Electricity/Magnetism/Matter

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

Tags

NGSS.MS-PS2-3

What will happen when these magnets are brought close together?

• They will attract each other.
• They will repel each other.
• Both magnets will turn to the left
• Both magnets will turn to the right

Tags

NGSS.MS-PS2-3

NGSS.MS-PS2-5

True or False: All metals stick to magnets.

• True
• False

Tags

NGSS.MS-PS2-3

Where is the force of attraction the strongest on a magnet?

• at the poles
• in the middle
• above the magnet
• below the magnet

Tags

NGSS.MS-PS2-3

NGSS.MS-PS2-5

The AREA around a magnet where you feel a pulling force.

• Gravity
• Magnetic Field
• Magnetism

Tags

NGSS.MS-PS2-5

An example of the best insulator is

• copper
• salt
• plastic
• sand

Tags

NGSS.MS-PS3-3

An example of a good conductor is

• copper
• sand
• plastic

The coil of current-carrying wire with an iron core is called a(n)

• ferromagnet
• electromagnet
• compass
• maglev

Tags

NGSS.HS-PS2-5

NGSS.HS-PS3-5

Electromagnets are strong magnets that can be turned on and off. 

• True
• False

Why does opening a switch in an electric circuit stop the flow of current?

• Charges can't flow through a broken path.
• The magnetic domain is interrupted.
• The magnetic field disappears.