Thermal Energy Review

Front

What is conduction?

Back

Conduction is the transfer of heat through direct contact between materials. It occurs when particles collide and transfer energy.

Front

What is convection?

Back

Convection is the transfer of heat through the movement of fluids (liquids or gases). Warmer, less dense fluid rises while cooler, denser fluid sinks.

Front

What is radiation?

Back

Radiation is the transfer of heat in the form of electromagnetic waves. It does not require a medium to travel through.

Front

Why is metal a good conductor of heat?

Back

Metal is a good conductor because its particles are close to each other, allowing energy to transfer quickly.

Front

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

Back

When a substance is heated, its particles gain energy, move faster, and generally get further apart.

Front

What is thermal energy?

Back

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

Front

What is the difference between a conductor and an insulator?

Back

A conductor allows heat to flow easily (e.g., metals), while an insulator resists heat flow (e.g., wood, plastic).

Front

What is an example of heat transfer by convection?

Back

An example of convection is boiling water, where hot water rises and cooler water sinks.

Front

What is an example of heat transfer by conduction?

Back

An example of conduction is touching a hot stove, where heat transfers directly to your hand.

Front

What is an example of heat transfer by radiation?

Back

An example of radiation is feeling the warmth of the sun on your skin.