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Energy Transfer in Natural Systems

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Match each example to a heat mechanism. Terms may be used more than once.

EXAMPLES:

A. Water is heated on a stove.
B. You feel cold near a closed window.
C. You feel cool air at your feet when you open the refrigerator.
D. A blacksmith dips red-hot steel into a bucket of water to cool it down.

HEAT MECHANISM
I. Conduction
II. Convection
III. Radiation

A = II
B = I
C = II or III?
D = III

  • Energy Transfer in Natural Systems -

    well, congratulations, you got none right. I wont give partial credit on C, as you had one right and one wrong answer.
    convection implies moving air. How does that heat water on a stove. But it might explain the air coming from the refrigerator door.

  • Energy Transfer in Natural Systems -

    A = III
    B = II
    C = II
    D = I

  • Energy Transfer in Natural Systems -

    A could be radiation, but it is usually not. I have seen one infared stove top in my life which heated by radiation, all the rest were conduction from hot gases in the flame to the pot. I think the best answer for the stove top is conduction.

  • Energy Transfer in Natural Systems -

    thanks:)

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