Презентация на тему "Tornados"

Содержание

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  Tornados

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  A tornado is a violent, dangerous, rotating column of air that is in contact with both the surface of the earth and a cumulonimbus cloud or, in rare cases, the base of a cumulus cloud. Tornadoes come in many shapes and sizes, but are typically in the form of a visible condensation funnel, whose narrow end touches the earth and is often encircled by a cloud of debris and dust.

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  Most tornadoes have wind speeds less than 110 miles per hour (177 km/h), are approximately 250 feet (80 m) across, and travel a few miles (several kilometers) before dissipating.

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  Well-known historical tornadoes include: The Tri-State Tornado of 1925, which killed over 600 people in the United States; The Daulatpur-Saturia Tornado of 1989, which killed roughly 1,300 people in Bangladesh.

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  Reasons

  Storm isThe most studiedcause of a tornado. Rather the storm clouds that form the fast-moving currents of air, which subsequently form a funnel, slowly extending to the surface. Nature tornado occurrence is for scientists largely a mystery. 1. Tornadoes are formed when hot air and cold air are mixed. 2. The clouds grow larger and larger. Finally, a thunderstorm is brewed up with a strong updraft. 3. The moisture in the warm air rises and condenses into large clouds.

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  Results of tornado

  Effects 1. Tornadoes can make People die. 2. The tornado can destroy a lot of homes, stores, and much more. 3. It can make serious injuries.

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  Thanks for your attention!

  11 form Kytova Irina