Weather Patterns Flashcards

(35 cards)

0
Q

The four types of air masses influence the weather in ______ _______

A

North America

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1
Q

Science classify air masses according to _______ and _________

A

Temperature

Humidity

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2
Q

What are the four major types of air masses?

A

Maritime tropical
Maritime polar
Continental tropicals
Continental polar

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3
Q

When an air mass move into an area and ________ with other air masses, it causes the weather to _______

A

Interacts

Changes

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4
Q

In the US, air masses are commonly moved by the _________ _______ and _____ ______

A

Prevailing Westerlies

Jet Streams

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5
Q

Air masses generally move from ____ to _____

A

West to east

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6
Q

When two ______ _______ collide that have different tempeture and humidity, they ________ mix easily

A

Air masses

Do not

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7
Q

The boundary where the air masses meet becomes a ______

A

Front

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8
Q

______ and _______ weather often develop along a front

A

Storms

Changeable

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9
Q

What are the 4 types of fronts?

A

Cold front
Warm front
Stationary front
Occluded front

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10
Q

_________ is dense and tends to _____

A

Cold air

Sink

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11
Q

_________ is less dense and tends to ________

A

Warm air

Rise

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12
Q

When fast moving cold air mass runs into a slow moving warm air mass, the denser cold air slides under the warm air and pushes it upward
( what front is this? )

A

Cold front

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13
Q

Warm air mass caught between 2 cold air masses

what front is this?

A

Occluded front

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14
Q

Fast moving warm air mass overtakes slow cold air mass

what front is this?

A

Warm front

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15
Q

Cold air mass and hot air mass meet, but cannot move each other
( what front is this? )

A

Stationary front

16
Q

A ______ is a violent disturbance in the atmosphere

17
Q

Storms involve sudden changes in _____________ that causes rapid _____________

A

Air pressure

Air movement

18
Q

What are the 2 types of storms?

A

Thunderstorms

Tornadoes

19
Q

What is Tornado Alley?

A

An area in the US where tornadoes occur more often than other parts of the US
( only a small corner of Arkansas is part of tornado alley

20
Q

Small storms often with heavy rain, thunder, and lightning

what type of storm I this?

21
Q

________ is a sudden spark, or electric discharge, as positive and negative charges move around

22
Q

_________ is the rapid heating of air by lighting that expands suddenly and explosively

23
Q

A _______ is a rapidly whirling, funnel shaped cloud that reaches down from a storm cloud to touch Earth’s surface

24
A _________ is a tornado that occurs over a lake or ocean
Waterspout
25
Tornadoes most commonly develop in ________ _________ ________
Thick cumulonimbus clouds
26
_________ most commonly develop on thick cumulonimbus clouds
Tornadoes
27
A waterspout is a tornado that occurs over a ______ or _______
Lake or ocean
28
What causes tornadoes to drop down from the cloud?
Air pressure changes
29
This area is where cold, dry air from Canada and warm, humid air from the Gulf meets most of the time
Tornado Alley
30
A _________ means that tornadoes are possible in your area
Tornado watch
31
A _________ mean that a tornado has been seen or spotted on radar in your area
Tornado warning
32
A tornado watch means that tornadoes are _______ in your area
Possible
33
A tornado warning means that a tornado has been ______ ______ in your area
Seen or spotted
34
Where is the safest place to be during a tornado?
Interior room Storm shelter Basement