Magnetism

What do electric charges have in common with magnetic poles? Choose all that apply.

• These forces can attract and repel without touching.

• These forces can only attract.

• As the distance of seperation increases the strength of the force decreases.

• Electric charges are not similar to magnetic poles.

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NGSS.MS-PS2-3

NGSS.MS-PS2-5

What is a major difference between electric charges and magnetic poles?

• Electric charges can exist on their own.

• Magnetic poles can exist on their own.

• There are no differences.

What is a magnetic field?

• A force field

• a magnetic field does not exist

• stationary electric charge

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NGSS.MS-PS2-3

NGSS.MS-PS2-5

What is the source of a magnetic field?

• Moving electric charge

• Stationary Electric Charge

• There is no source.

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NGSS.HS-PS2-5

Why are not all atoms tiny magnets?

• Because, the spins must be in the same direction.

• Every spinning electron is not a tiny magnet.

• Because, the spins must be in opposite direction.

A north pole of the magnet is brought near a south pole

• they will repel

• they will attract

• so? nothing will happen

A magnetic domain is

• a cluster of aligned atoms

• a singular aligned atom

• a cluster of non-aligned atoms

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NGSS.MS-PS2-3

NGSS.MS-PS2-5

In order to make an electromagnet, you need

• a magnet, a nail, some wires

• a battery, a nail, and a magnet

• a battery, a coil of wire, and a nail

• a loop of wire, contacts, and a battery

The source of all magnetism is

• tiny pieces of iron

• ferromagnetic materials

• moving electric charge

• stationary charge

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NGSS.MS-PS2-3

How can you destroy a magnet? Choose all that apply.

• Drop It

• Heat It

• Cover it with paper

• You can't destroy it