Intro to Magnetism

Magnetism is a force of ____________________________ that occurs between two _____________ objects.

• attraction or repulsion, magnetic

• external or internal, magnetic

• external or repulsion, electronic

• attraction or internal, electronic

The magnetic ____________ around a bar magnet is shown above.

• legs

• flowers

• field

• direction

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

• North, South

• East, West

• Positive, Negative

• Positive, South

Probably the most useful thing about electromagnets is that they can be turned ________ and ________.

• on, off

• positive, negative

• north, south

• on, negative

If two magnets are close together, the magnetic force will be ________.

• smelly

• weak

• strong

• positive

If two magnets are placed so that a north pole and a south pole are facing each other, they will _____________ each other.

• date

• spin

• repel

• attract

Which poles are attracted? 

• north and north
• south and south
• north and south

Which poles repel?

• north and south
• south and north
• south and south

Which metals are attracted to magnets? 

• iron, nickel, cobalt
• gold, silver, platinum
• copper, magnesium, aluminum

How is Earth's magnetic field similar to that of a magnet?

• It's shaped like a horseshoe.
• It has north and south poles.
• It is made plastic.
• It is hundreds of miles long.