28.2 Flashcards

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1
Q

Jet Stream

A

A narrow band of fast moving, high altitude air.

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2
Q

Coriolanus effect

A

The deflections of an object due to the Earth’s rotation

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3
Q

Air mass

A

A large volume of air with uniform moisture and temperature throughout.

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4
Q

Weather fronts

A

Air masses interact in zones

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5
Q

How many Jet streams are there in the world?

A

Four (two polar and two subtropical)

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6
Q

Pressure System

A
  1. Low-pressure system
  2. High-pressure system
    The pressure system depends on the direction if airflow, which is do to the Coriolis effect
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7
Q

What is a low pressure system known as?

A

Also known as an cyclone, it is the opposite of an area of high pressure, or a anticyclone.

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8
Q

Which way does the air flow fro a low pressure system?

A

Because of Earth’s spin and the Coriolis Effect, winds of a low pressure system swirl counterclockwise north of the equator and clockwise south of the equator.

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9
Q

What are some results of low pressure system?

A

A low pressure system has lower pressure at its center than the areas around it. Winds blow towards the low pressure, and the air rises in the atmosphere where they meet. As the air rises, the water vapor within it condenses, forming clouds and often precipitation.

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10
Q

What is a high pressure system known as?

A

High (H)

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11
Q

Which way does it flow?

A

Counterclockwise

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12
Q

Where does the airflow go?

A

Away from the center

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13
Q

What is the result of a high pressure system?

A

Causes the air to sink, which results in clear skies.

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14
Q

What are the four weather fronts?

A

Cold warm stationary occluded

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15
Q

How is a cold front created?

A

Cold air is coming in which is forcing the warm air upward in a fast and chaotic manner.

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16
Q

How is a cold front represented?

A

Blue triangles

17
Q

How are warm fronts created?

A

Warm air rises gently above cold air, stratus type clouds or fog, can create steady rain.

18
Q

How is a warm front represented on a news forecast?

A

Red semicircles

19
Q

How are stationary fronts created?

A

Cold and warm air masses met and neither front advances, can last for days, produce clouds and prolonged precipitation.

20
Q

How is a stationary front represented?

A

Both semi-circles and triangles.

21
Q

How are occluded fronts created?

A

A fast- moving cold front overtakes a slow warm front, and thunderstorms and strong winds often occur.

22
Q

How is it represented?

A

Purple semi circles and triangles on top of the line.