Water becomes more DENSE as it Cools....until it Freezes. At the Freezing Point water expands and becomes less Dense...as ICE. That is why ICE Floats in liquid water.
As to its Purpose...can't give a specific answer for that using Pure water. The Principle is used in many water HEATING devices. The Heating Element is at the bottom of a Water Heater because the cold water sinks and stays at the bottom. That is why the Cold water inlet has a long tube from the top connector to the bottom of the tank...it keeps down the mixing of already Heated water with the Cold input water.
Water is pure by nature, however it gets dense due to different impurities. Impurities such as salt and tiny minerals cause the water to get dense.
Sea water is more dense than fresh water because it contains dissolved salts, minerals, and other substances that increase its mass without significantly increasing its volume. This increased mass causes sea water to be more dense than fresh water, which has a lower concentration of dissolved substances.
Water in general is not more dense in Utah. The water of the Great Salt Lake, however, is very ... um ... salty. The dissolved minerals in it make it more dense. The Great Salt Lake is actually significantly saltier than ocean water.
Because it is more dense
It makes the water more dense.
Anything that sinks in water is more dense than water.
more dense
Water becomes dense when it is more saturated than absorbing a solution. For example, salt with make water more dense because as more salt is added, it becomes saturated.
You can make a substance that is more dense than water sink by placing it in water and allowing gravity to pull it downward. The substance will displace the water and sink until it reaches a point where its weight is balanced by the buoyant force of the water acting against it.
Water is more dense.
Water is 784 times more dense than water.
no, oil is not more dense than water