Magnets & Magnetic Fields

Front

What is the Earth's magnetic field primarily caused by?

Back

The movement of molten iron in the Earth’s core.

Front

What is an electromagnet?

Back

A magnet created by the flow of electrical current.

Front

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

Back

Electromagnets can be turned on and off.

Front

What surrounds massive objects and is a characteristic of a gravitational field?

Back

It surrounds massive objects.

Front

How are magnetic fields represented?

Back

By field lines showing direction and strength.

Front

What is a permanent magnet?

Back

A magnet that maintains its magnetic properties without the need for an external power source.

Front

What is the role of magnetic field lines?

Back

They indicate the direction and strength of a magnetic field.

Front

What happens when you break a magnet in half?

Back

You create two smaller magnets, each with a north and south pole.

Front

What is the unit of measurement for magnetic field strength?

Back

Tesla (T).

Front

What is the right-hand rule in magnetism?

Back

A method to determine the direction of the magnetic force, current, and magnetic field.