Magnetism Notes

Dropdown

Opposite poles on a magnet will ​

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and like poles on a magnet will ​

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Multiple Select

What two things will magnets always do?

• Repel or attract other magnets

• Find Iron

• Swing freely

• Point towards north

Multiple Choice

The atoms or domains of a magnetized material point in what way?

• Left

• Right

• Randomly

• In one direction

Multiple Choice

Is it possible to destroy an object's magnetism?

• Yes

• No

Multiple Choice

If you break a magnet in half what poles will each piece have?

• North and North

• South and South

• North and South

• None

Multiple Choice

What do scientists think creates the Earth's magnetic fields and poles?

• Gravity

• Liquid rotating core

• Volcanoes

• Earthquakes

Multiple Choice

Where is magnetic North location close to?

• geographic North

• Equator

• geographic South

• Tropic of Capricorn

Multiple Choice

Are Earth's magnetic poles located in the same place as the geographic poles?

• Yes

• No

Multiple Choice

Which of the following is NOT one of the three distinct characteristics of the magnetic field produced by a current?

• The field can attract or repel objects

• The field can have its direction reversed

• The field can have its strength changed

• The field can be turned on or off

Dropdown

A coil of wire with a current is called a ​ ​

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. An electromagnet is a solenoid with a ​

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or iron core.

Multiple Choice

Which of the following is NOT a way to increase the strength of an electromagnet?

• Increase the current

• Add more loops or coil them tighter together

• Use a stronger magnet core

• Use a stronger battery

Multiple Choice

Why aren't the geographic poles and magnetic poles in the same place?

• So we don't confuse them

• Geographic poles don't move, magnetic poles can move

• So they are easier to find

• Magnetic poles don't move, geographic poles can move

Multiple Choice

Why is the Earth like a giant bar magnet?

• It attracts and repels magnets

• It has a north and south

• It has magnetic poles and magnetic fields

• It spins on an axis