

• Nothing will change

• Its potential energy will change

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