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Geography a level Edexcel > Paper 1 Physical > Flashcards

Paper 1 Physical Flashcards

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1
Q

Submergent coastline? (3)

A

formation of rias, fjords and Dalmation coasts

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2
Q

Emergent coastline features ?

A

formation of raised beaches and fossil cliffs by isostatic rebound

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3
Q

Characteristics of high energy coasts? (4)

A

10-15 waves per minute, destructive waves, long fetches and high rates of erosion.

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4
Q

Land formation on high energy coasts? (2)

A

Cliffs, wave cut platforms

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5
Q

Singapore water management explanation?

A

5 desalination plants accounting for 25% of water demand, recycle dirty water (NEWater) and rainwater harvesting

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6
Q

Concordant coastlines?

A

alternating hard and soft rock aligned parallel to the coast

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7
Q

discordant coastline?

A

alternating hard and soft rock perpendicular to the coast

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8
Q

What does climate change do to ocean water?

A

Thermal expansion of existing ocean water meaning space of water increases

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9
Q

What is over abstraction?

A

More water taken then replenished by precipitation

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10
Q

Isostatic change?

A

Change in level of land when melting of ice causes land to rebound

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11
Q

Eustatic change?

A

Rising and falling of sea level water

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12
Q

What are physical factors which cause erosion on the Holderness coast?

A

Lithology (soft boulder clay, porous rocks), destructive waves, long fetch, strong lsd that removes sediment

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13
Q

Negative feedback?

A

Change produced creates effects that operate to reduce or work against original change.

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14
Q

Definition of Carbon fluxes?

A

Transfer of carbon from one store to another measured in petagrams

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15
Q

Stores?

A

Adding and removing carbon from the atmosphere.

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16
Q

Major fluxes? (2)

A

Oceans and atmosphere and land and atmosphere via photosynthesis and respiration.

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17
Q

Ways carbon is release? (2)

A

Volcanic outgassing, chemical weathering of rocks

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18
Q

Explain formation of sedimentary carbonate rocks?

A

phytoplankton and coral absorb carbon dioxide which is dissolved in the sea water and their remains collect on the seabed and get compressed by the layers above them and cemented

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19
Q

Deposition definition?

A

When waves loose energy and let go of material

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20
Q

what is phytoplankton?

A

microscopic plants which float on the ocean surface and consume carbon dioxide from the atmosphere during the process of photosynthesis.

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21
Q

Definition of energy security?

A

ensuring energy supply meets current and future demand

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22
Q

Examples of energy pathways? (5)

A

pipelines,roads, rails, transmission lines, shipping routes

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23
Q

Why does the Uk have an energy defecit?

A

Because it imports more energy than it domestically produces

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24
Q

What is the effect of more co2 in the atmosphere? (4)

A

A rise in mean global temperatures, more extreme weather patterns, sudden shifts in weather patterns, more precipitation and evaporation

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25
Q

Carbon sources?

A

Adding carbon to the atmosphere

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26
Q

Carbon sinks?

A

Removing carbon from the atmosphere

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27
Q

What happens to carbon when plants and animals die?

A

Carbon is released back into the atmosphere

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28
Q

Atmosphere?

A

contains carbon dioxide and compounds such as methane

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29
Q

Hydrosphere?

A

As dissolved carbon dioxide

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30
Q

Biosphere?

A

Carbon In living and dead organisms

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31
Q

Lithosphere?

A

As carbonates in limestone and fossil fuels e.g (coal,oil and gas)

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32
Q

What is Volcanic outgassing?

A

When volcanic activity causes carbon trapped in pockets of the earth’s crust to be released into the atmosphere.

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33
Q

Where does outgassing take place?

A

Volcanic zones, fractures in the Earth’s crust

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34
Q

Definition of carbon sequestration?

A

Transfer of carbon from the atmosphere to any other store

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35
Q

Example of carbon sequestration?

A

When plants photosynthesise and stores carbon in its mass

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36
Q

What is the largest carbon store on the Earth?

A

Oceans, 93% of carbon is stored underwater in algae, corals, plants and in dissolved form

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37
Q

Definition of thermohaline circulation?

A

The system of surface and deep ocean water currents driven by temperature and salinity differences

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38
Q

3 carbon cycle pumps?

A

Carbonate pump, biological pump and physical pump

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39
Q

Definition of carbon cycle pumps?

A

Processes at work to circulate and store carbon.

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40
Q

How does the biological carbon pump work?

A

Phytoplankton sequesters carbon from the surface of the ocean and converts co2 into organic matter. As the organisms die they sink into the deeper ocean and decay releasing co2 into the deeper ocean.

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41
Q

What is the carbon cycle?

