Lab: Thermal Energy Transfer

Question 1

Which series represents the flow of thermal energy in a home with a refrigeration cooling system?

Revolt · Accepted Answer

Inside air → coolant in cooling system → outside air

Question 2

What did you include in your response? Check all that apply.

Revolt · Accepted Answer

The energy from fuel can only be used when it is in the form of thermal energy.; Burning a substance converts chemical energy into thermal energy.

Question 3

What is the best explanation for why the room with the heat pump was cooler than the rest of the house?

Revolt · Accepted Answer

Thermal energy from the air surrounding the water heater was transferred to the water.

Question 4

How do furnace heating systems typically work?

Revolt · Accepted Answer

Energy in the fuel’s chemical bonds is converted to thermal energy, which is then transferred to the air inside the building.

Question 5

Why is combustion of fuel necessary for heat engines to do work?

Revolt · Accepted Answer

Combustion is necessary to provide the heat energy required to generate the pressure difference that allows the engine to perform mechanical work.

Question 6

In a thermostat, what property of the bimetallic coil allows it to contract and expand?

Revolt · Accepted Answer

The two metals absorb different amounts of thermal energy.

Question 7

Which energy sources can transfer thermal energy to a heat pump? Check all that apply.airthe groundwatergas fuelwood fuel

Revolt · Accepted Answer

air; the ground; water

Question 8

Which statement describes refrigeration systems?

Revolt · Accepted Answer

Refrigeration systems move the thermal energy from the building to another place.

Question 9

What do heating systems, cooling systems, and heat engines have in common?

Revolt · Accepted Answer

They transfer thermal energy.

Lab: Thermal Energy Transfer Answers