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Warm anything, air or water will rise. Cold water is put at the bottom of the tank through a tube inside the tank. The water is heated and rises and is taken out of the top. The inside of the heater is open, it is just a hollow tube. That is why the hot water gets slowly colder, more cold water is being mixed with the hot in the tank.

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Q: Why water is generally heated from the bottom?
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What happened inside a beaker and on the bottom of the glass cover after you heated the water in the beaker?

Water can be condensed on the bottom of the glass cover.


When an electric kettle is switched on it will take a few minutes to heat the water how does the element at the bottom of the kettle heat all of the water?

As water at the bottom is heated, it rises and cold water replaces it. That's heated and the cycle continues until all the water is at the same temperature.


Why do heated fluids rise using the particle theory?

Heated fluids are less dense than their cooler counterparts. For example, water at 80 degrees F is less dense than water at 75 degrees F. Therefore, because it is less dense, it rises above the cooler fluid. This happens all the time when boiling water. The water at the bottom becomes more heated than the water at the top, and so rises to the top, moving the cooler water to the bottom of the pot, which then becomes heated and pushes the now cooler water that used to be on bottom back to the bottom, restarting the whole process. This is known as convection.


How does the density of most substances change when they are heated?

generally, the density of a substance decreaces when heated, with the exception of ice, which is less dense than water.


How is all of the water in a kettle can be the same temperature even if the kettle is heated only from the bottom?

the kettle is made from iron. Matter passes through and that's why the water is the same temperature as the bottom of the kettle.


How is all of the water in a tea kettle can be the same temperature even if the kettle is heated only from the bottom?

the kettle is made from iron. Matter passes through and that's why the water is the same temperature as the bottom of the kettle.


What is radiatoin?

convection is when heat or energy enters water and goes through it. for example, when you are boiling water in a pot on a stove,the water at the bottom of the pot haets up first before the water on top because it's in closest contect with the heat,then that water at the bottom heats up and becomes light because hot thing are lighter then cold ones. the heated up water rises up to the top and the cold water which is heavy falls to the bottom and heats up aswell. this cerculation keeps going until the whole pot of water is heated. thereafter the pot of water boils.


What 3 examples of convection?

convection currents an example is a heat radiator...it radiates heat which warms the air. the air rises as its heated and cooler air takes its place then being heated by the radiator...this continues until the room is heated and so is a pot is on a stove and the water is boiling and the cold water is at the top and it goes to the bottom


Small facts about distilling salt water?

the saltwater is boiled the steam rises and is collected as the salt is left solidified at the bottom of heated container.


How do you change fish water?

I gently syphon the water out from the bottom of the tank into a bucket, thereby removing the mulm and poo that have accumulated on the bottom of the tank. Then I use the dirty water to water pot plants etc. I top up the tank by syphoning water that I have heated and prepared with chlorine neutraliser back into the tank from the bucket.


Is boiling water radiation?

It would be convection. When the water at the bottom of the pot is heated, its particles move faster, and they also move farther apart. As a result, the heated water becomes less dense. Recall, less dense water will float on top of a more dense one. The heated water rises the surrounding cooler water flows into its place. This flow created a circular motion called convection currents. (:


How does water boil at the bottom of the ocean?

Because of the immence pressure at the bottom of the ocean the water is unable to turn to gas so does not actually boil. It remains in a super heated liguid state and quickly rises through the colder water until the water presure is such that the water can expand into gas or cools to the temperature of the water around it.