Why do winds swirl on the Earth?

Answer 1

Vortexes (wind in circles) are formed when masses of air (even water) move up or down significantly, toward or away from the equator. The Earth is rotating, and its surface is curved. The differences in momentum express as a "whirl", and it maintains until the difference in momentum is lost via friction. The wind rotates in circles because the Earth's surface is curved and moving in circles.

Answer 2

Winds in a cyclone in the Southern Hemisphere rotate in a clockwise direction.

Cyclones are known as hurricanes and typhoons in the northern hemisphere, where their winds rotate in an anti-clockwise direction.

As for how these winds start: Cyclones occur in areas of very low pressure when air that is heated by the sun rises rapidly, and becomes saturated with moisture which then condenses into high thunderclouds. As the atmosphere becomes favorable for development (no wind shearing in the higher parts of the atmosphere), normal thunder storms clump together.

When the hot air rises, cooler air rushes in to fill the area left vacant by the hot air. The Coriolis effect of the Earth spinning on its axis causes the air to spiral upwards with considerable force. This in turn causes the winds to rotate faster, causing the tropical low to deepen in intensity into a tropical depression, and eventually a cyclone which is anywhere between hundreds of kilometres to thousands of kilometres wide.

Cyclones are also characterised by strong winds, yet in their centre is a clear, calm region called the 'eye'. When the cyclone continues its course, and the winds return from the other direction, they may seem to be more violent. The winds are not just rotating; there is also the effect of the warmer air continually rising and cold air rushing in. That is why the winds are so strong, and seem to move in all directions.

Answer 3

The coriolis effect causes wind to curve due to earth's rotation

Answer 4

Because of earth rotating on its axis. this is called the Coriolis effect

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Answer 5

convection

Answer 6

so they can create a weather