Heat Energy Transfers

Which particles have the highest temperature?

• A

• B

• C

What physical quantity is a measure of the average kinetic energy of particles in a substance?

• Temperature

• Heat

• Convection

Which physical quantity is equal to the total sum of kinetic energy of all particles in a substance?

• Temperature

• Heat

• Conduction

Which mode of heat transfer is shown in this example?

• Conduction

• Convection

• Radiation

Which mode of heat energy transfer is shown in this example?

• Conduction

• Convection

• Radiation

Which mode of heat energy transfer is shown in this example?

• Conduction

• Convection

• Radiation

Do we need to supply high heat for evaporation of water to happen?

• Yes, since evaporation cannot occur without significant heating.

• No, because additional heating does not affect evaporation at all.

• No, since evaporation will occur at room temperature anyway (but heating will speed up the process).

Another name for heat energy is:

• kinetic energy.

• spring energy.

• thermal energy.

• mechanical energy.

What are the units for measuring heat energy?

• newtons

• degrees Celsius

• joules

• degrees Fahrenheit

If you leave a cup of hot tea standing in the kitchen for a whole day, what will happen to its temperature?

• It will stay the same

• It will get only a little bit cooler.

• It will end up the same temperature as the air in the kitchen.

• It will be colder than the air in the kitchen