During which process does heat transfer occur because of density differences__________?
Correct answer: A. Convection
- A. Convection
- B. Radiation
- C. Conduction
- D. None of these
Explanation
Convection transfers heat through the movement of fluids caused by density differences: warmer, less-dense fluid rises while cooler, denser fluid sinks. Conduction does not involve bulk fluid motion.
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