Unit 4 Forces at a Distance Magnetism and Electromagnetism

Front

What is magnetism?

Back

Magnetism is a force that can attract or repel certain materials, primarily metals like iron, nickel, and cobalt.

Front

What is an electromagnet?

Back

An electromagnet is a type of magnet in which the magnetic field is produced by an electric current.

Front

What materials are good conductors of electricity?

Back

Good conductors of electricity include metals like copper, silver, and aluminum.

Front

What is the effect of bringing two north poles of magnets together?

Back

When two north poles of magnets are brought close to each other, they repel each other.

Front

How can you increase the strength of an electromagnet?

Back

You can increase the strength of an electromagnet by adding more coils of wire around the core.

Front

What is the relationship between electricity and magnetism called?

Back

The relationship between electricity and magnetism is called electromagnetism.

Front

What type of core is best for making electromagnets?

Back

Iron is the best type of core for making electromagnets.

Front

What happens when a magnet is cut in half?

Back

When a magnet is cut in half, each half becomes a new magnet with its own north and south poles.

Front

What is a magnetic field?

Back

A magnetic field is the area around a magnet where magnetic forces can be felt.

Front

What is the difference between a permanent magnet and a temporary magnet?

Back

A permanent magnet maintains its magnetism over time, while a temporary magnet only acts as a magnet when in a magnetic field.