Qwizdom questions for Dec. 2, 2009. 6.The process whereby heat flows by the mass movement of molecules from one place to another is referred to as A.

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Qwizdom questions for Dec. 2, 2009

6.The process whereby heat flows by the mass movement of molecules from one place to another is referred to as A. conduction B. convection C. radiation D. inversion

6. The correct answer is B, convection.

7.If you double the thickness of a wall built from a homogeneous material, the rate of heat loss for a given temperature difference across the wall thickness will A. become one-half its original value B.double C.become one-fourth its original value D. stay the same

7. The answer is A, the rate of heat loss will be ½ its original value. Recall:

8.Considering the insulating characteristic of the wall, how will the R-value (thermal resistance) change if the thickness doubles? A. become one-half its original value B. double C. become one-fourth its original value D. stay the same

8. The answer is B. R will double because

9.The process shown on the graph is A.isobaric B.isometric C.isothermal D.adiabatic

9. The correct answer is C. The temperature is constant so the process is isothermal.

10. A gas is quickly compressed in an isolated environment. During the event, the gas exchanged no heat with its surroundings. This process is A. isothermal B. isometric C. isobaric D. adiabatic

10. The correct answer is D, adiabatic, because Q = 0. Recall the video that was shown on Monday.

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