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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?
A
Heat energy is transferred from the Earth's surface to the upper atmosphere.
B
Heat energy is transferred from the Sun to the Earth.
C
Heat energy is transferred from the surface soil to the rocks below.
D
Heat energy is transferred from the bottom to the top of a lake.
2) Conduction is the transfer of heat energy by
A
molecular contact
B
density differences
C
movement through a vacuum
D
electromagnetic waves
3) The collision of molecules within a substance results in the transfer of energy by
A
insolation
B
conduction
C
radiation
D
convection
4) During which process of energy exchange does cold air displace warmer air?
A
convection
B
radiation
C
absorption
D
conduction
5) The process by which air flows from one location in the atmosphere to another is called
A
conduction
B
convection
C
radiation
D
absorption
6) During which process does heat transfer occur because of density differences?
A
reflection
B
convection
C
conduction
D
radiation
7) What method of energy transfer requires no medium for transfer?
A
advection
B
convection
C
radiation
D
conduction
8) Which action would help an air-conditioner use less energy on a hot, sunny summer day?
A
replacing light-colored roofing materials with dark-colored ones
B
turning on lights and heat-producing appliances
C
opening draperies and blinds
D
adding insulation in the walls and ceiling
9) In general, good absorbers of electromagnetic radiation are also good
A
reflectors
B
refractors
C
convectors
D
radiators
10) By which process do light rays pass through
A
conduction
B
convection
C
compression
D
radiation
*select an answer for all questions
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