Front

What happens to particles when thermal energy is added to them?

Back

They speed up and spread out.

Front

What type of heat transfer occurs from the sun to the Earth?

Back

Radiation.

Front

If you brought sample A and B close together, in what direction would heat be transferred?

Back

From sample A to sample B.

Front

What is a convection current?

Back

The circular motion of fluid particles when warm particles rise and cold particles sink.

Front

The sun's rays are an example of what type of heat transfer?

Back

Radiation.

Front

What is thermal energy?

Back

The total energy of all the particles in an object.

Front

What is conduction?

Back

The transfer of heat through direct contact between materials.

Front

What is convection?

Back

The transfer of heat through the movement of fluids (liquids and gases).

Front

What is radiation?

Back

The transfer of heat through electromagnetic waves.

Front

How does temperature affect particle movement?

Back

Higher temperature increases particle movement; lower temperature decreases it.