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Conduction, Convection And Radiation

Test Description: Differences between the various methods of heat transfer (conduction, convection and radiation).

Instructions: Answer all questions to get your test result.

1) Which statement is the best example of heat energy transfer by conduction?

AHeat energy is transferred from the bottom to the top of a lake. BHeat energy is transferred from the Earth's surface to the upper atmosphere. CHeat energy is transferred from the Sun to the Earth. DHeat energy is transferred from the surface soil to the rocks below.

2) Conduction is the transfer of heat energy by

Adensity differences Bmolecular contact Cmovement through a vacuum Delectromagnetic waves

3) The collision of molecules within a substance results in the transfer of energy by

Aconvection Bradiation Cconduction Dinsolation

4) During which process of energy exchange does cold air displace warmer air?

Aconduction Babsorption Cradiation Dconvection

5) The process by which air flows from one location in the atmosphere to another is called

Aconvection Babsorption Cconduction Dradiation

6) During which process does heat transfer occur because of density differences?

Aconduction Bradiation Creflection Dconvection

7) What method of energy transfer requires no medium for transfer?

Aconduction Badvection Cconvection Dradiation

8) Which action would help an air-conditioner use less energy on a hot, sunny summer day?

Areplacing light-colored roofing materials with dark-colored ones Bturning on lights and heat-producing appliances Cadding insulation in the walls and ceiling Dopening draperies and blinds

9) In general, good absorbers of electromagnetic radiation are also good

Areflectors Brefractors Cradiators Dconvectors

10) By which process do light rays pass through

Aconvection Bconduction Cradiation Dcompression

*select an answer for all questions

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