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5 Cards in this Set
- Front
- Back
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how do hurricanes form? |
1) tropical storms begin when thunderstorms move over tropical ocean water 2) tropical oceans warm the air above it 3) this warm, moist air starts to rise 4) because this air is evaporating, there is less air left near the surface 5) surrounding air moves into low pressure area to fill the space, causing wind speeds to increase 6) as the warmed air rises and cools off,the water in the air forms clouds 7) whole system of clouds and wind spins due to trade winds and earth's rotation 8) as the storm moves over oceans, it picks up more warm air and grows. The speed of its winds increases as more air is sucked in. 9) it can take days to form a tropical storm. the eye is an area of calm winds which are surrounded by the deadly eye wall of high winds and rain |
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what does a hurricane start off as? |
it starts as a tropical wave, a westward moving area of low air pressure |
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what does the wind speedhave to be for a hurricane to be called that? |
73 mph |
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what do wind speeds have to be , for a hurricane to be called a tropical depression? |
38 mph |
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what do wind speeds have to be, for a hirricane to be called a tropical storm? |
39 - 73 mph |
