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Thu Mar 22, 2012, 01:11 PM

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This message was self-deleted by its author (polly7) on Fri Sep 5, 2014, 03:21 PM. When the original post in a discussion thread is self-deleted, the entire discussion thread is automatically locked so new replies cannot be posted.

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Reply This message was self-deleted by its author (Original post)
polly7 Mar 2012 OP
Richardo Mar 2012 #1
polly7 Mar 2012 #2

Response to polly7 (Original post)

Thu Mar 22, 2012, 02:20 PM

1. How much water is on Earth?



In this illustration, the blue ball represents the volume of all the water on earth, relative to the size of the earth. The tiny speck to the right of the blue ball represents Earth's fresh water.CREDIT: David Gallo/WHOI


If Earth was the size of a basketball, all of its water would fit into a ping pong ball.

<snip>

Oceans create a water layer spanning 15,000 miles (24,000 kilometers) across the planet at an average depth of more than 2 miles (3.2 km). If you poured all of the world's water on the United States and could contain it, you'd create a lake 90 miles (145 km) deep.

This seems, and looks, like a lot of water, Gallo told Life's Little Mysteries, but looks can be deceiving.

If the Earth was an apple, Gallo said, the water layer would be thinner than the fruit's skin.

The Earth's freshwater is even rarer.

<snip>


More at: http://www.lifeslittlemysteries.com/829-how-much-water-on-earth-100909html.html

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Response to Richardo (Reply #1)

Thu Mar 22, 2012, 02:33 PM

2. That's a very sobering article.

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