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How Does a Convection Heater Work?

Important Questions on Energy

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Science>Physics>Energy>Thermal Convection
Why is a room heater placed near the floor and an air conditioner near the ceiling?
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Science>Physics>Energy>Thermal Convection
While doing an experiment on plotting the temperature-time graph of hot water as it cools, we can get a good graph:
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Science>Physics>Energy>Thermal Convection
When air is heated, the speed of molecules _____.(increases/ decreases/ stays same)
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Science>Physics>Energy>Thermal Convection
Convection is that mode of transmission in which heat travels from one point of the medium to another
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Science>Physics>Energy>Thermal Convection

In convection currents, hot air moves

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Science>Physics>Energy>Thermal Convection
Which of these heats up faster?
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Science>Physics>Energy>Thermal Convection
 Why are convection currents seen in liquids and gases, and not in solids?
MEDIUM
Science>Physics>Energy>Thermal Convection
Land and sea breezes are due to the process of _____.
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Science>Physics>Energy>Thermal Convection
Sea and land breezes :
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Science>Physics>Energy>Thermal Convection
When air is heated, the separation of molecules _____.(increases/ decreases/ stays same)
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Science>Physics>Energy>Thermal Convection
For proper ventilation of the building, windows must be open near the bottom and top of the walls to let pass 
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Science>Physics>Energy>Thermal Convection
Air is a bad conductor of heat, still vacuum is preferred between the walls of the thermos flask because
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Science>Physics>Energy>Thermal Convection
The convection currents in air transfer heat:
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Science>Physics>Energy>Thermal Convection

All liquids, with the exception of ________, are poor conductors of heat.

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Science>Physics>Energy>Thermal Convection
When air is heated, the temperature _____.(increases/ decreases/ stays same)
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Science>Physics>Energy>Thermal Convection
Land breeze and sea breeze are set up in coastal areas because of
MEDIUM
Science>Physics>Energy>Thermal Convection
Room heaters work on the principle of _____.
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Science>Physics>Energy>Thermal Convection
When air is heated, the mass _____.(increases/ decreases/ stays same)
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Science>Physics>Energy>Thermal Convection
When air is heated, the density _____.(increases/ decreases/ stays same)
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Science>Physics>Energy>Thermal Convection
The layers of atmosphere are heated through