Electrical and Heat Energy

Front

What is a conductor?

Back

A conductor is a material through which electrons can easily flow, allowing electricity to pass through. Examples include metals like copper and aluminum.

Front

What is an insulator?

Back

An insulator is a material that does not allow electrons to flow freely, preventing the passage of electricity. Examples include rubber, glass, and plastic.

Front

What is a closed circuit?

Back

A closed circuit is a complete electrical loop that allows current to flow. It has no breaks or gaps.

Front

What is an open circuit?

Back

An open circuit is a broken electrical loop that prevents current from flowing. It can occur due to a break in the circuit or an open switch.

Front

What is conduction?

Back

Conduction is the process of heat transfer through direct contact between materials. For example, when a metal spoon is placed in a hot pot, heat transfers from the pot to the spoon.

Front

What is convection?

Back

Convection is the transfer of heat through the movement of fluids (liquids or gases). For example, warm air rising and cool air sinking creates a convection current.

Front

What is radiation?

Back

Radiation is the transfer of heat in the form of electromagnetic waves, such as sunlight warming the Earth.

Front

What is a battery's role in a circuit?

Back

A battery provides the electrical energy needed to power a circuit. It acts as the energy source.

Front

What happens if a circuit has no energy source?

Back

If a circuit has no energy source, it will not work, and devices like light bulbs will not light up.

Front

What is the function of a switch in a circuit?

Back

A switch controls the flow of electricity in a circuit. It can open (stop the flow) or close (allow the flow) the circuit.