Does cold water has more pressure than hot water?

Answer 1

It depends on how you define "pressure." In general, pressure is the amount of force applied to a particular area. If you are talking about the pressure the water (or any liquid) applies to its container, hot water is indeed "stronger." This is because the molecules of hotter substances move more rapidly, and in all directions - including "outside." (In fact, this rapid movement of molecules is precisely what temperature is.)

On the other hand, if "inner" pressure is what concerns you, cold water (orcold anything) is stronger, for the converse reason - the molecules are moving more slowly and staying more "together." Hence, cold weather is of a higher pressure than hot.

This phenomenon is naturally related to the two other phases of water - if the water becomes cold enough, its molecules more or less stop moving altogether and it freezes into ice (and no situation is of greater pressure than getting frozen!) whereas if it moves rapidly enough, the molecules' bonds will break apart more or less altogether, and it will evaporate into steam (which has enough pressure to power a locomotive piston!).

Answer 2

If you mean to ask if cold bodies of water are associated with high or low atmospheric pressure, they aren't. Atmospheric pressure can change independently of the temperature of bodies of water.

Answer 3

Well, cold water will sink below hot water if you put the two together in a container. If by 'thicker' you mean 'denser', then YES, but by a very small degree.

Cold water is DENSER than hot water, because when something is hot its molecules move faster than when something is cold. This means more spaces between molecules.

Hope this helps...

Answer 4

of course it does. That is why a good trick to speed up freezing of water is to have ice trays that already are cold or have other ice cubes in it... it gets you closer to the freezing point faster. If water is hot, it needs more energy to just reach freezing than water already cold.

Answer 5

No it does not. The heating of water causes the molecules of hydrogen and oxygen to become 'excited' and 'vibrate' at a higher rate than cold water. The hotter the water gets, the more of a reaction it gives off. The chemicals begin to separate and cause steam. This action is the direct cause of pressure building in a closed container. In any open containers the difference in the pressure is very small and then only exists because of our atmospheric pressure.

Answer 6

Hot water is hot. Heat is a form of energy, hence it has more kinetic energy!

Answer 7

Yes.