A

Regulates global temperature and climate by controlling the amount of co2 in the atmosphere

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42
Q

Why is consumption of energy increasing?(2)

A

Population is growing and countries are becoming more developed and have better standards of living

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43
Q

Renewable energy examples?(4)

A

solar, hydroelectricity, wind and geothermal

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44
Q

Non renewable energy examples? (3)

A

fossil fuels (oil, natural gas and coal)

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45
Q

What is the energy mix for developing countries mostly made up of?

A

Recyclables such as biomass and general waste as it is cheap

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46
Q

Factors affecting access and consumption of energy?(6)

A

cost, technology, physical availability, climate, level of economic development and environmental priorities

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47
Q

Definition of secondary energy?

A

Energy that has been converted from primary energy (electricity)

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48
Q

Definition of primary energy?

A

Energy found in nature which has not been converted (wind)

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49
Q

5 energy players?

A

TNC’s, OPEC, government, consumers and energy companies

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50
Q

2 largest consumers of coal?

A

China and USA

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51
Q

Energy pathway for gas and oil?(2)

A

Pipelines and tanker ships

52
Q

Constructive waves characteristics?(4)

A

Stronger swash than backwash, more deposition then erosion, frequency of 6-8 waves per minute, lower energy waves

53
Q

Explain one depositional processes?

A

Constructive waves loose energy and release sediment and have stronger swash than backwash which creates beaches.

54
Q

2 physical reasons why places are more at risk to flooding?

A

removal of vegetation and low lying countries

55
Q

2 economic reasons coastal recession is significant?

A

houses at risk creating homelessness and tourism can be affected

56
Q

What coastal landforms does erosion create?(4)

A

cliffs, wave cut notches and platforms and caves

57
Q

What does isostatic rebound do?

A

When ice sheets melt causing less weight on the land therefore a rise in land level locally and a fall in sea level locally.

58
Q

Sediment cell?

A

A linked system of sources, transfers and sinks

59
Q

Low energy coastlines? (3)

A

Deposition exceeds erosion, low energy waves, beaches, spits and coastal plains

60
Q

Inputs of coastal system?(4)

A

People , rock type/structure, weather/ climate change, waves/ tides

61
Q

Coastal system processes?

A

Weathering, mass movement, erosion, deposition and transport

62
Q

3 things the ICZM considers the implications of?

A

social, economic and environmental causes

63
Q

4 types of drought?

A

meterological, agricultural, socio-economic and hydrological

64
Q

Human factors affecting water insecurity?

A

Population growth leading to a mismatch in demand for the water and supply

65
Q

What can water scarcity lead to?

A

environmental damage, reduce economic development and threaten water supplies

66
Q

Impacts of drought on forest ecosystems?

A

less canopy cover as younger trees die, leading to less interception and infiltration, leading to less evaporation

67
Q

meteorological causes of flooding? (4)

A

Flash floods, monsoon rainfall, snowmelt, la nina (brings warm water and cool air masses creating more precipitation in Australia.

68
Q

Effects of flooding on soil?(2)

A

erodes fertile soil (Amazon), sediment can block sections of the river

69
Q

Effects of flooding on ecosystems? (4)

A

destroys agricultural land leading to ruined harvest, different animal species migrate, habitat loss, uproots and breaks plants

70
Q

Hydrological cycle inputs? (6)

A

interception, vegetation storage, surface storage, soil moisture, groundwater storage and channel storage

71
Q

Flows in a hydrological cycle?(6)

A

infiltration, throughflow, stem flow, percolation, channel flow and surface run off

72
Q

Outputs of a hydrological cycle? (4)

A

evaporation, evapotranspiration, transpiration and river discharge

73
Q

What is the effect of El Nino?

A

occurs every 2-7 years, Peru sea temperature rises to 6-8 degrees causing thermal expansion and sea level rise. Water near Indonesia and Australia temperature cools, causing less precipitation leading to droughts in Australia.

74
Q

Difference between economic and physical water scarcity?

A

Economic- water is readily available but lack the infrastructure
physical- mismatch between demand and supply

75
Q

Physical causes of water insecurity?

A

Salt water encroachment- sea level rising
climate variation- drought

76
Q

Human causes of water insecurity?

A

over abstraction, industrial pollution and water contamination from agriculture

77
Q

Water stress and scarcity difference?

A

Scarcity- below 1000m^3 stress- below 1700m^3 per person

78
Q

Transboundary conflict example?

A

River Nile- Ethiopia constructing a DAM which will affect downstream countries (Egypt and Sudan) - Egypt 90% reliant on nile for water

79
Q

Hazard definition?

A

natural/geophysical event that threatens people and property

80
Q

Slab pull definition?

A

At convergent plate boundaries the high density ocean floor is being dragged down by a gravitational force

81
Q

Features of divergent plate margin?(4)

A

Basaltic eruptions, low magnitude and viscosity lava and shallow focus earthquakes

82
Q

Collision plate margin?(3)

A

creates fold mountain, high magnitude shallow earthquakes, no volcanoes

83
Q

Conservative plate margin?(3)

A

Plates slide past each other, no volcanoes infrequent high/low magnitude earthquakes

84
Q

Convergent plate margin?

