Magnetism and Electromagnetism

Magnetic forces are ________ or _________.

• fast; slow

• large; small

• the same; opposite

• attractive; repulsive

Tags

NGSS.MS-PS2-3

Attractive magnetic forces occur between magnets or

• magnets and electric forces.

• magnets and certain materials.

• magnets and gravitational forces.

• magnets and non-metallic materials.

A magnetic pole is

• the part of a magnet that is exposed and attracts other objects.

• a region where magnetic forces exerted by a magnet are weakest.

• a region where magnetic forces exerted by a magnet are strongest.

• another name for a bar magnet that only attracts other objects from either end of the magnet.

The magnetic forces between poles are ______ when the poles are opposite, and ______ when the poles are similar.

• strongest, weakest

• weakest, strongest

• attractive, repulsive

• repulsive, attractive

Tags

NGSS.MS-PS2-3

What are two factors that affect the strength of magnetic forces?

• poles and gravity

• electricity and gravity

• distance and material

• distance and direction

Tags

NGSS.MS-PS2-3

A magnetic field is a

• force field created by a magnet.

• magnet that only repels other magnets.

• repulsive field that surrounds all magnets.

• a force field created by two or more magnets.

Tags

NGSS.MS-PS2-5

How do magnetic field diagrams represent magnetic fields?

• arrows

• compass rose

• latitude and longitude

• differently-sized circles

How do magnetic field diagrams represent the strength of a magnetic field?

• compass direction

• spacing of arrows

• the size and number of circles

• location of latitude or longitude

What would you expect to happen if you placed a magnet in a magnetic field?

• The magnet’s poles would change.

• The magnet would align with the field.

• The magnet would be attracted to or repelled from the field.

• The magnet would spin around until another magnet is placed in the field.

Tags

NGSS.MS-PS2-5

What magnetic field does a compass needle align itself to?

• Earth’s magnetic field

• its own magnetic field

• the sun’s magnetic field

• the North star’s magnetic field