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Magnetism & Electromagnets Review

Authored by Kristi Nelson

Science

8th Grade

NGSS covered

Used 11+ times

Magnetism & Electromagnets Review
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30 questions

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1.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

Media Image

While electric current is flowing through a wire, what surrounds the wire?

a magnetic field
a glowing light
neutrons
protons

Tags

NGSS.MS-PS2-3

NGSS.MS-PS2-5

2.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

What two forces are required for generators and electric motors to work?

magnetism and thermal

electricity and thermal

electricity and magnetism

magnetism and radiant

Tags

NGSS.MS-PS2-3

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Media Image

How are electromagnets different from permanent magnets?

magnets can be turned on/off

you can turn an electromagnet on/off

magnets are more powerful

magnets have a North and South pole

4.

MULTIPLE CHOICE QUESTION

3 mins • 1 pt

Media Image

In large generators in power plants, ___________ rotate inside a coil of wire to produce an electric current.

Wind
Water
Magnets
Circuits

Tags

NGSS.HS-PS2-5

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Media Image

What is the device seen here?

generator
electric motor
electromagnet
magnet

Tags

NGSS.MS-PS2-3

NGSS.MS-PS2-5

6.

MULTIPLE CHOICE QUESTION

3 mins • 1 pt

What is the relationship between electrical current and magnetic field strength in an electromagnet?

When current is increased, magnetic field strength increases
When current is increased the strength of magnetic field decreases
When the current is decreased, the strenght of the magnetic field is increased.
There is an "indirect proportion," meaning, if the value of one goes up, the value of the other goes down.

Tags

NGSS.HS-PS2-5

7.

MULTIPLE SELECT QUESTION

30 sec • 1 pt

Which of the following materials would be attracted to a magnet? (Select the 3 correct answers)

Steel

Magnesium

Cobalt

Nicket

Zinc

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