Magnets

Front

What are the two types of magnetic poles?

Back

North and South.

Front

What happens when two like poles of a magnet are brought together?

Back

They repel each other.

Front

What happens when two opposite poles of a magnet are brought together?

Back

They attract each other.

Front

What is an electromagnet?

Back

A type of magnet in which the magnetic field is produced by an electric current.

Front

How can you increase the strength of an electromagnet?

Back

By using thicker wire, increasing the number of coils, or increasing the current.

Front

What is a noncontact force?

Back

A force that can act on an object without physical contact, such as magnetic force.

Front

What is the primary material that makes up the Earth's core?

Back

Iron.

Front

What is the role of electricity in magnetism?

Back

Electricity can create a magnetic field and re-magnitize a magnet.

Front

What is the difference between a permanent magnet and an electromagnet?

Back

A permanent magnet maintains its magnetic properties without an external power source, while an electromagnet requires electricity to generate a magnetic field.

Front

What is magnetic field strength measured in?

Back

Tesla (T).