Water can be hot or cold if you want
Tepid water is between hot and cold.
Hot and cold water can separate due to differences in their temperature and density. When hot and cold water are combined, the hot water tends to rise to the top because it is less dense than the colder water below. This process is known as thermal stratification.
In hot water the molecules vibrate faster than cold, resulting in the same number of molecules taking up a larger space. This means that hot water is less dense than cold water, and thus floats above the cold water.
The hypothesis of mixing hot and cold water is that the resulting water will reach a temperature that is the average of the initial temperatures of the hot and cold water. This is based on the principle of thermal equilibrium, where heat will transfer from the hotter water to the colder water until they reach a common temperature.
This is due to the phenomenon known as contrast effect. When you first put your hands in cold and hot water, your nerves respond to the extreme temperatures. When you move them to the lukewarm water, the hand that was in the cold water will perceive the water as hot because of the contrast in temperatures.
No, cold water is not hot. Cold water is at a lower temperature than hot water.
HOT rises COLD sinks
Cold water
Hot water is less denser than cold water and has a greater temperature.
Hot water is less denser than cold water and has a greater temperature.
If you let hot water cool down, it will become cold water.
Tepid water is between hot and cold.
No, cold water is piped into the hot water tank and is heated by electricity or gas, it then flows out to the hot water taps.
A hot water heater is designed to supply hot water to faucets, not cold water. It is not possible for a hot water heater to siphon into a cold water faucet. Each faucet is connected to either the hot or cold water supply lines, which are separate in a plumbing system.
hot and cold b/c Hot + Cold = warm which is the best temp
Water is always H2O whether it is hot water, cold water, ice, or steam.
cold water