Electricity and Energy Transformations Review

Front

What is a closed circuit?

Back

A closed circuit is a complete electrical circuit through which current can flow without interruption.

Front

What is an open circuit?

Back

An open circuit is a broken circuit where the current cannot flow due to a gap or break in the path.

Front

What is electrical energy?

Back

Electrical energy is the energy caused by the movement of electrons through a conductor.

Front

What is radiant energy?

Back

Radiant energy is the energy of electromagnetic waves, including visible light, which can be emitted by sources like the sun or light bulbs.

Front

What causes lightning?

Back

Lightning is caused by electrical charges in storm clouds, resulting from static electricity.

Front

What is an electromagnet?

Back

An electromagnet is a type of magnet in which the magnetic field is produced by an electric current.

Front

How does the number of coils affect the strength of an electromagnet?

Back

The strength of an electromagnet increases with the number of coils; more coils create a stronger magnetic field.

Front

What is the principle of energy transformation?

Back

The principle of energy transformation states that energy can change from one form to another, such as electrical energy transforming into radiant energy.

Front

What is static electricity?

Back

Static electricity is the accumulation of electric charge on the surface of objects, which can cause sparks or lightning.

Front

What is the role of a switch in a circuit?

Back

A switch controls the flow of electricity in a circuit, allowing it to be opened (off) or closed (on).