The crackling noise produced by aluminum roofing sheets on a house during a hot sunny…

The crackling noise produced by aluminum roofing sheets on a house during a hot sunny day is a result of
  • A.
    thermal equilibrium of the sheets
  • B.
    conduction of heat by the sheets
  • C.
    contraction of the sheets
  • D.
    expansion of the sheets
Correct Answer: Option D
Explanation
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