Magnetism

What do the lines around this magnet represent?

• North Pole
• South Pole
• Magnetic Declination
• Magnetic Field

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If you place the North pole of a magnet next to the South pole of another magnet, they will:

• Attract
• Repel
• Do nothing
• Shatter

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A paper clip is an example of a:

• magnetic material
• permanent magnet
• bar magnet
• insulator

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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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What kind of magnet can be turned on and off?

• Fridge magnet

• electromagnet

• magnetite

• iron

The strongest part of a magnet is...

• the bars.
• the force field.
• the poles. 
• the middle.

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A simple electromagnet can be made with which of the following?

• an electric current
• a turbine and nail
• a nail, a wire, and a battery
• a compass and a battery

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On Earth, where is Magnetic North approximately located?

• The Equator
• The North Pole
• The South Pole
• New Brighton

What is responsible for the Magnetic Field around Earth?

• The Earth's crust
• The Earth's molton iron core
• The Earth's mantel
• The Sun

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An electromagnet's poles may be reversed by:

• decreasing the voltage of the coil
• increasing the number of coils
• changing the direction of current flow
• altering the material used to make the coils

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