OpenSciEd- Unit 8.3 Forces at a Distance

Front

What is an electromagnet?

Back

An electromagnet is a type of magnet in which the magnetic field is produced by an electric current. It can be turned on and off.

Front

Which materials can be used to create an electromagnet?

Back

Electromagnets are typically made using a coil of wire and a ferromagnetic core, such as iron.

Front

What is a magnetic field?

Back

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

Front

What are the two poles of a magnet called?

Back

The two poles of a magnet are called the north pole and the south pole.

Front

What happens when like poles of magnets are brought together?

Back

Like poles of magnets repel each other.

Front

What happens when unlike poles of magnets are brought together?

Back

Unlike poles of magnets attract each other.

Front

How does Earth's magnetic field protect us?

Back

Earth's magnetic field protects us from solar winds and cosmic radiation.

Front

Where is the magnetic force strongest on Earth?

Back

The magnetic force is strongest at the poles of the Earth.

Front

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

Back

A permanent magnet produces a constant magnetic field, while an electromagnet's field can be turned on and off.

Front

What is the role of electric current in an electromagnet?

Back

Electric current creates a magnetic field when it flows through a wire.