Question

Explain the reason for all following statements .when heat is applied at the bottom of the water vessels , then its gets heated more quickly than when it is heated at the top

Answer 1

Answer:

The water in the vessel gets heated up faster when heated up from bottom than top because when it is heated up from bottom the water gets warm and move up due to its low density... When a substance is heated then it's density decreases due to which it goes up... In this case too the water gets up and the cold water from top gets down this process repeats and a time comes when the water gets its boiling point and gets evaporated...

But if we heat the vessel from top then the water can not go down and only the upper part of water gets heated up and the bottom of the vessel does not get the heat due to which the water does not gets heated up faster...

Answer 2

Answer: Due to low density, warm water travels upward, hence it gets heated more quickly when heat is applied to the bottom than applied at the top.

Explanation:

• Any substance such as water when heated its density reduces.

• When we heat the water vessels from the bottom, the water gets heated up and its density decreases. It will start to travel upward due to lessening density and all the water in the vessel will get heated quickly.

• On other hand, when we give heat to water vessels from above, due to decreased density warm water would not move downwards. And hence all water in the vessel will not get heated quickly.

• This is the reason when heat is applied at the bottom of the water vessels, then it gets heated more quickly than when it is heated at the top.