Convection is the mode of heat transfer that is taking place in boiling of a water.
Answer (Detailed Solution Below) Option 3 : Convection
CONCEPT:
- Heat Transfer: Heat is transferred from one place to another in substance due to temperature difference.
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Three modes of Transmission of heat |
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Conduction |
Convection |
Radiation |
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Heat dissipates from one place to another by molecular vibration |
Heat is transfer from one place to another by transfer of molecules |
It transfers heat in the form of electromagnetic wave |
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Conduction is relevant to solid only. |
Convection happens in liquid or gases |
It can heat any form of material. |
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Need medium to transfer heat |
Need medium to transfer heat |
No need of medium |
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Good Conductor– The objects which transfer heat easily. Ex- metals, human body etc Bad Conductor– The objects which do not transfer heat easily. Ex- Wood, Air, etc. Thermal Insulator– No heat is transferred by any means. Ex- Abonite, asbestos etc. |
When molecules are heated they headed upward and upper molecules go downward and this cyclic process continues. Boiling of fluid |
Heat travels in terms of energy packets or waves The heat absorbed by body gain energy Radiations of Sun |
- Evaporation: In this process the liquid form a substance tends to convert in the gaseous phase on the uppermost surface due to heat and pressure.
- Condensation: In this process the gaseous phase of an object tends to convert into liquid form due to pressure and temperature.
EXPLANATION:
- Once the lower molecules of pot get heated comes at the top.
- And the upper molecules are heavy therefore goes down due to gravity.
- This cyclic process continues heating occurs.
While heating a fluid in pot Convection takes place.
Mock Tests & Quizzes
Convection in hot & cold water
FAQ
Is boiling water radiation conduction or convection?
Is boiling of water free convection?
What is the process of boiling water called?
Is convection the same as boiling?
Does boiling water cause convection?
Convection can be observed when you boil water. The hot water increases in thermal and molecular kinetic energy and rises as it becomes less dense. The water transfers heat to the surrounding water and air and eventually sinks. This creates the circular current that can be observed in a pot of boiling water.
How does convection transfer heat?
Convection is heat transfer via the movement of a fluid, such as air or water. Heating water on a stove is a good example. The water at the top of the pot becomes hot because water near the heat source rises. Another example is the movement of air around a campfire. Hot air rises, transferring heat upward.
How does water boil?
On Earth, water boils via natural convection. To simplify a bit, boiling is actually a very efficient heat transfer process and, in this case, boiling transfers the heat from the fire on your stove to the water that will cook your pasta.
What does convection mean in science?
The definition of convection in science is the transfer of heat through liquids or gases. Convection is one of three types of heat transfer, along with convection and radiation. How do you explain convection? Convection is the process of heat transfer through gases or liquids.