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and another thing!

Where is the driest place on earth?

Antarctica. Parts of the continent have seen no rain for 2 million years.
A desert is technically defined as a place that receives less than 254mm (10 inches) of rain a year.
The Sahara gets just 25mm (1 inch) of rain a year.
Antarctica's average annual rainfall is about the same, but 2 per cent of it, known as the Dry Valley's, is free of ice and snow and it never rains there at all.
The next-driest place in the world is the Atacama Desert in Chile. In some areas, no rain has fallen there for 400 years and its average annual rainfall is a tiny 0.1mm (0.004 inches).
Taken as a whole, this makes it the world's driest desert, 250 times as dry as the Sahara.
As well as the driest place on earth, Antarctica can also claim to be the wetest and the windiest. Seventy per cent of the world's water is found there in the forms of ice, and its wind speeds are the fastest ever recorded.
The unique conditions in the Dry Valleys of Antarctica are caused by so-called katabatic winds (from the Greek word for 'going down'). These occur when cold, dense air is pulled downhill simply by the force of gravity. The winds can reach speeds of 320 kph (200 mph) evaporating all moisture - water, ice and snow - in the process.
Through Antarctica is a desert, these completely dry parts of it are called, somewhat ironically, oases. They are so similar to conditions on Mars that NASA used them to test the Viking Mission.


So there! :p

Comments

( 7 ppl left us a comment! — Wanna leave a comment? )
kiwitart
Jan. 25th, 2007 09:15 am (UTC)
are you just cut and pasting from wikapedia?
paul_n_deb
Jan. 25th, 2007 03:51 pm (UTC)
its probably something he just learnt from his GI book
kiwitart
Jan. 25th, 2007 05:04 pm (UTC)
GI JOE
paul_n_deb
Jan. 25th, 2007 08:13 pm (UTC)
they all are directly from it
paul_n_deb
Jan. 25th, 2007 08:13 pm (UTC)
no i'm not
kiwitart
Jan. 26th, 2007 09:32 am (UTC)
ok good
nuddyhe
Jul. 22nd, 2012 05:31 pm (UTC)
Re:
( 7 ppl left us a comment! — Wanna leave a comment? )

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