Naked Science Forum

Life Sciences => Plant Sciences, Zoology & Evolution => Topic started by: neilep on 07/05/2007 23:33:16

Title: Water Of The Earth.....Is it Constant or Changing in Quantity ?
Post by: neilep on 07/05/2007 23:33:16

Hello,

(Small Talk Mode).....How are you ?..I'm fine  !..a bit tired..hope you're well !!



Is the amount of water in/on the Earth changing in quantity at all ?

At one point there was none yes ?...now we have icy places...liquidy places and gassy places too !!

Does any evaporate out to space ?...if so ...is there a mechanism which replaces it ?

whajafink ?

Title: Water Of The Earth.....Is it Constant or Changing in Quantity ?
Post by: DrDick on 08/05/2007 02:50:30

This is actually more of a planetary science/astronomy question.  I believe that most of the water came from outer space, in the form of meteors and comets.

Dick

Title: Water Of The Earth.....Is it Constant or Changing in Quantity ?
Post by: JimBob on 08/05/2007 03:44:25

Correctamundo, Dr.D. - There are enough icy meteorites falling into (or hitting, however you wish to word it) to raise sea level about an inch a year.

I know I read this on the NASA site (100% sure)and I think I also recall a reference to it in an article on the rates of sediment formation in (I think) the Journal of Sedimentary Petrology (10-15% sure)??? but my memory is full of holes.

Title: Water Of The Earth.....Is it Constant or Changing in Quantity ?
Post by: Karen W. on 11/05/2007 06:49:46

So are you asking, when it evaporates here does it go further up into the atmosphere then just the clouds?