Uses of Energy

Front

What is thermal energy?

Back

Thermal energy is the energy that comes from the temperature of matter. It is the energy that is generated and measured by heat.

Front

Give an example of thermal energy in use.

Back

A house using heat trapped inside Earth for warmth in winter.

Front

What is mechanical energy?

Back

Mechanical energy is the sum of potential energy and kinetic energy in an object that is used to do work.

Front

What is electrical energy?

Back

Electrical energy is the energy caused by the movement of electrons. It is used to power devices like lights and appliances.

Front

What is an example of an object that uses only mechanical energy?

Back

A wind-up toy that moves when you wind it up.

Front

What is an example of an object that uses only electrical energy?

Back

A toaster that uses electricity to heat and toast bread.

Front

What is an example of an object that uses both mechanical and electrical energy?

Back

A blender that uses electricity to power its blades, which chop and mix food.

Front

What is thermal energy used for in a science lab?

Back

Thermal energy is used to heat substances, such as boiling water on a hot plate.

Front

What is sound energy?

Back

Sound energy is the energy produced by vibrating sound waves. It is used in devices like speakers.

Front

What is an example of an object that uses sound energy?

Back

A guitar that produces sound when its strings vibrate.