Water compression

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Offline dentstudent

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Water compression
« on: 24/05/2007 15:09:51 »
If you brought up a cubic metre of sea water from the bottom of the Mariana Trench, by how much would it expand at the surface?

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Offline daveshorts

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Water compression
« Reply #1 on: 24/05/2007 16:39:10 »
About 3-4% according to a rough extrapolation from compressibility figures in Wikipedia

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Offline dentstudent

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Water compression
« Reply #2 on: 25/05/2007 10:03:14 »
Thanks! It's not much is it, considering the hundreds of atmospheres of pressure at that depth.

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Offline Batroost

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Water compression
« Reply #3 on: 25/05/2007 22:19:11 »
Quote
Thanks! It's not much is it, considering the hundreds of atmospheres of pressure at that depth.

No it isn't. But water responds far more to temperature. Even under 155 atmospheres of pressure water at 300 degrees C (~45 degrees from boiling) has a relative density of only about 75% of that of water at room temperature and pressure.
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