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.
The average temperature of the hot desert ranges from 20 to 25Â° C, but its extreme maximum temperature ranges from 43.5 to 49Â° C. As an example the Sahara desert's night temperatures during the winter months can drop to -5 ÂºC and some ares can even experience frost.he average temperatures of the cold desert in winter ranges from -2 to 4Â° C, whilst in the summer it ranges from 21 to 26Â° C. Taking Antarctica (the most extreme cold desert) as an example, its lowestt temperature was â89.2 Â°C and its highest temperature was14.6Â°C.