The gas heater gives us heat by __________?
Correct answer: C. Convection
- A. Radiation
- B. Conduction
- C. Convection
- D. Environmental pressure
Explanation
A gas heater warms nearby air, which becomes less dense and rises while cooler air moves down to replace it; this circulation is convection. Radiation also contributes in some heater designs, but convection is the usual textbook answer for a room gas heater.
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