Magnets review

Magnetic field lines around a bar magnet...

• are only perpendicular to the magnet.

• spread out from one pole and curve around to the other.

• cross back and forth over one another.

• are perfectly straight.

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What happens when two north poles of a magnet are placed together?

• they repel
• they attract
• they cancel each other out
• the strength of the magnet is doubled

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Magnetic field lines are closet together at the __________.

• poles
• lines

Magnets can interact without touching.

• True
• False

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Looking at the field lines in this picture, these two magnets are ________

• Attracting

• Repelling

• Attracting and Repelling

• Doing nothing

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What is the shape of a magnetic field around the Earth?

• 
• 
• 
• 

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How are electromagnets different from 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

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The area of magnetic force around a magnet is known as its _____________.

• magnetic field

• magnetic declination

• magnetic fan lines

• magnetic tan lines

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A ________ is a device that has a magnet on a needle that spins freely. It is used for navigation because its needle usually points north.

• calculator

• ruler

• compass

• map

magnetic field

• the space around a magnet in which magnetic forces can act on objects
• to separate or set apart
• one of the two opposite ends of a magnet
• to provide evidence that goes against a claim

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