Types of Energy Review

Is light considered matter? Explain why or why not. Answer with the correct words in the blanks: Light is not matter because it has no ____ and does not take up ____. Instead, it is a form of ____ that helps us see things.

(a)  

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Which statement best explains how sound is made when a drum is hit?

• All sounds are made when an object vibrates. Then, the vibrations spread through the matter around the object, such as the air around the drum.

• A drum or other object can only make a sound when it vibrates, or moves rapidly back and forth. Stopping all movement would stop the sound.

• Warming or cooling the drum does not produce sound.

• Sound and light are two different forms of energy. When a drum is hit, sound is created, not light.

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NGSS.MS-PS4-1

Fill in the blanks: When a pie or other object becomes cooler, it ____ some of its ____ energy.

(a)  

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Which of the following statements best explains what happens to the thermal energy of bread as it becomes warmer in a toaster?

• The bread will gain thermal energy as it becomes warmer in a toaster.

• Shining a light on the bread will increase its thermal energy only slightly, if at all.

• Cutting the bread or spreading butter across it will not change the thermal energy of the bread.

• Spreading butter across the bread will change the thermal energy of the bread only slightly, if at all.

• The bread will lose thermal energy as it becomes cooler in a refrigerator.

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NGSS.MS-PS3-4

NGSS.MS-PS1-4

Define thermal energy in general terms.

(a)  

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Light has many uses. Enter the letters to match each photo with what it uses light for.

• D

• helping people see you in the dark

• C

• showing pictures and words

• B

• finding things in the dark

• A

• providing energy for electricity

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NGSS.4-PS4-2

Observe the illustration of a kitchen. What appliances could you use to change the thermal energy of a slice of bread? Select TWO answer choices.

• toaster

• lamp

• knife

• butter

• refrigerator

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NGSS.MS-PS3-4

NGSS.MS-PS1-4

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Which of the following uses sound to send an urgent message?

• A. A smartphone makes a wide variety of sounds, but they are not exclusively for warning people of danger.

• B. A marching band makes music, which has sounds that entertain people.

• C. Both a smoke detector and a police siren use loud, harsh sounds to get people's attention quickly. Both sounds urge people to take action, such as leaving a building or getting out of the way.

• D. The crackling sounds from burning wood do not have any intentional purpose. They do not communicate an urgent message.

Which object releases thermal energy to start a fire?

• School bus

• Electric hair dryer

• Laptop computer

• Lit match

• Can opener

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NGSS.MS-PS1-2

Identify two other examples of uses of thermal energy and explain your choices of objects.

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NGSS.MS-PS3-4