Amplify Thermal Energy Unit REview

Front

What is conduction?

Back

Conduction is the transfer of heat through direct contact between materials. It occurs when molecules collide and transfer energy to each other.

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, creating a circulation pattern.

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, allowing heat to be transferred through empty space.

Front

How does temperature relate to molecular speed?

Back

As the temperature of a substance increases, the average speed of its molecules also increases.

Front

What happens to the temperature of a sample when its molecules speed up?

Back

The temperature of the sample increases.

Front

What type of heat transfer occurs when boiling water?

Back

Convection occurs in boiling water as hot water rises and cooler water sinks.

Front

What is an example of conduction in everyday life?

Back

An example of conduction is when a metal spoon becomes warm after being placed in a hot cup of tea.

Front

What is an example of convection in nature?

Back

An example of convection in nature is the formation of wind, where warm air rises and cool air moves in to replace it.

Front

What is an example of radiation?

Back

An example of radiation is feeling the warmth of the sun on your skin, even when you are not in direct contact with it.

Front

What is the role of molecules in heat transfer?

Back

Molecules play a crucial role in heat transfer by colliding and transferring energy during conduction, moving in fluids during convection, and emitting or absorbing energy during radiation.