Picture shows how all the water on Earth would fit into one 860-mile-wide ball, page 1


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Topic started on 8-5-2012 @ 12:12 PM by jazz10
Short but sweet as the picture says it all really. But have they really done the sums properly.
Here is the
link

When people talk about our water supply running out, it's often difficult to imagine - but according to the U.S. government's Geological Survey, all the water on Earth would fit into an 860-mile-wide bubble. Around 70% of Earth's surface IS water-covered - but it's a very, very thin layer. Read more: www.dailymail.co.uk...






reply posted on 8-5-2012 @ 12:27 PM by TheInterceptor
reply to post by Chrisfishenstein



70% of the surface.

I have no way of fact checking this myself and it may all just be a joke, but for all of the people who for some reason will not read the short article attached, it does say it includes ALL water on earth.


reply posted on 8-5-2012 @ 12:28 PM by killianhgore
reply to post by pasiphae



It's true! Scary but true - check out this link to see just how much fresh water we have!

renovatingtherustbelt.wordpress.com...


reply posted on 8-5-2012 @ 12:32 PM by AnonymousCitizen
Did some quick math, and the OP's source seems way off.

Two different source put the water on Earth to be 326 million trillion gallons.
source and source

With 1 cubic mile containing about a trillion gallons, that gives us about 326 million cubic miles, also from source

Using the 860 mile diameter in the OP diagram, we have a radius of 430 miles. Using the formula for the volume of a sphere of V = 4/3 * pi * r^3 give us 106,009,337.5 square miles, well short of the 326 million square miles needed to hold the Earth's water.

In summary, we would need more than 3 of those round balls of water.
edit on 5/8/12 by AnonymousCitizen because: used square instead of cube in formula, doh

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