The effect of heatâthe random motion of the atomsâis much stronger than the effect of gravity. Now let's concentrate on a larger group of atoms. Imagine, for example, 50, 100, 1000, even a million atoms, each gravitationally pulling on all the others. The force of gravity is now stronger than before.
Great parts of North Africa and Southern Africa as well as the whole Horn of Africa mainly have a hot desert climate, or a hot semi-arid climate for the wetter locations. The Sahara Desert at the north is the largest hot desert in the world and is one of the hottest, driest and sunniest places on Earth.nly the northernmost and the southernmost fringes of the continent have a Mediterranean climate because they aren't located under the tropics. Because of this geographical situation, Africa is a hot continent as the solar radiation intensity is always high.
Hot and Dry Deserts temperature ranges from 20 to 25Â° C. The extreme maximum temperature for Hot Desert ranges from 43.5 to 49Â° C. Cold Deserts temperature in winter ranges from -2 to 4Â° C and in the summer 21 to 26Â° C a year. The precipitation in Hot and Dry Deserts and the precipitation in Cold Deserts is different. Hot and Dry Deserts usually have very little rainfall and/or concentrated rainfall in short periods between long rainless periods. This averages out to under 15 cm a year.