Which of the following statements about convection is true? Hot material becomes less dense, flows upward and displaces more-dense cool material. Cool material becomes more dense, flows upward and displaces less-dense hot material. In convection, circulation occurs but is random. Heat is transferred from hot material to cool material without inducing a flow.

Elements Of Electromagnetics
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Which of the following statements about convection is true?
Hot material becomes less dense, flows upward and displaces more-dense cool material.
Cool material becomes more dense, flows upward and displaces less-dense hot material.
In convection, circulation occurs but is random.
Heat is transferred from hot material to cool material without inducing a flow.
Transcribed Image Text:Which of the following statements about convection is true? Hot material becomes less dense, flows upward and displaces more-dense cool material. Cool material becomes more dense, flows upward and displaces less-dense hot material. In convection, circulation occurs but is random. Heat is transferred from hot material to cool material without inducing a flow.
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