The highest density of water is at the temperature of 4oC (ie. 1.000 kg/dm3), above or below this the density is lower.
cold ocean water is more dense than warm water
Cold water is more dense.
cold ocean waer has more dense than warm water.
Water is more dense the colder it becomes. It is also more dense the saltier it becomes.
Cold salty water will be the most dense.
Cold salty water will be the most dense.
Cold salty water will be the most dense.
Warm water is less dense than cold water, so it sits on top of the cold water. This is because warm water molecules are more spread out and have less mass per unit volume compared to cold water molecules, causing warm water to be less dense and float on top of the denser cold water.
Warm water tends to stay on top of cold water because it is less dense. When water is heated, the molecules move farther apart, making warm water less dense than cold water. This difference in density causes warm water to float on top of cold water.
As water gets colder it eventually becomes ice. So judging by that, as water gets colder the water gets denser to the point of being a solid. Cold water is more dence than warm water. Ice is less dense than water (which is why it floats) so... but I think the above is still correct.
Cold air is more dense than warm air.
If you think to density (not weight) hot water is less dense.