Chapter 7 Flashcards

1
Q

Weather

A

Temperature, precipitation, air pressure, humidity, wind speed.

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2
Q

Subtropical, Hot Desert

A

High temperatures
Warm soils; grasses, shrubs and succulents

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3
Q

Whether and climate is predicted when?

A

Snapshot
Long term

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4
Q

Air mass

A

Body of air usually referred by region.
Ex: North America, maritime tropical, continental tropical, maritime polar, and continental polar.

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5
Q

Air mass includes conditions such as,

A

Temperature
Humidity
Stability

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6
Q

Weather patterns can occur,

A

When two different air push against each other but don’t mix.

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7
Q

Moister

A

maritime [wet] Over water
continental [dry] Over land

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8
Q

Continental Polar (P)
Where?
When?
Latitude?
Weather?

A

N. Hemisphere only
Most developed in the winter
Middle- to high-latitude weather
Dense, cold air displaces moist, warm air, lifting and cooling this warm air
Cold, stable air, clear skies, high pressure

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9
Q

Maritime Polar (mP)
Where?
Weather?
What happens?

A

Sit over northern oceans
Cool, moist, unstable, low pressure
West: heavy rains as cool, moist air flows over mountains East: not as developed as the west

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10
Q

Maritime Tropical (mT)
Gulf/Atlantic

A

Extremely unstable, high energy, moist, a lot of rain from late spring to early Fall

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11
Q

Maritime Tropical (mT)
Pacific

A

Stable to conditionally stable, lower in moisture and energy, low average precipitation compared to mT Gulf/Atlantic

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12
Q

Air Madd Modification

A

Air masses move to another region then the temperature changes when going into another region.

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13
Q

Convergent Lifting

A

Occurs when streams of air flowing into a low-pressure area collide and are pushed upward

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14
Q

Convectional Lifting

A

When solar energy passes through the atmosphere and heats the surface, where the air becomes less dense than the air around it, making it rise.

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15
Q

Orographic Lifting

A

Changes to airflow when the elevated terrain, such as mountains, forces air upward.

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16
Q

Frontal Lifting

A

When the air masses collide, the colder air masses will have a higher density, and the warmer air masses will have a lower density

17
Q

Cold front

A

Cold air that pushes under a mass of warm air.

Causes precipitation, thunderstorms, and tornadoes

18
Q

Warm Front

A

Forms when a relatively moist, warm air mass slides up and over a cold air mass.

19
Q

Ice Storms and Blizzards
Blizzards

A

Mid- to high-latitude regions
Occurs when a layer of warm air is between 2 layers of cold
As rain falls through warm layer, sleet can form (freezing rain)
Blizzards - snowstorms with high winds

20
Q

Thunderstorm Basics

A

Lightening and thunder, and high wind speeds
May develop within an air mass, in a line along a front, or mountain slopes

21
Q

Thunderstorm Formation

A
  1. Warm air moves upward, cools to form clouds.
  2. Energy is released due to latent heat from condensation, creating powerful upward current.
  3. Water droplets grow and ice particles also form in the cold creating downdrafts.
22
Q

When and where is a tornado common?

A

Central US, OK/TX
Spring and summer

23
Q

Tropical Cyclones

A

Hurricanes, typhoons, cyclones

24
Q

The warmer the ocean and atmosphere…

A

The more intense.

25
Q

Tornado

A

A funnel cloud is formed extending from a
thunderstorm.

26
Q

Predicting a tornato

A

Predicting a tornado is difficult.
Satellites/Doppler
When there is a hook: 15-30 minute warning
Enhanced Fujita Scale

27
Q

Enhanced Fujita Scale

A

How a tornado is measured and labeled.

28
Q

Turbulence

A

Created by mixing of different air densities or by layers of air moving at different speeds and directions

29
Q

Wind sheer

A

Extreme and sudden variation in wind speed (and direction)

30
Q

High wind sheer (extreme/sudden variation)

A

Hail and tornadoes lightening (build up of electrical energy) and thunder (shock waves)

31
Q

North America

A

Hurricanes

32
Q

West Pacific, Japan, Philippines

A

Typhoons

33
Q

Indonesia, India, Bangladesh

A

Cyclones