When air expands or contracts, what type of temperature change does it experience? radiation , volume , external , adiabatic

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❖ The correct answer choice is D. adiabatic.

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Option D, Adiabatic

Explanation:

Adiabatic temperature changes when the change is caused by gain or loss of external heat or gain or loss of any physical entity that brings in the change in temperature.  

Here in this case when the gas expands air molecules get more space and the density reduced thereby reducing the pressure. As the pressure reduces the temperature also reduces. Likewise, when the gas contracts, its volume and density decreases thereby increasing the pressure and hence the temperature

Hence, option D is correct

correct answer is option a.

tropopause, stratopause and mesopause have all in common aspect that is point of maximum temperature in its layer of the atmosphere. all layers of atmosphere observe abrupt change in temperature. tropopause is the boundary between troposphere and stratosphere. stratopause is the boundary between stratosphere and mesosphere. mesopause is the boundary between mesosphere and thermosphere. these all boundaries are ranges between altitude of 0 to 80 km.

well the answer is 2!