Noncontact Forces (Magnetism) Unit Test Review

Front

What is a magnetic field?

Back

A magnetic field is a field of force produced by moving electric charges.

Front

What are noncontact forces?

Back

Noncontact forces are forces that act on an object without physical contact, such as magnetism and gravity.

Front

What is an example of a noncontact force?

Back

A paper clip moving toward a magnet is an example of a noncontact force.

Front

How many poles does a magnet have?

Back

A magnet has 2 poles: a north pole and a south pole.

Front

What is the magnetic field around a bar magnet?

Back

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

Front

What does it mean to step up voltage in a transformer?

Back

To step up voltage means to increase the voltage from the primary coil to the secondary coil.

Front

What does it mean to step down voltage in a transformer?

Back

To step down voltage means to decrease the voltage from the primary coil to the secondary coil.

Front

What is the role of electric charges in magnetism?

Back

Moving electric charges create magnetic fields, which are fundamental to magnetism.

Front

What happens when a magnet is cut in half?

Back

When a magnet is cut in half, each half becomes a new magnet with its own north and south poles.

Front

What is the direction of magnetic field lines?

Back

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