Keyword Analysis & Research: warm air rises and cold air sinks


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Frequently Asked Questions

Why does warm air rise and cold air sink?

Conventional knowledge has it that warm air rises while cold air sinks. But a study from the University of California, Davis, found that in the tropical atmosphere, cold air rises due to an overlooked effect — the lightness of water vapor. This effect helps to stabilize tropical climates and buffer some of the impacts of a warming climate.

What happens when warm air rises?

Therefore, when warm air rises, the air may not be able anymore to hold all the water that it has. Then the water will come “out of the air” and form very tiny drops– this is a cloud. If there is a lot of water, the drops can get bigger and bigger until they are heavy enough that they fall from the sky – it rains.

Why does warm air cool when cold air falls?

So, as warm air rises, it gets colder and colder. Therefore, the warm air cools. Similarly, when cold air falls it gets warmer. Of course, wherever air moves away, there has to be some ‘other’ air that moves into place where the air was before. Otherwise, we would have places without air.

What causes hot air to rise in a house?

As hot air rises, it moves outside to the top of your home, and the colder outside air is drawn in from the bottom through gaps, leaks, and windows, etc. The other factor is the negative pressure created by wind. When the wind blows, greater pressure is created on one side of your home than the other.

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