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PLANET EARTH EXAM I > chapter 7 > Flashcards

chapter 7 Flashcards

1
Q

What is convergent lifting?

A

low P, rising on a cloud

**ex.) ITCZ, Lows(cyclones)

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2
Q

What is Convectional Lifting?

A

Warm Air Rising up

**ex.)dark surfaces,wild fires

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3
Q

What is lifting condesation?

A

When warm air rises, to cloud joins it, then goes back down. Cycle Repeats

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4
Q

What does Orographic Lifting produce?

A

Rain in windward side
Rain shadow in leeward side
chinook winds on leeward side

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5
Q

For Orographic Lifting, what is on the left side?

A

Windward Side
Rain

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6
Q

For Orographic Lifting, what is on right side?

A

Leeward Side
“rain shadow”
“chinook” winds

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7
Q

`

What are the two types of Frontal Lifting?

A

Cold Fronts
Warm Fronts

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8
Q

Describe Cold Fronts

A

Blue triangles
forces warm air up
400km

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9
Q

Describe Warm Fronts

A

Red Semi-Circles
Warm Air moves up, over cold
1000km

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10
Q

Source Region=?

A

Large,flat,homogenous

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11
Q

Define Air Masses?

A

homogeneous body of air that takes the temp and moisture

***taken by SOURCE REGION

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12
Q

What is a good source region?

A

Ocean,deserts,plains, tropics, artic

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13
Q

What is a bad source region?

A

mountains
midlatitudes

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14
Q

What are the different types of humidity?

A

m = maritime
c = continental

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15
Q

What are the different types of Temp?

A

A = Artic
P = Polar
T = Tropical

***E= eqatorial ; AA = Antartic

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16
Q

How does an Occluded Front look like?

A

The blue triangles are facing up.
Red Starts first

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17
Q

How does a stationary front look like?

A

Blue Triangles are facing down
Red starts first

18
Q

Define cyclone?

A

Area of Low P with converging and rising air

19
Q

“Wave” Cyclones are called like that bc?

A

They travl westerly across US in waves

20
Q

How many stages does a midlatitude cyclone develop?

A

4

21
Q

Describe the Midlatitude Cyclone

A

1.) Cyclogensis( started as a stationary front)
2.) Open Stage
3.) Occluded Stage(cold front caugh up)
4.Dissolving Stage (area is warm)

22
Q

What are the types of Severe Weather?

A

thuderstroms
tornadoes
tropical cyclones

23
Q

Where do thunderstroms develop?

A

wamr/moist air
along cold fronts
orographic lifting

24
Q

What are the three stages of thuderstroms?

A

1.) develop(cumulus)
2.) mature (precipation starts)
3.) dissipating

25
Q

Hailstones, describe?

A

Strong warm air rises, cools downs goes to back. Hail Shower

26
Q

Describe tornadoes?

A

form in severe thunderstorms
100m of diameter
winds up tp 300mph
45-55 mph speed
path length 7m

27
Q

FujitaScale

69%

A

Weak

28
Q

Fujita Scale

29%

A

Strong

29
Q

Fujita Scale

2%

A

Violent

30
Q

Describe tornado Formation

A

Top- Strong Wind
spinning along horizontal
bottom- weaker wind

31
Q

Where do the tropical cyclones happen?

A

Tropic of Cancer & Capricon

32
Q

How do Tropical Cy. form?

A

Easterly Waves
5-30 degrees
*No warm/cold fronts
*No differing air masses

33
Q

What are easterly waves?

A

“Bumps” in Trade Winds

34
Q

Describe Easterly Wave?

A

Convergence
*Rising Air
* Thuderstorms

35
Q

Where do Hurricanes most occur?

A

Atlantic
east pacific

36
Q

Where do typhoons occur?

A

west pacific

37
Q

where do cyclones occur?

A

indian ocean
south pacific

38
Q

Describe Hurricanes?

A

100-600 diameter
last ~1 week
move 10-25 mph
Strong Low P
Forms in tropics (26.5degrees)
Die over land or cool ocean

39
Q

describe the featues of hurricanes?

A

inward rising air
eye is driest part(weak air)
eye 10-25 diameter

40
Q

What are the impacts of Hurricanes

A

Flooding
High Winds
Tornadoes(weak can form)
Strom Surge(rise of sealevel water)

PLANET EARTH EXAM I (7 decks)

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