Types of Energy, Sound, and Light Review

For a flashlight to turn on, chemical energy from the batteries changes to electrical energy that flows to the lightbulb. The lightbulb changes electrical energy into light energy. What is this an example of?

• A. energy transformation

• B. energy exchange

• C. energy being created

• D. energy being destroyed

A child hitting a drum creates vibrations that produce

• Sound Energy

• Electrical Energy

• Thermal Energy

• Chemical Energy

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Identify the statement that correctly explains what happens when energy transfers in a system.

• A. About 75% of the energy is transferred, while the rest is destroyed.

• B. All of the energy is transferred in different amounts to different forms.

• C. Half of the energy is transferred in different amounts to different forms.

• D. Some of the energy gets transferred, while a portion is lost along the way.

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Thermal energy is

• A. the internal energy of an object due to the kinetic energy of its particles

• B. the external energy of an object due to its potential energy

• C. the internal energy of an object due to the stored energy of its particles

• D. the external energy of an object due to its exposure to the Sun

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Which statement is true?

• A. A lamp changes heat energy to electrical energy.

• B. A lamp changes light energy to electrical energy.

• C. A lamp changes electrical energy to light and heat energy.

• D. You cannot change energy from one form to another.

Electrical energy is transferred when an iron is plugged into an outlet. What type of energy does the electrical energy become?

• A. Sound

• B. Thermal

• C. Chemical

• D. Nuclear

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Nuclear reactions in the Sun release

• A. Sound Energy

• B. Thermal Energy

• C. Chemical Energy

• D. Nuclear Energy

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Jen placed a metal spoon in cup of hot coco. She left to go get marshmellows. When she touched the spoon she was surprised to find that it was hot. She knew that the spoon was not hot when she put it in the hot coco. Which sentence best explains how this happened?

• A. The radiation from the microwave bounced onto the spoon.

• B. Spoons begin heating up when they are placed into liquids.

• C. Thermal energy is transferred from the soup to the spoon.

• D. Heat is created when metals and glasses combine with one another.

Sound travels through outer space.

• True

• False

A fire truck's siren and flashing lights are examples of energy. Choose two answers that show what kind of energy is taking place.

• heat

• light

• sound

• chemical