To what degree is water compressible? Does the density of water change with depth? By how much?

Question

I was taught that water is incompressible and that its density does not change with depth. Is this true? Is the density of water at the bottom of the Marianas trench (10920 meters deep) significantly different than that at the surface? I am asking specifically about water in the liquid state, not ice or water vapor.

Answer 1

Wats er is compressible. The weight of the ocean excerts massive pressure the deeper you go. Enough to crush steel at 10K feet.

Answer 2

The low compressibility of water means that even in the deep oceans at 4000 m depth, where pressures are 4×107 Pa, there is only a 1.8% decrease in volume.

Answer 3

Yes, it's true - water density hardly changes with pressure. For most practical calculations, you can assume that water density is only a function of temperature and dissolved substances (if any). Water density is highest at 4°C. If the ocean floor has no heat sources, such as hot vents or volcanoes, the densest water will collect at the bottom. In fact, much of the deep ocean water is at 4°C.

Answer 4

i thought density was a property of a substance so it cant change

Answer 5

You are my density, bro.

Answer 6

water is an incompressible fluid.  that's why it's better to fall on dirt than water if your parachute fails.