Physics, asked by renuyashodhank, 6 months ago

What happens if water does not sink in to the ground

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Answered by CloseEncounter
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What happens if water does not sink in to the ground

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Some water is introduced into mantle at subduction zones and the mid oceanic rifts where the seafloor spreading occurs. The amount of water lost is not as much as you might intuit. The density of the mantle is greater than the density of the ocean water, so just like oil tends to float on top of water, water tends to float on top of the mantle. Water vapor is released back into the atmosphere by volcanoes. Without volcanoes, water lost into the mantle would stay there forever. The processes of water entering the mantle and being released by volcanoes reaches an equilibrium. Eventually, earth's geological processes will slow down, and less water vapor will be re-released into the atmosphere by volcanoes, altering the equilibrium. Our sun will also increase in luminosity and will begin to boil away our oceans. In about 1.5 billion years, the earth's oceans may be completely gone.

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