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Learn more about hurricanes and tornadoes, the areas of the world they affect, how they are formed and when, and what you can do to survive such an extreme storm.

PROGRAMMAZIONE

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FASI OPERATIVE

FASE 6

Research on the emergency procedures and safety tips that can keep you safe before, during and after a hurricane. Type in several of them.

Verifica e valutazione

List several emergency procedures and safety tips that will prepare you for a tornado.

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FASE 5

Tornadoes are the most violent storms on Earth

Watch the video then type in a short explanation of how the tornadoes are formed.

Discussione ed elaborazione di un cartellone

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FASE 4

The classification system for tornadoes is called The Fujita Scale (or F scale), and it's an F0 to F6 categorization of the tornado's intensity.

Each category expresses the intensity in miles per hour.

Example: category F0 (40–72 mph; includes damages to trees, chimneys, and billboards).

Type in the other 5 categories.

Sondaggio su come viene gestito a casa di ognuno, l’uso dell’energia

FASE 3

Tornadoes can occur almost all over the world, but US's unique geography makes it the ideal place for their development.
Type in the tornado seasons in the United States, taking into account the
Southeast and Northern Plains regions.

Osservazione oggettiva ed individuazione di fonti rinnovabili di energia dal punto panoramico della città

FASE 2

Which are the areas/countries of the world hit most frequently or severely by tornadoes? Choose from the options below or add your own.

Visione del filmato

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FASE 1

Tornadoes are local storms of short duration (this ranges between 5 and 10 minutes) formed of winds that rotate at very high speeds, usually in a counter-clockwise direction.
A tornado's characteristics:

• Time of day: they usually occur in the afternoon (3 - 7 PM)
• Direction: usually from southwest to northeast
• Length of path: this is the distance it travels; the average is 4 miles, but it could also travel around 300 miles.
• Width of path: averages between 300 and 400 yards but tornadoes have cut paths a mile or more in width.
• Speed of travel: though speeds of 68 mph have been reported, the average speed is somewhere between 25 and 40 mph.
• Cloud: dark cumulonimbus (thunderstorm cloud) from which the funnel-shaped pendant extends to the ground.
• Precipitation: rain and hail before the tornado hits and heavy downpour to the side of the tornado's path.
• Sound: roaring, rushing noise.

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Rifletto