Air Masses Flashcards

1
Q

What is Air mass

A

A huge body of air that has similar temperature, humidity, and air pressure at any given height.

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2
Q

Humidity level

A

It depends on if the air mass forms over water or land

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3
Q

What is temperature?

A

It depends on the latitude (closer to the equator is warmer and closer to the polls is colder)

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4
Q

How does the air mass move?

A
  1. Global wind patterns move air through the glob
  2. Helps make weather predictions
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5
Q

Jet streams

A

A band of high-speed winds high up in the atmosphere blowing west to east carry air masses in same direction

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6
Q

Prevailing westerlies

A

Major wind belt over the USA pushes over air masses from the west east

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7
Q
  1. m= Maritime
  2. c= Continental
  3. T= tropical
  4. P= polar
  5. A= arctic
A

Maritime = overwater
Continental = overland
Tropical = low latitude (hot)
Polar = medium latitude (cool/cold)
Arctic = high latitude (frigid)

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8
Q

Continental tropical

A

Ct, land by equator, dry and hot

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9
Q

Continental polar

A

cP, land mid latitude, dry and cool/cold

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10
Q

Continental Arctic

A

cA, Land Arctic area by the poles, dry and frigid

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11
Q

Maritime Tropical

A

mT, water by equator, wet, and hot

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12
Q

Maritime polar

A

mP, water, mid latitude, wet, and cool /cold

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13
Q

What are the characteristics associated with the continental polar air mass?

A

Cold and dry

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14
Q

What type of air mask would form over the warm water near the equator?

A

Mary time tropical

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15
Q

What three characteristics do air molecules have to have in common to be considered an air mass?

A

Temperature, humidity, and air pressure

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16
Q

Front

A

Boundary between two air masses

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17
Q

Stationary front

A

When an air mess hardly moves or does not move at all for an extended period of time

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18
Q

Local weather conditions change due to the movement of..

A

Air masses

19
Q

An air mass that forms over northern Canada will be ___ and __.

A

Dry and frigid

20
Q

Why does a cold front tend to push up a warm front?

A

Cold front move faster because colder is more dense, and there are more molecules of material wedges under warm front, causing it to lift

21
Q

Meteorologist

A

Is a scientist who studies the weather

22
Q

What do ocean currents do?

A

They greatly affect the temperature of air masses above the water as well as moisture content acts like a conveyor belt

23
Q

We in the United States are tornadoes most likely to form? Why?

A

Central plains states because that is the area where cool air form Canada/jetstream (north) the warm air from the Gulf of Mexico (south)

24
Q

Radar

A

Monitors their formation and warnings are sent out

25
Q

Thunderstorm

A

They usually formal along a cold front, rapidly rises, air causes, wind, and heavy rain, thunder, booms proceeded when lightning heats up the air and surrounding air is compressed rapidly= release sound energy

26
Q

What’s the dangers of thunderstorms?

A

Strong winds, rain, deadly lighting, and the danger of flash flood

27
Q

Hurricanes

A

They are low pressure systems, gain energy from the water warmed by the sun and it’s very long lasting. It could exist for a week or more and can travel thousands of kilometers. 74 miles per hour

28
Q

What’s safety when it comes to hurricanes?

A

Have a three day supply of food, water, diapers, medication and necessary supplies. board up windows and secure things to walls if warned ahead of time and do not go in a basement

29
Q

Blizzards and ice storms

A

Blizzards are heavy, wind and snow and ice storms can disrupt electric and phone devices can occur suddenly as rainfall begins to freeze drifting snow can stop transportation

30
Q

Droughts

A

Long period of time with little or no rainfall

31
Q

What can be caused by drought?

A

Hot and dry weather, and it leads to crop failure, wildfires, drinking water shortages

32
Q

Weather

A

The average annual conditions of temperature, precipitation, winds and cloud cover in an area

33
Q

Dam

A

Barrier across a river, helping to redirect the flow of water

34
Q

Levee

A

A buildup of land which are used near the rivers to block water from flooding over

35
Q

New Mexico has hot, dry weather. What type of air mask will most likely form here?

A

Continental tropical

36
Q

When cold air masses form Canada meet warm air masses from the Gulf of Mexico, they form..

A

Tornadoes

37
Q

When two air masses meet they can form tornadoes. What are the two air masses?

A

CP and MT

38
Q

Cold air is ___ dense, then warm air and therefore ____.

A

More, sinks

39
Q

Where to protect yourself from this type of storm is to go under a sturdy object or to an underground cellar.

A

Tornado

40
Q

An air mask that forms over cold/cool water is called ____

A

Maritime pol

41
Q

What should you do during a tornado?

A

Get to the lowest possible possible place basement/storm cellar

42
Q

What should you do during a tornado?

A

Get to the lowest possible possible place basement/storm cellar

43
Q

Tornadoes _____

A

Form over land in low pressure systems

44
Q

This type of severe weather condition gets its strength from the warm waters it forms in..

A

Hurricanes