Brainscape's Knowledge GenomeTM

Browse over 1 million classes created by top students, professors, publishers, and experts.


See full index

MAR 270 > Atmosphere > Flashcards

Atmosphere Flashcards

1
Q

What is atmosphere?

A

thin layer of homogeneous mixture of gases extending 90KM above Earth

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

What is the composition of air?

A

Nitrogen 78%
Oxygen 21%
Other 1%

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

What is density of air controlled by?

A

temperature
water vapor
altitude

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

What is the relationship between air temperature and density?

A

Warm air is less dense than cold air

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

What is the relationship between air humidity and density?

A

Humid air is more dense that dry air

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

What is the relationship between air compression and density?

A

more compression means more dense

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

What is atmospheric pressure?

A

pressure at any given point on Earth exerted by the atmosphere as a consequence of gravatational force exerted on the colum of air directly above.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

What is the average sea pressure?

A

1013.25 Milibars
14.7 lbs. in

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

What are low pressure zones?

A

density of air is less than average

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

What happens to air in low pressure zones?

A

Air rises

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

What are high pressure zones?

A

density of air is more than average

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

What happens to air in high pressure zones?

A

Sinks

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

Why does air move?

A

less dense air rises
more dense air sinks to Earth

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

Which way does Earth Rotate?

A

West ot East

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

How does latitude impact speed of rotation?

A

As latitude decreases, roation speed increases

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

What is the coriolis effect?

A

Force acting on a body in motion due to the rotation of the Earth causing deflection.

17
Q

How does the coriolis effect impact the hemispheres?

A

Earth Rotates to the **right **in the North hemisphere
and Left in the Southern hemispere

18
Q

What is deflection in relation to the coriolis effect?

A

amounts of deflected win is dependent on **speed **and location

19
Q

Which winds deviate the most?

A

polar, and fast winds

20
Q

Which wind deviates the least?

A

tropical, and slow winds

21
Q

How are winds named?

A

By the direction they are moving

22
Q

What are rising air areas?

A

Doldrums

23
Q

What are high pressure areas?

A

horse latitudes

24
Q

What is the ITCZ?

A

Intrtropical convergence zone

25
Q

What happens at the ITCZ

A

area of rising air and high atmospheric pressure near equator
Where wind systems of Northern and Southern Hemispheres converge

26
Q

What happens to land and ocean in summer months?

A

land is warmer than the ocean
low pressures develop global high pressure belt

27
Q

What happens to air in the summer?

A

moves away and deflects right.

28
Q

What happens to land and ocean during winter months?

A

land is colder than the ocean.
high pressure zones separate low pressure zones over water

29
Q

How does air move during winter months

A

Pulls in and deflects right

30
Q

How does air move when theres counterclockwise roation at low pressure?

A

Moves in and deflects right

31
Q

What are modern scale circulations?

A

rising air over land replaced by warm moist air
Carried on southwest winds from Indian ocean
Offshore airflow causes condensation

32
Q

What is rain shadow?

A

Mountains deflect wind upward:cools
riding on windward side of mountain; heavy precipitation
Descending air on leeward side: low precipitation

33
Q

What is an example of a small scale circulation pattern?

A

land sea breezes

34
Q

What are hurricanes?

A

tropical cyclonic storm wind speeds of 73 mph

35
Q

When do hurricanes occur?

A

tropical oceans when surface water temperature exceeds 28 celcius

36
Q

What is a storm surge?

A

elevation of sea surface beneath the center of a storm caused by low intense pressure

37
Q

What is a storm tide?

A

**max. sea surface elevation **when storm surge collides with high tide

MAR 270 (16 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2024 Bold Learning Solutions. Terms and Conditions