Weather Flashcards

1
Q

What is a mT air mass? What weather does it bring?

A

Maritime tropical air masses bring warm and humid weather.

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2
Q

What is a mP air mass? What weather does it bring?

A

Maritime polar air masses bring cold and humid air.

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3
Q

What is a cP air mass? What weather does it bring?

A

Continental polar air masses bring cold and dry air.

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4
Q

What is a cT air mass? What weather does it bring?

A

Continental tropical air masses bring warm and dry air.

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5
Q

When you write the abbreviations for air masses, you capitalize the …

A

second letter (tropical or polar).

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6
Q

Can you identify all of the US states?

A

If not, go to https://www.geoguessr.com/vgp/3003

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7
Q

Are warm fronts represented by triangles or circles?

A

Warm fronts are represented by circles.

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8
Q

Are cold fronts represented by triangles or circles?

A

Cold fronts are represented by triangles.

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9
Q

How can you tell if a front is stationary?

A

A stationary front has

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10
Q

Can you read station models?

A

1-5
1(no)
5(yes)

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11
Q

Can you look at a weather map and forecast an area’s future weather based on the positions of highs/lows, fronts, clouds, and the general movement of our weather?

A

1-5
1(no)
5(yes)

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12
Q

What way does weather move?

A

It moves west to east.

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13
Q

Can you identify the location of fronts, air masses, and high and low-pressure areas on isotherm and isobar maps?

A

1-5
1(no)
5(yes)

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14
Q

What is an isotherm map?

A

An isotherm is a type of map that shows different temperatures using lines to connect areas of equal temperature.

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15
Q

Where do hurricanes form?

A

Hurricanes form over warm water regions(usually by equator). They form in late summer and early fall because the ocean is warmest then.

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16
Q

What causes the most damage in a hurricane?

A

The most damage is caused by storm surge. Due to the low pressure, water expands over the ocean, the strong winds push water over the top of itself, and the water goes onto land and can increase the sea level rapidly by up to 30 ft.

17
Q

Where do you get the most damaging winds in a hurricane?

A

The most damaging winds are found in the eye wall, which is right outside the center of the hurricane. The eye is relatively calm.

18
Q

What is the difference between a hurricane watch and warning?

A

A hurricane watch means that there is 24-36 hours before the hurricane hits, and a warning means there is less than 24 hours.

19
Q

How does a cold front form?

A

A cold front forms when colder air moves into a region of warmer air. The warmer air is forced upwards rapidly and cumulus and/or cumulonimbus clouds form. Short severe storms often happen.

20
Q

How does a warm front occur?

A

A warm front forms when warm air moves into a region of cold air. The warm air rises, and cools to form clouds. There is steady precipitation.

21
Q

How does an occluded front form?

A

An occluded front forms when a fast cold front overtakes a warm front and warm air is completely lifted off the ground.

22
Q

How does a stationary front form?

A

A stationary front forms when two air masses are headed towards each other and they do not displace each other. Winds blow parallel to the front.

23
Q

After a cold front passes the region, what is the temp. and pressure like?

A

The temp. decreases and the the pressure increases after a cold front passes.

24
Q

After a warm front passes the region, what is the temp. and pressure like?

A

The temp. increases and the the pressure decreases after a warm front passes.

25
Q

After an occluded front passes the region, what is the temp. and pressure like?

A

The temp. decreases and the the pressure increases after an occluded front passes.

26
Q

How does a thunderstorm form?

A

To start, warm moist air rises, then it cools and creates a cloud. A downdraft forms and creates precipitation and the cloud becomes cumulonimbus.

27
Q

How does lightning form?

A

Positive particles in the cloud are carried to the top and negative particles to the bottom. negative particles in the ground are repelled by the ones in the cloud and the positive particles are attracted. A string of negative particles called a step ladder head towards the surface and meets with an positive streamer. When the currents meet, a return stroke goes to the cloud and we see lightning.

28
Q

How does thunder form?

A

The heat caused by the lightning expands the air and cools air rushes in to replaces it.

29
Q

How and when does a tornado form?

A

They form when moist warm air meets cold air at the ground and a cold front forms. The warm air rises, and when it meets the cold air, it forms a thunderstorm. Jet streams creates a downdraft and makes the up and downdraft rotate. The rotating air within the storm funnels out and touches the ground and a tornado forms. Tornadoes mostly form in spring because there is the largest temp. difference between the air masses.

30
Q

Why does the polar front and jet streams matter to the formation of tornadoes?

A

Tornadoes form along the polar front because it has low pressure and jet streams. Jet streams make both the downdraft and updraft rotate, which causes the spiraling of a tornado.

31
Q

How do mid-latitude cyclones form?

A

To start, a stationary front forms. Then a wave develops (the front isn’t straight). The wave breaks into a cold and warm front. Lastly, an occluded front forms (3 sections, one with cold, one with occluded, one with warm).

32
Q

What is the difference between an anticyclone and a cyclone?

A

Anticyclones have clear skies, and sinking air, and are in high-pressure systems. In an anticyclone, surface air goes outward and clockwise in the northern hemisphere. Cyclones have cloudy skies, and rising air, and are in low-pressure systems. In a cyclone, surface air goes inward and counterclockwise in the northern hemisphere.

33
Q

What is a hurricane?

A

A hurricane is a powerful storm with high wind speeds(75+ mph), low pressure, and lots of precipitation. It is fueled by rising moist air and latent heat from condensation. It is usually in a mT air mass.

34
Q

What specific air masses affect the US?

A

cP Canadian, mP Atlantic, mT pacific, mT gulf, cT Mexican, mP Atlantic, mT Atlantic

35
Q

In a warm front, what is the cloud series that occur?

A

Cirrus to alto stratus to stratus to nimbo-stratus.

36
Q

What is an isobar map?

A

A map that connects places of equal barometric pressure.