Magnets Review

Front

What happens when two north poles of a magnet are placed together?

Back

they repel

Front

How are electromagnets different from magnets?

Back

You can turn an electromagnet on/off.

Front

The area of magnetic force around a magnet is known as its _____________.

Back

magnetic field

Front

The force of magnetism is stronger when magnets are ________________

Back

closer together

Front

What do the lines around this magnet represent?

Back

Magnetic Field

Front

Magnetism is generated by moving

Back

electrons.

Front

In a magnetized material, most of the domains are arranged in the same direction. In a material that is not magnetized, the domains point in _________ directions.

Back

random

Front

The strength of an electromagnet can be affected by: changing the current in the wire, changing the number of loops in the solenoid, changing the size of the iron core.

Back

all of the above

Front

Electric motors are devices that convert _____ energy into  _____ energy.

Back

electrical; mechanical

Front

How does a generator work?

Back

the magnetic field exerts a force on the moving electron that pushes them along the wire creating an electric current