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Riddles - Energy Systems

Riddle

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Vocabulary

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Viet Nam

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Riddles - Energy Systems
 

Riddles - Energy SystemsOnline version

Vocabulary

by Luce
1

I am a group of objects where energy enters, changes, and leaves.

Hints

A flashlight and a toaster can both be examples of me.

2

I am the energy that enters a system.

Hints

In a flashlight, I may come from the battery.

3

I am the energy that leaves a system.

Hints

In a lamp, I may be the light you see.

4

I happen when energy changes from one form to another.

Hints

A toaster changes electrical energy into heat because of me.

5

I am energy that spreads out and becomes less useful.

Hints

Some energy may leave a machine as unwanted heat.

6

I am the area or things around a system.

Hints

When heat spreads away from a toaster, it goes into me.

7

I am related to heat.

Hints

You can feel me when a toaster warms bread.

8

I am related to electricity.

Hints

I can move through a circuit and power a device.

9

I am related to movement.

Hints

A roller coaster has me when it is moving down a track.

10

I describe a system that uses energy well and wastes less.

Hints

A good machine should try to be me.

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