Thermal Energy Unit Review

Front

What happens to the molecules of a substance when it is heated?

Back

The molecules move faster and spread out.

Front

What type of thermal energy transfer involves the movement of fluids (liquids or gases)?

Back

Convection

Front

What happens to the energy of the molecules in an apple when its temperature decreases?

Back

The energy of the molecules in the apple decreased.

Front

What type of heat transfer occurs when two objects are in direct contact?

Back

Conduction

Front

What is the process called when heat is transferred through electromagnetic waves?

Back

Radiation

Front

What is thermal energy?

Back

The total energy of all the molecules in a substance.

Front

What is conduction?

Back

The transfer of heat through direct contact between materials.

Front

What is convection?

Back

The transfer of heat by the movement of fluids (liquids or gases).

Front

What is radiation?

Back

The transfer of heat through electromagnetic waves without the need for a medium.

Front

How does temperature affect molecular movement?

Back

As temperature increases, molecular movement increases.