8.3 Lesson Set 1 Review Flashcard

Front

What is a magnetic field?

Back

A magnetic field is an invisible field around a magnet where magnetic forces can be felt. It is created by moving electric charges or by magnets.

Front

What happens when a coil of wire is connected to a battery?

Back

The coil creates a magnetic field due to the electric current flowing through it.

Front

How can you tell if a coil of wire creates a magnetic field?

Back

You can tell if a coil creates a magnetic field if it attracts or repels a nearby magnet.

Front

What is kinetic energy?

Back

Kinetic energy is the energy an object has due to its motion.

Front

How can you observe changes in kinetic energy in a magnet and coil system?

Back

You can observe changes in kinetic energy by watching for any movement of the coil or magnet.

Front

What does it mean if a compass needle moves near a current-carrying coil?

Back

It means that the coil has produced a magnetic field.

Front

What is the difference between attractive and repulsive magnetic fields?

Back

Attractive magnetic fields draw magnets together, while repulsive magnetic fields push them apart.

Front

What is the role of electric current in creating a magnetic field?

Back

Electric current flowing through a wire generates a magnetic field around the wire.

Front

What is an electromagnet?

Back

An electromagnet is a type of magnet that is created by electric current. It can be turned on and off.

Front

What is the relationship between electricity and magnetism?

Back

Electricity and magnetism are interconnected; electric currents create magnetic fields, and changing magnetic fields can induce electric currents.