Estimate the mass of water on the earth. The density of water is 1000kg cubic meter. Give answer to 1 significant figure. There are some approximations that can be use:
compared with the oceans, lakes and rivers are tiny. Clouds have very low density. There is (still) lots of ice in the the polar regions , but much less area which covers roughly 2/3 of the earth. Looking at the charts of the oceans , we see that the depth is typically several thousand meters (and a serious search tells me the average depth is 4700m) .The radius of the earth is about 6000km .The surface area of a sphere is 4piR².
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Estimate the mass of water on the earth. The density of water is 1000kg cubic meter. Give answer to...
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