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Electromagnets

Electromagnets

Assessment

Presentation

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Science

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7th Grade

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Practice Problem

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Hard

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NGSS
K-ESS3-1, K-ESS3-3, K-ESS2-2

+2

Standards-aligned

Created by

Boaz Rottet

Used 8+ times

FREE Resource

9 Slides • 0 Questions

1

If you could have a time machine, where would you go and what would you do?



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2

​YOU WILL NEED YOUR ELECTRICITY AND MAGNETISM KITS FOR TODAY!
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Go and grab them now. You have 2 minutes!

3

Electromagnets
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Learners can:

  • explain how magnetic and electric forces are related

  • build a simple electromagnet

5

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An electromagnet is an object that acts as a magnet when electricity passes through it. Electromagnets generally produce stronger electric force than a standard magnet.

Electromagnets come in many sizes and shapes. However, all electromagnets contain:

  • power source

  • copper wire

  • iron core

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​Electromagnets

6

The wire coiled around the iron core of an electromagnet is called a solenoid. Solenoids cause electromagnets to produce stronger magnetic fields than electromagnets without solenoids. The more coils, or turns, in a solenoid, the stronger the magnetic force it will produce.

https://ccalms.blob.core.windows.net/production/31448/2eb26586-345d-4918-9b59-bc34c99de530-20240122150622884-How_Does_an_Electromagnet_Work__(HD_1080_-_WEB_(H264_4000)).mp4

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Electromagnets

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7

​Time to Create an Electromagnet!
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See if you can create an electromagnet using these different components.

8

​Time to see what this thing can do!

You have 3 minutes to run around your house and try to find the heaviest thing that you can pick up using your electromagnet.

Be sure to comply with all other house rules before trying to pick up objects.

For example, if you pick up the refrigerator with your electromagnet, make sure that you set it down gently so that you do not put a hole in your floor.

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9

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Quiz on Monday!

pattern-tertiary

If you could have a time machine, where would you go and what would you do?



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