Magnetic Fields Chapter 1

Front

What is a magnetic field?

Back

A magnetic field is a region around a magnet where magnetic forces can be detected. It is represented by field lines that show the direction and strength of the magnetic force.

Front

What is the North Pole of a magnet?

Back

The North Pole of a magnet is the end that points towards the Earth's geographic North when freely suspended. It is attracted to the Earth's magnetic South Pole.

Front

What happens when a north pole and a south pole of magnets are brought together?

Back

They attract each other.

Front

What is the rule for like poles of magnets?

Back

Like poles (north-north or south-south) repel each other.

Front

What is the rule for opposite poles of magnets?

Back

Opposite poles (north-south) attract each other.

Front

What are magnetic field lines?

Back

Magnetic field lines are imaginary lines that represent the strength and direction of a magnetic field. They emerge from the north pole and enter the south pole.

Front

What does it mean if magnetic field lines are close together?

Back

If magnetic field lines are close together, it indicates a strong magnetic field.

Front

What does it mean if magnetic field lines are far apart?

Back

If magnetic field lines are far apart, it indicates a weak magnetic field.

Front

What is the Earth's magnetic field?

Back

The Earth's magnetic field is the magnetic field that extends from the Earth's interior out into space, affecting compass readings and protecting the planet from solar winds.

Front

How does a compass work?

Back

A compass works by using a small magnet (the needle) that aligns itself with the Earth's magnetic field, pointing towards the magnetic North.