Climate Flashcards

(69 cards)

1
Q

determines the availability of thermal energy and water on Earth’s surface and influences the amount of solar energy that plants may harness

A

climate

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2
Q

climate is the __ __ __ of weather

A

long-term average pattern

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3
Q

climate may be __, __, or __

A
  • local
  • regional
  • global
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4
Q

travels more or less unimpeded through the vacuum of space until it reaches the Earth’s atmosphere

A

electromagnetic energy from Sun
(solar radiation)

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5
Q

how do scienctists characterize waves of energy

A
  • wavelength
  • frequency (v)
  • number of crests that pass a given point per second
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6
Q

electromagnetic spectrum division

A
  • ultraviolet
  • visible
  • near infrared
  • far infrared
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7
Q

ultraviolet

A

100-400 nm

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8
Q

visible

A

400-700 nm

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9
Q

near infrared

A

700-5000 nm

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10
Q

far infrared

A

5,000-100,000 nm

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11
Q

what is the wavelentgh of radiation emitted by an object

A

function of its temperature

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12
Q

surface temperature of the sun

A

5800 °C

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13
Q

average surface temperature of Earth

A

15 °C

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14
Q

expressed as a proportion of the shortwave radiation striking a surface that is reflected and differs for different surfaces

A

albedo

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15
Q

what is albedo

A

fraction of light that a surface reflects

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16
Q

difference between the amount of shortwave radiation absorbed by a surface and the amount of longwave radiation emitted back into space by the surface

A

net radiation

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17
Q

the net surface radiation from the equator towards the poles __

A

decreases

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18
Q

Two factors which affects net radiation

A
  1. higher latitudes - solar radiation hits surface at steeper angle spreading sunlight over larger area
  2. steeper angle = solar radiation penetrates deeper layer of air
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19
Q

Earth’s two distinct motions

A
  1. orbits Sun
  2. Rotates about an axis
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20
Q

brightness of day followed by darkness of night

A

diurnal cycle

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21
Q

solar radiation falls directly on the Tropic of Cancer, with increased input and day length in the Northern Hemisphere

A

Summer solstice June 22

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22
Q

solar radiation falls directly on the equator

A

Vernal and autumnal equinoxes

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23
Q

solar radiation falls directly on the Tropic of Capricorn, with increased input and day length in the Southern Hemisphere

A

Winter solstice December 22

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24
Q

As the Earth follows its elliptical orbit about the Sun, the location on the surface where the Sun is directly overhead at midday migrates between __ and __ over the course of the year

A

23.5° N
23.5° S

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25
warm air __
rises
26
why does warm air rise
less dense
27
cool air __
sinks
28
why does cool air sink
denser
29
where does the air heated rise to
troposphere
30
the low atmospheric pressure at the surface causes air to what?
air from north and south to flow towards the equator
31
air moves from areas of __ __ to __ __
higher pressure to lower pressure
32
resulting convergence winds from the north and south in the region of the equator
intertropical convergence zone (ITCZ)
33
air spirals upwards __ at low levels
anticlockwise
34
air spirals out __ at low levels
clockwise
35
day time
sea: cool air land: warm air
36
night time
sea: warm air land: cool air
37
refers to the apparent deflection of objects (such as airplanes, wind, missiles, and ocean currents) moving in a straight path relative to the Earth's surface
The Coriolis effect
38
each ocean is dominated by two grat circular motions, or __
gyre
39
direction of ocean movement in northern hemisphere
clockwise
40
direction of ocean movement in southern hemisphere
counterclockwise
41
along the equator, where does the wins push warm surface water?
westward
42
systematic patterns of water movement
currents
43
zone of low pressure (the subpolar low) where surface air converges and rises
polar front
44
band of low pressure located, in the mean, between 50° and 70° latitude
subpolar low
45
winds that reliably blow east to west just north and south of the equator
trade winds
46
maintain the South Equatorial Current, which flows toward the west where it divides into two branches
southeast trade winds
47
trade winds that blow from the northeast in the northern hemisphere
northeast trade winds
48
plays a crucial role in the exchange of water between the atmosphere and Earth's surface
air temperature
49
when is energy either abosrbed or released
whenever matter changes from one state to another
50
transformation of water from liquid to gas
evaporation
51
energy required to change liquid water to water vapor
2,260 Joules/g
52
if the air cools to a point where the actual vapor pressure is equal to the saturation vapor pressure, what happens to the moisture in the air?
condense
53
- measurement of the amount of water vapor in a volume of air - increases as the amount of water vapor increases
Actual vapor pressure
54
- pressure of a vapor which is in equilibrium with its liquid (as steam with water) specifically - maximum pressure possible by water vapor at a given temperature
saturation vapor pressure
55
when does water condense and dew forms?
air temperature reaches dew point
56
what happens to the water in air when dew are formed?
decreases
57
as the sun rises, what happens to the saturation vapor pressure?
increases
58
directly linked to the seasonal changes in the surface ration balance and its effect on the movement of global pressure systems and air masses
temporal variation
59
line of latitude approximately 23°27′ north of Earth's Equator
Tropic of Cancer
60
lies at 23d 26' 22" (23.4394 degrees) south of the Equator
Tropic of Capricorn
61
side of the mountain which supports denser, more vigorous vegetation and different speacies of plants and associated animals
windward side
62
phenomemnon where one side (windward) of the mountain is abundant in life while the other side (leeward) is arid and dry
rain shadow
62
most organisms live in local conditions that do not match the __ __ __ of the larger region surrounding them
general climate profile
62
side of the mountain which is dry, desert-like conditions exist
leeward side
63
what influences the local climatic conditions
topography, particularly the direction that a slope faces
64
in the northern hemisphere, what slope receives the most solar energy
south-facing slopes
65
examples of slopes that have the same microclimatic conditions on north- and south-facing slopes
1. large ant hills 2. mounds of soil 3. dunes 4. small ground ridges in otherwise falt terrain 5. buildings 6. trees 7. logs
66
where do microclimatic extresmes also occur
- depressions in the ground - concave surface of valleys
67
smaller area that differs from the surrounding macroclimate
microclimate