Thermal Energy Transfer Quiz

B had a bowl of ramen for lunch. The soup was so hot he decided to put it in the fridge for a few minutes to cool it. What happened to cool the soup so B could eat it?

• The heat moved from the soup to the cold air in the refrigerator.

• The cold in the refrigerator moved into the hot soup.

• No heat or cold moved out of or into the soup. It just cooled off.

• The soup absorbed heat from the refrigerator.

What does a thermogram show?

• The weight of an object

• The temperature of an object

• The size of an object

• The speed of an object

What happens to the thermal energy of food when it is left out after being heated in a microwave?

• It increases.

• It stays the same.

• It decreases.

• It doubles.

What is a closed system?

• A system that exchanges matter and energy with the environment

• A system that does not exchange matter or energy with the environment

• A system that only exchanges energy with the environment

• A system that only exchanges matter with the environment

What is an open system?

• A system that exchanges matter and energy with the environment

• A system that does not exchange matter or energy with the environment

• A system that only exchanges energy with the environment

• A system that only exchanges matter with the environment

In the context of energy transfer, what is a source object?

• An object that gains energy from the transfer

• An object that loses energy during the transfer

• An object that provides energy for the transfer

• An object that remains unchanged during the transfer

What is a receiver object in energy transfer?

• An object that provides energy for the transfer

• An object that gains energy from the transfer

• An object that loses energy during the transfer

• An object that remains unchanged during the transfer

What is the process called when thermal energy is transferred from a region of higher temperature to a region of lower temperature?

• Conduction

• Radiation

• Heat

• Convection

How can a substance be cooled? Pick the most accurate answer.

• By adding coldness to it

• By transferring energy to a substance of lower temperature

• By increasing its temperature

• By adding heat to it

Answer explanation

A substance can be cooled by transferring energy to a substance of lower temperature, allowing heat to flow away. This is the correct method, as adding coldness or heat would not effectively cool the substance.

In an energy flow diagram, what does the source object do?

• Gains energy

• Loses energy

• Stays the same

• Absorbs energy

Answer explanation

In an energy flow diagram, the source object loses energy as it provides energy to other objects in the system. Therefore, the correct answer is that the source object loses energy.