Severe Weather Notes Flashcards

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1
Q

Lightning happens when

A

An electric discharge that takes place between positively charged area and a negatively charged area

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2
Q

Thunder is the sound caused by

A

Rapid expansion of air along the lightning strike

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3
Q

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

A

75%;1%

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4
Q

How long are tornadoes and what is the average wind speed and the 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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5
Q

Hurricane wind speed

A

At least 110 km/hr

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6
Q

Names for hurricanes in the western pacific and Indian Ocean

A

Western pacific: typhoon

Indian Ocean:cyclone

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7
Q

Diameter of a hurricane

A

160-1500 km

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8
Q

How do hurricanes form

A

Begins as thunderstorms, winds split in different directions,energy is obtained from condensation of water vapor, once it hits warm ocean water, condensation fuels the hurricane

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9
Q

Strongest part of the hurricane and the wind speeds

A

Eye wall

Winds up to 300 km/hr

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10
Q

The names of hurricanes are assigned in advance for a ________ year cycle

A

6

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11
Q

Storm surge height

A

8 m high, 65-160 km long

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12
Q

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

A

Shore

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13
Q

Thunderstorms are caused when

A

Warm, moist air rises

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