PS3-3 Thermal Energy

Front

What is thermal energy?

Back

Thermal energy is the total energy of all the particles in an object, which is related to its temperature.

Front

What is the best conductor of heat?

Back

Metal is the best conductor of heat.

Front

What type of heat transfer occurs when the sun warms the sand?

Back

Radiation is the type of heat transfer that occurs when the sun warms the sand.

Front

What is conduction?

Back

Conduction is the transfer of thermal energy through direct contact between materials.

Front

What is convection?

Back

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

Front

What is radiation?

Back

Radiation is the transfer of thermal energy through space without the need for a medium.

Front

How does the number of molecules affect thermal energy?

Back

The total thermal energy is higher when there are more molecules, even if their temperature is lower.

Front

What happens to air in a hot air balloon?

Back

The air inside the hot air balloon becomes less dense and rises due to convection.

Front

What is an example of conduction?

Back

An example of conduction is touching a hot stove and feeling the heat transfer to your hand.

Front

What is an example of convection?

Back

An example of convection is the warm air rising and cool air sinking in a room.