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ECE Enviro Study Pack > Study - Dec. 11 Quest > Flashcards

Study - Dec. 11 Quest Flashcards

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1
Q

What is a hurricane?

A

A large circular rotating storm that forms over warm ocean waters

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2
Q

Which way does a hurricane rotate?

A

Clockwise in Southern hemisphere; Counter clockwise in Northern hemisphere

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3
Q

What happens in the spiral rain bands of a hurricane?

A

“Squally” weather, tornadoes

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4
Q

What happens in the eye wall of a hurricane?

A

Strongest winds and rain

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5
Q

What happens in the eye of a hurricane?

A

Calm, blue sky

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6
Q

If a hurricane’s speed is in the range of 74-95 mph, what would it’s category be?

A

Category 1

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7
Q

If a hurricanes speed is in the range of 95-110 mph, what would it’s category be?

A

Category 2

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8
Q

If a hurricanes speed is in the range of 111-129 mph, what would it’s category be?

A

Category 3

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9
Q

If a hurricanes speed is in the range of 130-156 mph, what would it’s category be?

A

Category 4

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10
Q

If a hurricanes speed is greater than or equal to 157 mph, what category would it be in?

A

Category 5

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11
Q

What is a tornado?

A

A small scale violently rotating columns of air extending from the base of a thunderstorm

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12
Q

What are some environmental tornado conditions?

A

Warm unstable air mass with a vertical motion, thunderstorms, and directional wind shear - Winds in different directions and different heights; this provides spin to the atmosphere - creates supercell thunderstorms

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13
Q

What is a tornadoes structure?

A

Updrafts and downdrafts, stronger the updraft the more hail potential, and directional wind shear will cause the column to rotate

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14
Q

If a tornadoes speed was 65-85 mph, what would be it’s EF?

A

EF-0

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15
Q

If a tornadoes speed was 86-110 mph, what would be it’s EF?

A

EF-1

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16
Q

If a tornadoes speed was 111-135 mph, what would be it’s EF?

A

EF-2

17
Q

If a tornadoes speed was 136-165 mph, what would be it’s EF?

A

EF-3

18
Q

If a tornadoes speed was 166-200 mph, what would be it’s EF?

A

EF-4

19
Q

If a tornadoes speed was 200+ mph, what would be it’s EF?

A

EF-5

20
Q

What are the top 5 states for earthquakes to happen in?

A

Alaska, California, Nevada, Hawaii, Washington

21
Q

How do earthquakes occur?

A

Pressure builds as tectonic plates converge, diverge, or slide past each other. When the pressure releases, an earthquake happens

22
Q

Where do most earthquakes happen?

A

Pacific ocean or “Ring of Fire”

23
Q

What scale is used to rate the severity of earthquakes?

A

The Ritcher Scale; 1-10; 1 is least severe; 10 is most severe

24
Q

What are seismometers?

A

Seismometers measure the severity of earthquakes and are found underground

25
Q

What are p-waves?

A

Slow moving, deep, an can move through molten rock. They are seismic waves that are created by earthquakes

26
Q

What are s-waves?

A

Fast moving, found near surface, and can’t move through molten rock. They are seismic waves that are created by earthquakes.

27
Q

What is the focus?

A

Point where quake occurs under the surface of the earth

28
Q

What is the epicenter?

A

Point where quake is centered on the surface of the earth

29
Q

What is a foreshock?

A

Smaller quakes that happen before the main earthquake; don’t always happen

30
Q

What is an aftershock?

A

Smaller quakes after the main earthquake

31
Q

What are tsunamis?

A

Large waves of water that come from earthquakes in the ocean

32
Q

What are tsunamis caused by?

A

Earthquakes in the ocean

33
Q

How fast can tsunamis be?

A

Can reach speeds of 500 mph

34
Q

How high can a tsunami be?

A

Can reach a height 100 feet

35
Q

Where are tsunamis most common?

A

The pacific ocean

36
Q

In which U.S state did the Good Friday Earthquake of 1964 occur: Hawaii, Washington, California, or Alaska?

A

Alaska

37
Q

If there was an earthquake with magnitude 5.0 and another with a magnitude of 3.0, how many times stronger is the 5.0 earthquake?

A

20 times stronger

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