Magnetic Fields

Front

What is a magnetic field?

Back

A magnetic field is a region around a magnetic material or a moving electric charge within which the force of magnetism acts.

Front

What are magnetic field lines?

Back

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

Front

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

Back

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

Front

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

Back

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

Front

What is the direction of magnetic field lines?

Back

Magnetic field lines point from the north pole to the south pole of a magnet.

Front

What happens when two like poles of magnets are brought close together?

Back

Two like poles (north-north or south-south) repel each other.

Front

What happens when two opposite poles of magnets are brought close together?

Back

Two opposite poles (north-south) attract each other.

Front

What is the Earth's magnetic field?

Back

The Earth's magnetic field is a magnetic field that extends from the Earth's interior out into space, where it interacts with solar wind.

Front

What is the significance of the Earth's magnetic field?

Back

The Earth's magnetic field protects the planet from solar wind and cosmic radiation.

Front

What is magnetic force?

Back

Magnetic force is the attraction or repulsion that arises between charged particles due to their motion.