The Water Cycle and Water Insecurity Key Words (from Hodder Education revision guide)

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FOSSIL WATER
Ancient, deep groundwater from pluvial (wetter) periods in the geological past
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CRYOSPHERE
Made up of areas int he world where water is frozen into snow or ice
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DRAINAGE BASIN
An area of land drained by a river and its tributaries, sometimes called a river catchment
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EVAPOTRANSPIRATION
The combined effect of evaporation and transpiration, such as from most vegetated surfaces
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AVAILABLE SOIL WATER
The amount of water that can be stored in the soil and is available for growing crops
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SEA SURFACE TEMPERATURE ANOMALIES
Relate to how much temperatures of the sea surface (recorded at a particular time) differ from the long-term average. Anomalies can be positive or negative. Positive anomalies occur when the temperature is warmer than the average, negative if cooler
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DESERTIFICATION
The process by which once-productive land gradually change into a desert-like landscape. Usually takes place in semi-arid land on the edge of existing deserts. Not really reversible
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GREY WATER
Waste water (e.g. from sinks or baths) that can be recycled but not necessarily for drinking
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FLASH FLOODING
Distinguished by its exceptionally short lag time - often minutes or hours
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STORM SURGE
Caused by very low air pressure, raising the height of the high-tide sea. Strong onshore winds then drive the 'raised' sae towards the coast, breeching defences and flooding large areas
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EUTROPHICATION
The process of nutrient enrichment that ultimately leads to the reduction of oxygen in rivers, lakes and ponds and the consequent death of fish and other species
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WATER INSECURITY
Begins to exist when available water is under 1,700m3 per person per day. This is the start of water stress. Under 1,000m3 is water scarcity
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SAFE WATER
Water fit for human consumption
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HEP
Hydroelectric power
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DESALINATION
The process of removing dissolved solids in sea water to make it suitable for human use
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Other cards in this set

Card 2

Front

Made up of areas int he world where water is frozen into snow or ice

Back

CRYOSPHERE

Card 3

Front

An area of land drained by a river and its tributaries, sometimes called a river catchment

Back

Preview of the back of card 3

Card 4

Front

The combined effect of evaporation and transpiration, such as from most vegetated surfaces

Back

Preview of the back of card 4

Card 5

Front

The amount of water that can be stored in the soil and is available for growing crops

Back

Preview of the back of card 5
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