Thermal Energy Transfer Quiz

What is conduction?

• The transfer of heat or electricity through a substance without any apparent movement of the substance itself.

• The transfer of heat or electricity through a substance by the emission of the substance.

• The transfer of heat or electricity through a substance by the movement of the substance itself.

• The transfer of heat or electricity through a substance by the absorption of the substance.

Answer explanation

Conduction is the transfer of heat or electricity through a substance without any apparent movement of the substance itself. This is the correct choice.

Which of the following is an example of conduction?

• Jumping on a trampoline

• Blowing a balloon

• Swimming in a pool

• Touching a hot pan

Answer explanation

Conduction is the transfer of heat through direct contact. Touching a hot pan is an example of conduction because heat is transferred from the pan to your hand through direct contact.

What is convection?

• The process of heat transfer through the movement of a fluid caused by differences in temperature.

• The process of heat transfer through the movement of a fluid caused by differences in density.

• The process of heat transfer through the movement of a gas caused by differences in pressure.

• The process of heat transfer through the movement of a solid caused by differences in temperature.

Answer explanation

Convection is the process of heat transfer through the movement of a fluid due to temperature differences.

Which of the following is an example of convection?

• Melting ice in a glass

• Lightning during a thunderstorm

• Boiling water in a pot

• Baking cookies in an oven

Answer explanation

Convection is the transfer of heat through the movement of a fluid. Boiling water in a pot is an example of convection because the hot water rises and the cooler water sinks, creating a circular flow of heat.

What is radiation?

• Radiation is the absorption of energy by electromagnetic waves or subatomic particles.

• Radiation is the emission of energy as electromagnetic waves or as moving subatomic particles.

• Radiation is the process of converting matter into energy.

• Radiation is the release of gas from a radioactive substance.

Answer explanation

Radiation is the emission of energy as electromagnetic waves or as moving subatomic particles.

Which of the following is an example of radiation?

• Wind blowing through a window

• A person running on a treadmill

• Energy emitted by the sun

• Water boiling in a pot

Answer explanation

Radiation refers to the energy emitted by the sun.

What is heat transfer?

• The transfer of electrical energy from one object to another

• The transfer of light energy from one object to another

• The transfer of mechanical energy from one object to another

• The transfer of thermal energy from one object or substance to another due to a difference in temperature.

Answer explanation

Heat transfer is the transfer of thermal energy from one object or substance to another due to a temperature difference.

Which of the following is an example of heat transfer?

• A plant growing in sunlight

• A car moving on a highway

• A person breathing in oxygen

• A hot cup of coffee cooling down

Answer explanation

Heat transfer occurs when a hot cup of coffee cools down.

What are thermal insulators?

• Materials that conduct heat well and are used to increase the transfer of heat.

• Materials that are used to generate heat.

• Materials that are used to insulate sound.

• Materials that do not conduct heat well and are used to reduce the transfer of heat.

Answer explanation

Thermal insulators are materials that do not conduct heat well and are used to reduce the transfer of heat.

Which of the following is an example of a thermal insulator?

• foam

• metal

• glass

• concrete

Answer explanation

Foam is an example of a thermal insulator because it has low thermal conductivity, preventing the transfer of heat.