Thermal Energy

Front

What is thermal energy?

Back

Thermal energy is the energy that comes from the movement of molecules in a substance. The faster the molecules move, the more thermal energy they have.

Front

What is a conductor?

Back

A conductor is a material that allows thermal energy (heat) to pass through it easily. Examples include metals like steel and copper.

Front

What is an insulator?

Back

An insulator is a material that does not allow thermal energy to pass through it easily. Examples include wood, plastic, and rubber.

Front

What is geothermal energy?

Back

Geothermal energy is the heat that comes from inside the Earth. It can be used for heating and electricity.

Front

Which of the following is not a source of thermal energy?

Back

Sound energy is not a source of thermal energy.

Front

Do cold objects have thermal energy?

Back

False. Cold objects still have thermal energy, but less than warmer objects.

Front

What happens to molecules when they are heated?

Back

When molecules are heated, they move faster and spread apart, increasing the thermal energy of the substance.

Front

What is the relationship between temperature and thermal energy?

Back

Temperature is a measure of how hot or cold something is, which relates to the average kinetic energy of its molecules.

Front

What is an example of a good thermal conductor?

Back

A good thermal conductor is steel, which allows heat to pass through it quickly.

Front

What is an example of a good thermal insulator?

Back

A good thermal insulator is plastic, which does not allow heat to pass through easily.