Energy Transfers Revised

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created 2 days ago by barnesl
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1

Which of these objects are attracted to a magnet?

paper clip, iron nail, aluminum pop can, aluminum foil, copper penny, magnet, silver colored cloth, magnet, plastic pen

paper clip, iron nail, magnet

2

How would you design an investigatyion to test to see if an object was magnetic?

Hold the object next to a magnet. Observe to see if the object is attracted. Record the results in a data table.

3

North poles are ___________ to the South poles of a magnet.

North poles are __________ to the North poles of a magnet.

attracted (opposites come together)

repelled (same poles push away)

4

With the help of a compas, travelers can .....

find the direction North.

5
card image

This pictures shows a compelte circuit. Describe how to make a complete circuit that will light the bulb and why it works.

...

6
card image

What are the three parts of a complete circuit shown in the photo.

Source - batter

Path - wire

Load - lightbulb

7

Give an example of how electrical energy is used in your home to transfer electrical energy into mechanical energy (motion)?

Fan

8

Give an example of how electrical energy is used in your home to transfer electrical energy into heat energy?

Microwave, toaster, heater

9

Give an example of how electrical energy is used in your home to transfer electrical energy into sound energy?

Alexa, radio, television, alarm

10

Energy is a concept that describes:

change or work

11

Which of these items will be attracted to a magnet:

steel paper clip, copper coin, aluminum can, rubber band

steel paper clip

12

Rachel tested forks to see if all forks are attracted to magnets. She places a magnet next to a plastic fork and a stell fork. What would you expect Rachel to observe?

Only the stell fork is attracted to the magnet.

13

Where is a magnet the strongest?

At the poles.

14

What investigation we conducted illustrates the magnetic effect in an electrical circuit?

card image

An electromagnet.

15

To keep his hands warm on a cold day, Isaiah rubbed his hands together. How did the rubbing help keep his hands warm?

Heat is produced through the friction of rubbing the hands against eachother.

16

What materials will work as a switch?

All metals, because all metals conduct electricity. For example, aluminum foil, a penny, a metal spoon, and a paperclip could all be used as a switch to complete a circuit.