A

fold mountains, high magnitude earthquakes and volcanoes

85
Q

S waves causes?

A

Causes the ground to shake after the earthquake

86
Q

L waves?

A

large amplitude and cause crustal fracturing

87
Q

Primary hazards of earthquakes?

A

ground shaking, crustal fracturing

88
Q

Secondary hazards of earthquakes?

A

liquefaction, landslides and tsunami

89
Q

Primary hazards of volcanoes?(4)

A

tephra, lava flows, volcanic gases and pyroclastic flows

90
Q

Factors affecting capacity to cope?(3)

A

emergency evacuation, education, land use planning

91
Q

Ways to measure intensity of an Earthquake?

A

MMS, mercalli scale

92
Q

Vulnerability definition?

A

How susceptible a population is to damage caused by a hazard

93
Q

Factors that affect communities vunerability?(3)

A

economic development, population density, physical location

94
Q

Hazard risk equation?

A

Risk= Hazard* vulnerability/capacity to cope

95
Q

Developing vs emerging country earthquake social impacts?

A

Haiti-300k deaths, Christchurch-181 deaths Less technology in Haiti (aseismic buildings)

96
Q

Stores of water?

A

soil water, groundwater, interception, surface storage and the oceans.

97
Q

Factors affecting the shape of storm hydrographs?

A

rock type, soil, relief and vegetation, land use zoning and urbanisation

98
Q

Human activities affecting drought risk?

A

Over abstraction of ground and surface water, deforestation and climate change

99
Q

Where are highest magnitude earthquakes found?

A

Near subduction zones and convergent plate margins

100
Q

Major stores of carbon?

A

oceans, atmosphere, biosphere and lithosphere

101
Q

Terrestrial sequestation?

A

Uses plants to capture co2 from the atmosphere and store it in its leaves (short scale)

102
Q

What factors increase pressure on water resources?

A

population growth, improving living standards (economic growth)

102
Q

Thermohaline circulation?

A

Pumps dissolved carbon and sediment around the ocean. (Holds 50 more times the amount of CO2 as atmosphere)

103
Q

Global hydrological system definition?

A

The continuous movement of water on, below and above the Earths surface

104
Q

Give 3 examples of how water is recycled throughout the system?

A

Evaporation, condensation and flows (water running off into groundwater flows)

105
Q

Physical factors affecting the drainage basin?(5)

A

relief, geology, vegetation, soils and climate

106
Q

What is agricultural drought?

A

When there is water deficiency in the soil leading to crop failure and reduced biomass.

107
Q

What is hydrological drought?

A

Lack of water stored on the surface and underground

108
Q

Causes of water scarcity?(5)

A

Physical (salt water encroachment, variation in climate), human- (over abstraction, industrial pollution and water contamination)

109
Q

3 reasons for importance of water supply?

A

Domestic use, agriculture and industry and energy

110
Q

Examples of hard engineering water management schemes?(3)

A

Desalination plants, mega dams and water transfer schemes

111
Q

cons of desalination plants?(2)

A

cons- Expensive and uses vast amounts of energy

112
Q

Cons of dams?(3)

A

Expensive to implement, affects ecosystems downstream as it reduces water flow, relocation of people for it to be built

113
Q

Examples of sustainable water schemes?(3)

A

smart irrigation, rainwater harvesting, filtration

114
Q

Example of a place with desalination plant?

A

Singapore has 5 accounting for 25% of its demand

115
Q

Factors which affect prices of water?(5)

A

government policies, privatisation, investment in infrastructure, demand, cost of obtaining water supply

116
Q

3 types of carbon cycle pumps?

A

biological, carbonate and physical pump

117
Q

Physical pump explanation?

A

Downwelling currents bring carbon to deep ocean floor

118
Q

How does vegetation help to stabilise coastlines?(3)

A

Plant roots bind soil and sand together reducing erosion, wind erosion reduced increasing deposition and dead plant material adds matter forming soil

119
Q

When does energy security increase for a country?

A

When dependence on imported energy decreases

120
Q

Factors affecting access to and consumption of energy?(5)

A

Physical availability, cost, technology, level of economic development and environmental priorities

121
Q

Costs of unconventional fossil fuels?(3)

A

Requires lots of energy and water (very expensive), can cause contamination of water, oil spills and land subsidence

122
Q

Pros of conventional fossil fuels?

A

Provides jobs and boosts the local economy, greater energy security, provides a source of fuel whilst renewable energy is developed

123
Q

Difference between magnitude and intensity earthquakes?

A

Magnitude is the amount of energy released whereas intensity is the severity of ground shaking at a different place

124
Q

Factors which influence vulnerability and resilience

A

Isolation/accessability, inequality to education, housing, healthcare and degree of urbanisation

Geography a level Edexcel (2 decks)

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