Magnets & Magnetic Fields

What is a magnet primarily made of?

• Plastic

• Wood

• Iron or Steel

• Glass

When you cut a magnet in half, what happens to the poles?

• You lose one pole

• You create two smaller magnets, each with its own poles

• The magnet disappears

• The poles merge into one

Which of the following statements is true about like poles of magnets?

• They attract each other

• They repel each other

• They have no effect on each other

• They create a magnetic field

Tags

NGSS.MS-PS2-3

NGSS.MS-PS2-5

What is the primary function of magnets in electric motors?

• To create heat

• To convert electrical energy into mechanical energy

• To store data

• To produce light

Tags

NGSS.HS-PS2-5

In which of the following devices would you find a magnet being used?

• A refrigerator

• A microwave

• A hard disk drive

• A toaster

What is the Earth's magnetic field primarily caused by?

• The movement of water

• Molten iron in the Earth’s core

• Solar winds

• The atmosphere

How does temperature affect a magnet?

• It has no effect

• Higher temperatures always make magnets stronger

• It can weaken the magnetic field

• It only affects the color of the magnet

Tags

NGSS.MS-PS2-5

What is an electromagnet?

• A permanent magnet

• A magnet created by the flow of electrical current

What determines the strength of an electromagnet?

• The color of the wire

• The material of the wire

• The amount of electric current and the number of turns of wire around the core

• The length of the wire

Tags

NGSS.MS-PS2-5

Which of the following is NOT an application of magnets?

• MRI machines

• Electric vehicles

• Solar panels

• Hard disk drives

Tags

NGSS.MS-PS2-3

NGSS.MS-PS2-5