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Dust devils
If you live somewhere in the hot
plains of India, you would have seen
small whirls of dust spinning along
the ground. They also pick up small
leaves and bits of paper coming
their way. These are tiny dust devils.
Rising and spinning …
Dust devils, like tornadoes, are vertically Dust devils usually last for a few minutes only,
spinning columns of air. They can grow but some can cause damage to small structures.
up to a thousand metres high! But unlike
tornadoes, which start from a cloud, dust
devils start from the ground. And they are
never as destructive or long-lasting
as tornadoes.
A dust devil is formed when hot The air begins to rotate and
air near the surface of the earth is stretched vertically.
begins to rise and passes
through a small pocket of Hot air rises and passes
cool air. The air begins to through a small pocket
rotate as it moves upwards. of cool air.
As it rises, it is stretched
vertically and the spinning
increases. As the air rises
further, more hot air enters from
the bottom and replaces the rising
air. The spinning increases and a dust
devil is formed.
Most often,
dust devils
form in
places where
the surface
temperatures
can become
very high.
If you live somewhere in the hot
plains of India, you would have seen
small whirls of dust spinning along
the ground. They also pick up small
leaves and bits of paper coming
their way. These are tiny dust devils.
Rising and spinning …
Dust devils, like tornadoes, are vertically Dust devils usually last for a few minutes only,
spinning columns of air. They can grow but some can cause damage to small structures.
up to a thousand metres high! But unlike
tornadoes, which start from a cloud, dust
devils start from the ground. And they are
never as destructive or long-lasting
as tornadoes.
A dust devil is formed when hot The air begins to rotate and
air near the surface of the earth is stretched vertically.
begins to rise and passes
through a small pocket of Hot air rises and passes
cool air. The air begins to through a small pocket
rotate as it moves upwards. of cool air.
As it rises, it is stretched
vertically and the spinning
increases. As the air rises
further, more hot air enters from
the bottom and replaces the rising
air. The spinning increases and a dust
devil is formed.
Most often,
dust devils
form in
places where
the surface
temperatures
can become
very high.
