MIDTERM 1 Flashcards

1
Q

What are the 6 sub disciplines of geography developed by Immanuel Kant?

A

Physical
Mathematical
Moral
Political
Commercial
Theological

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2
Q

The Quantitative Revolution

A

measurement became central focus of research in physical geography

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3
Q

The 4 academic traditions of geography

A

Spatial
Area Studies
Human-Land
Earth Science

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4
Q

5 themes of modern geography

A

Location
Region
Human-land tradition
Movement
Place

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5
Q

System

A

any ordered interrelated set of things and their attributes linked by flows of energy and matter as distinct from the surrounding environment outside the system

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6
Q

The 3 types of systems

A

isolated
opened
closed

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7
Q

Closed system example

A

earth systems in terms of matter and resources (no new nothing has entered earth)

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8
Q

Open system example

A

photosynthesis

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9
Q

The 2 kinds of feedback loops

A

Positive
Negative

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10
Q

negative feedback loop

A

new information discourages response in a system
ex. more lynx in populations means less hares in a population

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11
Q

Positive feedback loop

A

new information increases response in system
ex. ice albedo loop:

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12
Q

steady state equilibrium

A

Rates of system where input/outputs are equal, and amount of material in system is more constant over time

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13
Q

dynamic equilibrium

A

The state of natural systems oscillates around a mean condition, but will trend over time (will stay the same, but on a trend)

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14
Q

nebula hypothesis

A

spinning mass makes one plane, gravity forms protosun, accretion forms planets

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15
Q

what is our knowledge of the universe based on?

A

optical and radio telescopes

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16
Q

3 components the Milky Way is compromised of

A

disk
nuclear buldge
halo

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17
Q

Disk

A

Plane of rotation consisting of young stars, globular clusters, gas and dust

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18
Q

Nuclear bulge

A

dense mass of young and old stars

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19
Q

Halo

A

Thin cloud of stars

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20
Q

What components made up the early atmosphere?

A

H2O
HCN
NH3
CH4
S

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21
Q

What new components made up the second atmosphere?

A

CO2
N2

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22
Q
A
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23
Q

What caused an increase in O2 into atmosphere from 1% to 21%

A

Development of evolution and growth of life

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24
Q

The 4 “spheres” of earth

A

Lithosphere/geosphere
Atmosphere
Hydrosphere
Biosphere

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25
Q

Lithosphere/geosphere

A

The rocky group of earth
Consists of 3 components:
-igneous
-sedimentary
-metamorphic

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26
Q

Atmosphere

A

gaseous envelope of air that surrounds earth
where weather occurs

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27
Q

Water moves around earth by what processes?

A

Evaporation
condensation
Run-off
precipitation
Infiltration
Groundwater flow

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28
Q

Biosphere

A

contains all living things

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29
Q

What is responsible for diversity and complexity in living things?

A

Evolution

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30
Q

2 types of energy

A

Kinetic
Potential

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31
Q

7 different forms of energy

A

Heat
Electricity
Sound
Energy of chemical reactions
Magnetic attraction
Energy of atomic reactions
Light

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32
Q

What are the 3 ways energy can be transferred?

A

Conduction
Convection
Radiation

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33
Q

Conduction

A

Energy transferred directly from molecule to molecule; represents flow of energy along temp gradient

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34
Q

Convection

A

Transfer of energy by vertical mass motions of a gaseous/liquid medium

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35
Q

Radiation

A

Emission/propagation of energy in form of electromagnetic waves

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36
Q

What is the biggest form of energy transfer on earth

A

radiation

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37
Q

radioactive decay

A

loss of subatomic particles from an atom

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38
Q

ions

A

elements with a + or - charge

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39
Q

molecules

A

structures of matter larger than 1 atom

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40
Q

compounds

A

different elements joining together

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41
Q

The other 4 states of matter

A

Plasma
Supercooled liquid (glass)
Supercritical fluid
Bose-einstein condensate

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42
Q

what 2 forms can matter be found in

A

Organic
Inorganic

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43
Q

examples of organic compounds

A

Lipids
Carbs
Proteins
Nucleic acids

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44
Q

what organic compound is found in the hydrocarbon family?

A

Lipids/fats

45
Q

What atoms make up carbohydrates

A

carbon
oxygen
hydrogen

46
Q

What atoms make up proteins

A

nitrogen
carbon
hydrogen
minor elements

47
Q

what atoms make up nucleic acids

A

carbon
hydrogen
nitrogen
oxygen
phosphorus

48
Q

what do you get when you package together the 4 organic compounds

A

a cell

49
Q

where do the processes of metabolism and hereditary occur?

