# Temperature and volume relationship water

### thermodynamics - Water pressure vs temperature - Physics Stack Exchange

Is it true that as the earth heats up the oceans could potentially heat up The ( positive) change in volume when water freezes doesn't have a. Water boils at °F at the atmospheric pressure of psia, at 80°F under a The pressure-temperature-volume relation-ships of gases are expressed by. There is a concept called heat capacity. It is the amount of heat you need to change the temperature of a body by one unit. It is an extensive.

It's already happening, and it's measurable. Is there a liquid-solid continuum? Today I began to think about the water of these lakes and the liquid-solid state continuum that must exist as the colder, less dense water rises to the top to freeze and its interaction with the dare I say "warmer" water below.

Conceptually, I think, there must be a "slush-zone" slightly above where the water is in equilibrium where the water is more viscous.

## Water's Unexpected Properties

I'm thinking of this in the same terms of the transition zones between magma and mantle. My mind wandered a bit after this, beyond the local lakes and the spring thaw to the constant cold polar regions.

If my idea of a "slush zone" is valid, then, while the water itself would be ever changing the zone's presence would be constant.

Does this increased viscosity make for a micro-environment of sorts? Randy- I made a guess as to what question you were following up.

### Temperature Effects on Density

You can write back if you meant another thread. It turns out that there really isn't a liquid-solid continuum.

• Pressure, temperature, and volume relation in liquids

There's an abrupt difference, in density, hardness, electrical properties, etc. The change between liquid and ice is thus called a "first-order phase transition". Slush is just a mixture of ice crystals in liquid water, not a real in-between state. If you leave it at some temperature for long enough, it will all turn to either ice or liquid, depending on the exact temperature.

Nevertheless, you're right that the viscosity of water does increase quite a bit as it gets colder. That's pretty typical for most liquids even if they aren't near a phase transition. Would the temperature rise, twice as much to 40 degrees celsius due to the pressure increase? For simplicity, let's say the copper pipe never expanded and none of the taps can leak.

### Pressure, temperature, and volume

Liquids transmit pressure - but, when they are not moving, AFAIK they hold a static pressure, almost like a "charge".

I wonder if since liquids are virtually incompressible, an increase in static pressure causes the liquid to heat up ideally. We could think of a liquid under pressure like a gas under pressure which cannot change volume, due to its special container that doesn't let it change volume the liquid itself! Yes, but ideal liquids? As for solids - well supposedly the fairly solid "earth" is under pressure causing tremendous heat in the center - kind of empirical evidence that pressure causes heat in solids.

So this might answer my question - but still! I have to ask about liquids specifically too. Or more pumps are added in series? I am also having trouble seeing how static water pressure can be increased without the pump turbine blades snapping in half due to the virtuallly incompressible water.

Animation : Relationship of Pressure with Volume and Temperature

I can visualize the dynamic pressure increasing once someone turns a tap on - but static pressure of liquids is a bit more tricky to visualize. Can a pump simply "shudder" and basically stay static, but still waste energy performing molecular work - increasing static pressure but not moving the water as a whole. Doesn't a pump motor have to move somewhat in order to perform work - but if the water cannot move.??? Well I suppose it is like turning on an electric lawn mower, and having a man grab the blade and hold it in one static position.