At what pressure does water not freeze?

Question

At the bottom of the ocean, water is below freezing down there, but it will not freeze. My science teacher told me that it was because of the pressure of the ocean. My question is, what is the pressure where water will not freeze?

Answer 1

There is no pressure where water will not freeze...



Your science teacher is wrong...



Sea water freezes below zero degrees C because it has salt dissolved in it...



If the water at the bottom of the sea got colder - it would freeze...



http://en.wikipedia.org/wiki/Triple_point

Answer 2

Look at the phase diagrams in the reference. There is no pressure which will prevent water from freezing. In a vacuum, water freezes around -60 degrees C. At pressures around 200MPa, water freezes around -22 degrees C. Sea water freezes around -2 degrees C, and most deep ocean water is around +2 degrees C. The overall earth temperature would need to drop at least 8-10 degrees C for oceans to begin to freeze anywhere other than at the poles. Extrapolating from the geologic temperature record, I think this could happen in around 20 million years.

Answer 3

It is not pressure but heat that prevents water from not freezing. Heat by convection in water takes a long time to be lost and underwater thermal vents keep on adding more heat as well as warm gulf streams from the tropics.



To find out the depth, measure the depth of the ice at the north pole and under the Antarctic ice shelf. I don't have the desire to research that at the moment.

Answer 4

If all holds authentic, then the freezing element would be decrease. using fact, The boiling area of water decrease than stress (like a radiator in a vehicle) is larger, so conversely the freezing element would desire to be decrease decrease than stress.

Answer 5

Salt water doesn't freeze. Not until you get well below zero F.