A

inside a cell

50
Q

prokaryotes

A

The simple organisms
-Bacteria
-archaea
-cyanobacteria

51
Q

eukaryotes

A

Cells of plants and animals are complicated in structure/function

52
Q

what forms of energy do organisms use to create sugars fats and proteins

A

chemical
light

53
Q

tissue

A

group of cells that have become specialized to perform a certain function

54
Q

3 properties of matter

A

Volume
mass
density

55
Q

Langley

A

intensity of radiation measured per minute and equal to one calorie

56
Q

Watt

A

measurement of intensity of radiation over a square metre surface; 1 watt is equal to 1 joule of work/sec

57
Q

heat

A

energy transferred between objects

58
Q

heat capacity

A

ratio of amount of heat energy absorbed by that substance to corresponding temperature rise

heat energy absorbed:temperature rise

59
Q

specific heat

A

heat capacity of unit mass of substance or heat needed to raise temp of 1g of substance 1 degree celsius

60
Q

sensible heat

A

heat that can be measured by a thermometer ; sensed by humans

61
Q

latent heat

A

energy required to change a substance to a higher state of matter

62
Q

specific heat example

A

water heating up slower than land, water cooling of slower than land

63
Q

The capture and use of energy in living systems is dominated by what?

A

photosynthesis
respiration

64
Q

Field of thermodynamics

A

studies the behaviour of energy flow on natural systems

a number of physical laws have been established from this

65
Q

The 3 laws of thermodynamics
(and 4th)

A
  1. energy cannot be created or destroyed
  2. Natural processes involving energy transfer only have 1 direction
    3.No kinetic energy, we reach a state called absolute zero
  3. law of temp and thermal equilibrium:
    Allows us to define temperature scales and thermometers
66
Q

3 different types of radiation

A

Infra-red radiation
Microwaves
X ray radiation

67
Q

what radiation makes up 48% of light

A

infrared

68
Q

what type of radiation makes up 7% of the suns emissions

A

ultraviolet

69
Q

Amount of electromagnetic emission emitted by a body is directly related to what?

A

Temperature

70
Q

What creates heat energy? (atomic level)

A

Absorption of photon by an atom

71
Q

Wien’s law

A

Wavelength of maximum emission of any body is inversely proportional to its absolute temperature

72
Q

Inverse square law

A

as radiation travels away from a body its intensity decreases exponentially

73
Q

Almost all energy that drives systems found on earth originate from what?

A

Sun

74
Q

solar flares

A

giant ejection of gases from the sun

75
Q

How are earths seasons controlled?

A

changes in duration and intensity of solar radiation/insolation

76
Q

angle of incidence

A
77
Q

how is nitrogen created in the atmosphere

A

lightning through precipitation

nitrogen fixing bacteria

78
Q

How is oxygen moved throughout the earth/atmosphere

A

photosynthesis/respiration

79
Q

what is the 5th most abundant gas in the atmosphere

A

carbon dioxide

80
Q

primary sources for methane that exists in the atmosphere

A

rice cultivation, domestic grazing animals, termites, landfills, coal mining, oil/gas extraction

81
Q

Sources that increase nitrous oxide in atmosphere

A

Land use conversion, fossil fuel combustion, biomass burning, soil fertilisation

82
Q

Aerosols

A

small solid particles and liquid droplets in the air

83
Q

The 4 layers of earth

A

troposphere
stratosphere
mesosphere
thermosphere

84
Q

where does most weather occur?

A

troposphere

85
Q

what layer is 80% of earths mass

A

troposphere

86
Q

environmental lapse rate

A

air cools 6.5 celsius per 1000m

87
Q

0-11km from earths surface

A

troposphere

88
Q

11-50km earths surface

A

stratosphere

89
Q

why does temp increases with altitude in stratosphere?

A

O3 concentrations

O3 molecules absorb ultraviolet sunlight creating heat energy

90
Q

50-80km above earths surface

A

mesosphere

91
Q

what is the coldest layer in the atmosphere?

A

mesosphere

92
Q

what layer of earths surface is the last of the homosphere?

A

mesosphere

93
Q

over 1000km above earths surface

A

thermosphere

94
Q

what is the hottest layer in the atmosphere?

A

thermosphere

95
Q

what influences all atmospheric processes?

A

gravity

96
Q

what happens to density and pressure of air as you move away from earths surface?

A

decreases

97
Q

atmospheric pressure

A

weight of the atmosphere

98
Q

instrument that measures air pressure

A

barometer

99
Q

3 atmospheric processes that modify solar radiation

A

Scattering
Absorption
Reflection

100
Q

scattering

A

Small particles of gas molecules diffuse incoming radiation without altering the wavelength

dependent on:
wavelength of radiation
size of particles

101
Q

absorption

A

A process where solar radiation is retained and converted into heat energy

102
Q

reflection

A

sunlight is redirected 180 degrees (sent straight back)

103
Q

what causes our skies to look blue

A

scattering of solar radiation particles

104
Q

what is the reflectivity of a cloud

A

40-90%

105
Q

what atmospheric process causes 100% loss in insolation

A

reflection

106
Q

Direct solar radiation

A

sun reaching earth’s surface

107
Q

Diffused solar radiation

A

radiation that reaches earth’s surface after layered by process of scattering

108
Q

how much energy taken in by the sun can actually do work

A

50%

109
Q

What produces specific patterns of insolation receipt?

A

Combined effect of earth-sun geometry and the atmosphere modification