Earth's magnetic field compass

How many poles does Earth have?

• One pole

• Two poles

• Three poles

What are the names of the Earth's pole?

• North and South

• East and West

• North and East

What can we use to find direction?

• Ruler

• Scale

• Compass

The North pole is attracted to the _____________

• South pole

• West pole

• East pole

What is around a magnet , that makes iron move?

• Compass

• Magnet

• Magnetic field

The strongest part of a magnet is...

• the bars.
• the force field.
• the poles. 
• the middle.

There are several modern uses of magnets.  Magnets allow high speed trains to ______________________ above the track.  They go faster because without touching the tracks there is no friction to slow them down.

• collide
• levitate
• attract
• repair

An electron and a proton are both initially moving with the same speed and in the same direction at 90˚ to the same uniform magnetic field. They experience magnetic forces, which are initially: 

• identical
• equal in magnitude but opposite in direction 
• in the same direction and differing in magnitude by a factor of 1840 
• in opposite directions and differing in magnitude by a factor of 1840 

Magnets can interact without touching.

• True
• False

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

• they repel
• they attract
• they cancel each other out
• the strength of the magnet is doubled