Magnetism and Electricity Review

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

A magnetic field is a field of force that is produced by moving ________ charges.

• northern

• positive

• gravitational

• electric

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

Some objects that normally aren't magnetic can become magnetized when connected to a circuit. Items that are magnetized in this way are called ________.

• electromagnets

• electrons

• electrochromic devices

• permanent magnets

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

Although magnetic fields are _____________, one common way that people investigate them is to use ________ filings.

• invisible, iron

• touchable, iron

• invisible, plastic

• touchable, plastic

What will happen when these magnets are brought close together?

• They will attract each other.
• They will repel each other.
• Both magnets will turn to the left
• Both magnets will turn to the right