Unit 2 Thermal Energy Post-Test Review

Front

What is thermal energy?

Back

Thermal energy is the total kinetic energy of the particles in a substance, which is related to its temperature.

Front

What is insulation?

Back

Insulation is a material that reduces the transfer of heat between objects, helping to keep heat in or out.

Front

What happens to particles in a substance when it is heated?

Back

When a substance is heated, its particles gain energy and move faster.

Front

What is the effect of thickness on insulation performance?

Back

Generally, thicker insulation materials provide better thermal resistance and reduce heat loss more effectively.

Front

What is the freezing point of water?

Back

The freezing point of water is 0°C (32°F).

Front

What is the boiling point of water?

Back

The boiling point of water is 100°C (212°F) at standard atmospheric pressure.

Front

How does heat transfer occur?

Back

Heat transfer occurs through conduction, convection, and radiation.

Front

What is conduction?

Back

Conduction is the transfer of heat through direct contact between materials.

Front

What is convection?

Back

Convection is the transfer of heat through the movement of fluids (liquids or gases).

Front

What is radiation?

Back

Radiation is the transfer of heat in the form of electromagnetic waves, such as infrared radiation.