Severe Weather Notes Flashcards

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1
Q

Thunder is the sound caused by

A

Rapid expansion of air along the lightning strikes

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2
Q

What percent of tornadoes happen in the US? What percent of thunderstorms become tornadoes?

A

75%,1%

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3
Q

How long are tornadoes and what is the average wind speed and spinning wind speed

A

Length: 8km long 10-60m wide
Wind speed120-180km/hr
Spinning winds up to 500 km/hr

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4
Q

Hurricane wind speed

A

At least 110 km/hr

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5
Q

Names for hurricanes in western pacific and Indian Ocean

A

Western: typhoons
Indian: cyclones

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6
Q

Diameter of a hurricane

A

160-1500 km

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7
Q

How do hurricanes form

A

A group of thunderstorms split by wind, energy is contained through condensation,

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8
Q

Strongest part of the hurricane and wind speeds

A

Eye wall

Up to 300 km/hr

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9
Q

Storm surge height

A

8 m high

160 km long

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10
Q

The storm surge has its greatest height right before it crashes into the

A

Shore

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11
Q

Thunderstorms are caused when

A

Warm, moist air rises

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12
Q

Lightning happens when

A

An electric discharge that takes place between a

Positively charged area, and a negatively charged area

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