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 do the lines in a magnetic field represent?

Back

The lines in a magnetic field represent the direction and strength of the magnetic force. The closer the lines are, the stronger the magnetic field.

Front

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

Back

They repel each other.

Front

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

Back

They attract each other.

Front

What is the rule for determining the direction of magnetic field lines?

Back

Magnetic field lines emerge from the north pole of a magnet and enter the south pole.

Front

What is the significance of the density of magnetic field lines?

Back

The density of magnetic field lines indicates the strength of the magnetic field; denser lines mean a stronger field.

Front

What is the term for the area around a magnet where magnetic forces are felt?

Back

Magnetic field.

Front

What is the difference between permanent magnets and temporary magnets?

Back

Permanent magnets maintain their magnetism over time, while temporary magnets only exhibit magnetic properties when in a magnetic field.

Front

What is a magnetic pole?

Back

A magnetic pole is one of the two ends of a magnet where the magnetic force is strongest; every magnet has a north and a south pole.

Front

What is the effect of distance on magnetic force?

Back

The magnetic force decreases with increasing distance between the magnets.