Flashcard Set Preview
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| 1 |
Name the 4 main sources of water.
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Sea WaterRiversReservioursAquifers
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| 2 |
What happens when an Aquifer is overworked?
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Salt water IncursionCollapsationDrying of Wet LandsReduced water to RiversReduced Supplies
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| 3 |
What are the main features of an Aquifer?
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Impermiable rock on the bottomSome permiable rockPorosity or rock used as a measure of space
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| 4 |
Why is seawater an inpractical water resource?
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It is saltyDesalination is very expensiveDesalination works by reverse osmosis, forcing the...
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| 5 |
What are the factors affecting a Reserviour?
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Existing land useTopography-costGeology-rock typeCatchment areaPollution risk
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| 6 |
Factors of Rivers
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Long and widely accessibleSelf cleaningShort Residence time
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| 7 |
What are the factors causing a change in the demand for water?
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IndustrialisationIndustry and Population growthChanges in altitudeChanges in living standardMigration
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| 8 |
INCREASING AVAILABILITY OF WATER
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Water butts and recyclingPreventing pollution,Better distribution-fix pipes, turn taps offINTERBASIN...
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| 9 |
What affects the Global Water supply demand?
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MDCs are likely to want more as they can afford to expoit the water and irrigate it.LDCs can't...
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| 10 |
What are the factors that change the demand for water?
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Increase in living standard,Increase in populationMigrationGrowth of industry.
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| 11 |
Effects of UVB
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Damage DNACause CataractsDamages PlanktonAbsorbed by living cells
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| 12 |
Methods of reducing CFCs
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Using HCFCsNO AEROSOLInternational agreements
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| 13 |
What is negative feedback?
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Brings things back into balance, Lessens the effects of biogeochemical processes
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| 14 |
What is positive feedback?
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Increases temperature or concentration of gases in the atmosphereEnvironmental changes cause...
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| 15 |
What are the limitations of predictions of climate change?
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Low amount of historical evidenceNatural fluctuationFeedbackProccesses may combine
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| 16 |
Explain the greenhouse effect
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Maintain global heat and pressurevisible light passes through the atmospheresome emmited back...
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| 17 |
Explain the Enhanced Greenhouse Effect
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Human activitiesIncreased concentration of gasesMore gases absorb IR radiationMETHANE HAS PEAKED.
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| 18 |
Name some consequences of Global Climate Change
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Sea level RiseClimate ChangesEcological ChangesOcean Current Changes
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| 19 |
How would the sea level rise?
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Thermal Expansion and Melting IceLand ice would melt, ice shelfs and glaciersTAKES A LONG TIME
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| 20 |
What climate changes would occur?
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Change in frequency, duration and velocity of wind patterns,Storm damage may increase
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| 21 |
What are the Ecological changes that would take place?
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Shallow rooted plants would not cope wellFaster plant growth,Hibernation disturbedEcological...
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| 22 |
Formula for residence time?..
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RESIDENCE VOLUME ...
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| 23 |
Main processes of the Hydrological Cycle?
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Through flowOutputInput
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| 24 |
Explain through flow
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Interception and infiltration, ground water flow.
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| 25 |
Output
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Evaporation, transpiration, River discharge
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| 26 |
Input
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Kinetic engery-windGPESolar radiation
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| 27 |
Human impacts on the Carbon Cycle
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AgricultureSoil disturbanceClimate changeDeforestationFossil fuel exploitation
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| 28 |
Main reserviours of carbon
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RocksAtmosphereWaterD.O.MFossil Fuels
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| 29 |
Main Processes of the Carbon Cycle
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SedimentationDecompositionCombustionFossilisationRespirationPhotosynthesis
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| 30 |
What are the main proccesses of the Nitrogen Cycle?
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IonisationNitrificationDenitrificationLeachingFixation
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| 31 |
What is Ionisation?
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N+O = oxides of NitrogenLightening
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| 32 |
What is Nitrification?
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OXIDATION OF AMMONIANitrifying bacteria in the soil
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| 33 |
What is denitrification?
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CHEMICAL REDUCTION OF NITRATESanerobic bacteria
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| 34 |
What is Leaching?
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Loss of soluble substances from surface of soil
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| 35 |
What is fixation?
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Nitrogen - AmmoniaMICROORGANISMSChemical reductionRoot Nodules
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| 36 |
What human activites have an impact on the Nitrogen Cycle?
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Farming and Pollution.
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| 37 |
Reserviours of Nitrogen?
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In plantsRocksAtmosphereDOM
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| 38 |
Main reserviours of Phosphurus?
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RocksPlants and AnimalsDissolved in water
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| 39 |
What are the main processes of the Phosphurus Cycle?
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Sedimentation,Food Chains,Dissolved phosphates absorbed by roots
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| 40 |
What are the effects of human impact on the Phosphurus cycle?
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Increase crop growthSewersEUTROPHICATION
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| 41 |
DEFINE RESOURCE
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All material theoretically available
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| 42 |
DEFINE RESERVE
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All the material available now
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