Topic 2 -Environmental Heterogeneity Flashcards

1
Q

Climate

A

long term average patterns of weather on a local, regional or global scale

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2
Q

Weather

A

is the combination of temperature, humidity, precipitation, wind and cloudiness at a specific place and time

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3
Q

All the differences in climate across the earth are driven primarily by

A

solar radiation

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4
Q

The ability to sustain life on our planet is due to the

A

sun

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5
Q

The sun is our main source of _______ with only ____reaching the surface and being absorbed

A

energy, 51%

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6
Q

Absorbed energy is remitted as

A

heat

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7
Q

Green house effect

A

is crucial to maintaining the surface warmth

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8
Q

Solar energy intercepted by the earth decreases toward the_______ and increases towards _______

A

poles, equator

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9
Q

Uplift

A

warm air rises in the tropics, condenses into clouds and precipitates, cooling air forced North and South

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10
Q

cooling air from the tropics meets air moving southward from the poles resulting in

A

subsidence which is when air moves back to the earths surface when temperature gradient equalizes

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11
Q

where does subsidence occur

A

at the poles where air is dry or between the hadley and ferrell cells 30 degrees of latitude

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12
Q

Hadley Cell

A

0-30 degrees tropical

formed from uplift at the equator

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13
Q

Polar Cell

A

60-90 degrees polar

formed by subsidence at the poles

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14
Q

Ferrell cell

A

30-60 degrees temperate

circulates air between and closes off the other cells

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15
Q

Atmospheric circulation is linked to

A

wind currents

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16
Q

Corliolis Effect

A

apparent deflection of wind currents from earths perspective
right in northern hemisphere
left in southern hemisphere
viewed from space wind would move north-south

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17
Q

Global winds create

A

ocean currents, continents obstruct

18
Q

Currents tend to move clockwise in the__________and counter clockwise in the___________

A

Northern hemisphere, southern hemisphere

19
Q

warm currents tend to move from the_____ outwards while cool currents originate from the _____ regions

A

tropics, polar

20
Q

ocean currents are the main

A

thermal conveyors of the planet

21
Q

3 major influences that alter global temperature

A

Distribution of land and water
Elevation
Earths orbit around the sun

22
Q

true or false

water is a better heat sink than land and retains heat longer

A

True

23
Q

True or false

type of Vegetation cover of land does not influence heat uptake

A

False

24
Q

Albedo

A

amount of solar radiation that a surface reflects

25
Q

True or false

Internal continental areas are less affected by the heating and cooling of ocean currents

A

True

26
Q

Precipitation tends to be _____ in the southern hemisphere relative to the north because__________

A

Higher, larger surface area of water

27
Q

topography (mountains) can create

A

rain shadows, the air cools before getting over the mountain

28
Q

deep continental areas become very dry due to long distances from

A

water bodies

29
Q

air temperature decreases with

A

elevation

30
Q

warming effect of earths surface decreases with

A

elevation

31
Q

greater air pressure at the surface causes molecules to move

A

faster (higher speed= higher temp)

32
Q

Tilts of the earths axis results in

A

seasonal temperature differences as it orbits the sun

33
Q

May to august the northern hemisphere is tilted

A

toward the sun, increased solar radiation results in winter, opposite in southern hemisphere

34
Q

Nov to Feb the northern hemisphere is tilted

A

away from the sun resulting in winter, opposite in southern hemisphere

35
Q

because of tilt, seasons are restricted to

A

temperate zones

36
Q

because of the tilt away from the sun, polar areas experience extreme

A

day night cycles

37
Q

because of tilt, tropical areas experience a shift in the _________ and experience ___________

A

Intertropical convergence zones (ITCZ), wet dry cycles

38
Q

weather patterns have different spatial scales which are

A

Global
Regional
Local
Micro

39
Q

Global and regional climate patterns determine the

A

large scale distribution of plants and animals

40
Q

do local climate conditions match the general climate profiles of the larger region?

A

No

41
Q

local patterns of microclimate are the actual environmental conditions experienced by

A

organisms