Magnets and Electromagnetism Test

The north and south poles of two magnets will _______ each other.

• attract

• repel

Tags

NGSS.MS-PS2-3

NGSS.MS-PS2-5

What is an electromagnet?

• a magnet that creates an electric current

• a magnet created by an electric current

• a magnet that has an electric charge

• an electric charge that is magnetic

Electricity is the flow of _____________.

• protons

• electrons

• neutrons

• matter

What kind of magnet can be turned on and off?

• a refrigerator magnet
• an electromagnet
• magnetite
• iron

Tags

NGSS.MS-PS2-3

This is a picture of a simple electromagnet. How can the electromagnet be made stronger?

• Add more coils of wire to the nail.
• Use a smaller battery.
• Reverse the poles of the magnet.
• Remove all the coils and the nail.

Tags

NGSS.MS-PS2-3

In order for an electromagnet to be formed, an __________ current must pass through a coil of __________ wrapped around an ________ core.

• wire, iron, electric
• electric, wire, iron
• iron, electric, wire
• excited, hair, apple

Which is not a way to strengthen an electromagnet?

• Use a bigger power source

• Use a plastic wire

• Use a bigger magnetic material

• Wrap the wire around the magnetic material more times.

Why are these magnets not touching?

• They are like poles and are repelling

• They are opposite poles and are repelling

• There is an electric field

Tags

NGSS.MS-PS2-3

NGSS.MS-PS2-5

True or False: A current-carrying wire produces a magnetic field.

• True

• False

Tags

NGSS.HS-PS2-5

What effect will the south pole of one magnet have on the south pole of another magnet?

• Repulsive
• Attractive
• Combative
• No effect

Tags

NGSS.MS-PS2-3

NGSS.MS-PS2-5