Electromagnetism

Protons have a ____________ charge.

• negative

• neutral

• positive

A charged atom is called a(n) __________.

• proton

• neutron

• electron

• ion

What happens when an electric current flows through a wire?

• The wire begins to spin.

• Nothing happens.

• A field of gravity is created around the wire.

• A magnetic field is created around the wire.

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The south ends of two magnets will _________ each other.

• repel

• attract

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The area of magnetic force around a magnet is known as its ____________.

• magnetism

• magnetic current

• magnetic field

• electric current

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A _______________ is a current-carrying coil of wire with many loops.

• magnet

• electromagnet

• solenoid

• compass

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A _____________ transforms mechanical energy into electrical energy.

• generator

• electromagnet

• circuit

• magnetic field

What three minerals are attracted to a magnet?

• Gold, copper, cobalt

• Cobalt, aluminum, silver

• Iron, copper, aluminum

• Iron, nickel, cobalt

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The strongest parts of the magnet are ...

• fronts

• backs

• poles

• middle

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A magnet will pick up an object that is made of...

• plastic

• iron or steel

• glass

• copper

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