Magnetic Forces

Front

What does the needle in a compass align with?

Back

The Earth's magnetic field.

Front

What do magnetic force field lines indicate when they show repulsion?

Back

Repulsive force by like poles.

Front

Which diagram would produce the strongest magnetic force?

Back

Diagram B.

Front

True or False: Objects must touch to be affected by magnetic force.

Back

False.

Front

What do magnetic force field lines indicate when they show attraction?

Back

Attractive force by opposite poles.

Front

What is a magnetic field?

Back

A region around a magnet where magnetic forces can be felt.

Front

What are like poles of a magnet?

Back

The same type of poles (North-North or South-South) that repel each other.

Front

What are opposite poles of a magnet?

Back

Different types of poles (North-South) that attract each other.

Front

What is the source of Earth's magnetic field?

Back

The movement of molten iron in the Earth's outer core.

Front

What is magnetism?

Back

A force that can attract or repel certain materials, primarily metals.