Heat Transfer

Question 1 • 25-26 CHEMISTRY IN THE EARTH SYSTEM S1

Which statement best compares conduction, convection, and radiation?

Answer

Convection and radiation transfer thermal energy through matter only, and conduction transfers thermal energy through both matter and empty space.

Radiation and conduction transfer thermal energy through matter only, and convection transfers thermal energy through both matter and empty space.

Convection and conduction transfer thermal energy through matter only, and radiation transfers thermal energy through both matter and empty space.

Conduction, convection, and radiation transfer thermal energy through both matter and empty space.

Explanation

Conduction transfers thermal energy through direct contact between particles, and convection transfers it through the movement of matter, such as a liquid or gas. Both require matter. Radiation travels as electromagnetic waves, so it can transfer thermal energy through matter or through empty space; therefore, choice C is correct.

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Heat Transfer

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