Скачать или смотреть WHY MOUNTAINS ARE COLDER THAN PLAINS?

But because the higher you get, the lesser the atmospheric pressure is, that rising air cools down by the so-called adiabatic effect. This is the same thermodynamic principle that cools down your fridge when a compressed coolant is released through a nozzle.Therefore the higher you get, the colder it is. At the altitude an airliner flies, the outside temperature is around -50 C (-58 F).If you ever see fog down in a valley, you'll know that this is what happened. Because colder air probably mixed with moist air (lakes and rivers are usually down in valleys) is what is needed to form fog. And since the air above is warmer, it forms what is called an inversion: Cold air under warm one. And nothing moves ... until the sun, again, warms up the ground during the day.