Magnetism

An electromagnet needs_______ to produce a magnetic field.

• fire

• electricity

• air

• none of the above

___________________ poles attract.

• north

• unlike

• south

• like

____________________ poles repel

• like

• north

• south

• unlike

What is a magnet?

• a piece of rubber that draws plastic

• a piece of material or rock that attracts other metals

• a pole that attracts trash

• a push or a pull

See image

• Neither group is attracted to magnets.

• Both groups are attracted to magnets.

• Only group A is attracted to magnets.

• Only group B is attracted to magnets.

Tom and Sally were experimenting with magnets. Magnet A picked up three paperclips. Magnet B picked up nine paperclips. What can they infer about Magnet B?

• It is painted.

• It is weaker.

• It weighs more.

• It is stronger.

True or False: All metals are attracted to magnet.

• True
• False

Which object would a magnet attract?

• a glass bottle
• a piece of paper
• a metal paper clip

• a rubber eraser

Every magnet has both a _________ pole and a __________ pole.

• North, South

• East, West

• Positive, Negative

• Positive, South

• Negative,North

The magnetic ____________ around a bar magnet is shown above.

• legs

• energy

• field

• direction