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2007-05-24 23:06:17 · 9 answers · asked by Anonymous in Science & Mathematics Weather

9 answers

Nothing about 'deserts' make the 'weather' hot....THE SUN makes the weather and the deserts hot!

2007-05-30 07:47:46 · answer #1 · answered by YouGotMe 3 · 0 0

A desert is defined as an area with exceptionally low precipitation so it's more a case that deserts are dry rather than hot. Antractica for example is a desert.

Because deserts are dry there is little cooling effect from rainfall and there is little vegetation. Also because they're dry there's little evapouration so little cloud cover. This gives rise to long sunny days where much of the heat is absorbed by the desert. So it's a lack of rainfall, lack of shade, lack of vegetation and absorbtion of heat that makes the deserts hot.

But, this only happens during the day. By night deserts are often very cold places, even the Sahara gets cold in places at night - mainly because the skies are so clear that all the heat radiates back into space.

2007-05-25 02:56:09 · answer #2 · answered by Trevor 7 · 2 0

Some deserts are not hot, but very cold. There are areas where it is difficult for clouds to travel to. Sometimes they move in from the sea but can't get over a mountain pass. The land on the other side of the mountains get dry, making plant-life scarce. The barren, dry land, in effect, is what defines a desert.
What makes some deserts hot is the lack of plants, due to the lack of rain. The sun beams hits the ground directly, making it very hot. In places where there's plants, the sun beams go through the plants first, cooling down with the insulation of the moisture of the plants.

2007-05-25 05:51:14 · answer #3 · answered by thezaylady 7 · 0 0

This is because the air is very dry (contains little moisture). Dry air is transparent to infrared (heat) radiation from both the sun and the ground. Thus during daylight all of the sun's heat reaches the ground. As soon as the sun sets the desert cools quickly by radiating its heat into space. Clouds reflect ground radiation and desert skies are usually cloudless again increasing the release of heat at night.

2007-05-29 17:32:12 · answer #4 · answered by BMW 2 · 0 0

The sun shines on the sand which reflects the heat upwards to any person walking around so the sun is hitting you at two angles, there is not much rain to cool the deserts down either.

This is why camels have long thin legs so that the majority of their body mass can be above the hottest air (about a metre abouve the sand) so they can be cooler!

2007-05-24 23:11:44 · answer #5 · answered by Anonymous · 2 1

Nothing. Deserts are places with little to no rainfall or moisture precipitation. Antarctica is a desert.

2007-05-30 12:19:35 · answer #6 · answered by dungeonmistermisty 3 · 0 0

It is rather the other way around.
It is so hot that the place turns into a desert.

2007-05-24 23:11:53 · answer #7 · answered by Anonymous · 1 0

hot

2007-05-25 03:32:57 · answer #8 · answered by jason 4 · 0 0

Water is what cools off the air, there are no water ind eserts.

2007-05-24 23:12:21 · answer #9 · answered by Anonymous · 1 0

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