Gravity, Magnetism, and Electricity Test

Opposites _________ and like charges ____________.

• attract, repel
• repel, attract

On a magnet two north poles will....

• attract
• repel
• not interact

How many poles do ALL magnets have?

• One
• Two
• Three
• Four

What do you call materials that electrons cannot easily move through?

• Conductor
• Metal
• Insulator
• Static

Static electricity is when __________ builds up.

• protons
• neutrons
• electrons

An object can be negatively charged by

• Gain an electron
• Gain a proton
• Gain a neutron

Where would you be the heaviest?

• Earth
• Moon
• Both are the same

What happens to the strength of a magnetic field as you slowly move away from the magnet?

• Increases
• Decreases
• Does not change
• Disappears

What stops charged particles from the sun from hitting Earth?

• the mid-ocean ridges
• Earth's atmosphere
• high altitude electric fields
• Earth's magnetic field

Do magnetic field lines cross over one another?

• Yes
• No