In an adiabatic compression of a gas
- A. the temperature of the gas rises because work is done on it with no heat escaping
- B. the temperature falls
- C. the temperature stays constant
- D. heat flows into the gas from outside
Explanation
With no heat exchange, the work done on the gas must all go into internal energy, so the temperature rises, which is why a bicycle pump warms up when used quickly. Rapid compression is effectively adiabatic because there is no time for heat to escape. The reverse, adiabatic expansion, cools a gas, and that is how clouds form as air rises.