Tropical Storms

What are Tropical Storms and what causes Tropical Storms?

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  • Tropical Storms
    • A large area of low pressure that causes swirling masses of clouds, strong wind and rain
    • They can be called hurricanes, cyclones, typhoons and willy-willies
    • Begins on seas between the tropic of cancer and the tropic of capricorn
      • It is close to the equator
    • They tend to move towards the west due to the rotation of the earth
    • Causes of Tropical Storms
      • 1. The sea is at 27 degrees or more. This causes evaporation and warm water vapour rises from the sea
      • 2. The water vapour cools as it rises into the atmosphere and turns back into water droplets, clouds are then formed.
      • 3. When clouds can no longer hold the water it falls as rain (called precipitation)
      • 4. The whole storm spins because of the earths radiation - this is called the cordis effect. The "eye" of the storm is created here.
      • 5. Trade winds blow the storm along
      • 6. The tropical storm can then blow on to the land and makes landfall. This is where it loses its energy.

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