Electromagnetism

What does the magnetic field look like on a straight wire?

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Tags

NGSS.MS-PS2-3

What does a magnetic field look like around a bar magnet?

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Tags

NGSS.MS-PS2-5

How are electromagnets different from magnets?

• magnets can be turned on/off
• you can turn an electromagnet on/off
• magnets are more powerful
• magnets have a North and South pole

Particles with opposite charges ____________ and particles with same (or like) charges ____________.

• attract, repel

• repel, repel

• attract, attract

• repel, attract

Tags

NGSS.MS-PS2-3

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

• The strength of the magnetic field increases.

• The strength of the magnetic field doesn't change.

• The strength of the magnetic field is doubled.

• The strength of the magnetic field decreases.

Tags

NGSS.MS-PS2-3

What is responsible for creating a magnetic field around Earth?

• Earth's crust

• Earth's iron core

• Earth's mantle

• Earth's atmosphere

Tags

NGSS.MS-PS2-3

NGSS.MS-PS2-5

What is a magnetic material?

• A material that becomes positively charged when a magnet is brought near it.

• A material that produces a magnetic force.

• A material that becomes negatively charged when a magnet is brought near it.

• A material that is attracted or repelled by a magnet.

Tags

NGSS.MS-PS2-3

What happens if you cut a magnet in half?

• Nothing

• The magnets repel

• There will be two magnets

Normally, atoms are electrically neutral because there are ____.

• more protons than electrons

• more electrons than protons

• equal numbers of protons and neutrons

• equal numbers of protons and electrons

Two objects will attract one another when they have ___.

• like charges

• the same amount of charge

• opposite charges

• no charge