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
Thunderstorm
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
What’s the dangers of thunderstorms?
Strong winds, rain, deadly lighting, and the danger of flash flood
27
Hurricanes
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
What’s safety when it comes to hurricanes?
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
Blizzards and ice storms
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
Droughts
Long period of time with little or no rainfall
31
What can be caused by drought?
Hot and dry weather, and it leads to crop failure, wildfires, drinking water shortages
32
Weather
The average annual conditions of temperature, precipitation, winds and cloud cover in an area
33
Dam
Barrier across a river, helping to redirect the flow of water
34
Levee
A buildup of land which are used near the rivers to block water from flooding over
35
New Mexico has hot, dry weather. What type of air mask will most likely form here?
Continental tropical
36
When cold air masses form Canada meet warm air masses from the Gulf of Mexico, they form..
Tornadoes
37
When two air masses meet they can form tornadoes. What are the two air masses?
CP and MT
38
Cold air is ___ dense, then warm air and therefore ____.
More, sinks
39
Where to protect yourself from this type of storm is to go under a sturdy object or to an underground cellar.
Tornado
40
An air mask that forms over cold/cool water is called ____
Maritime pol
41
What should you do during a tornado?
Get to the lowest possible possible place basement/storm cellar
42
What should you do during a tornado?
Get to the lowest possible possible place basement/storm cellar
43
Tornadoes _____
Form over land in low pressure systems
44
This type of severe weather condition gets its strength from the warm waters it forms in..
Hurricanes