Water World Glossary

Key defintion for Water World topic. Easy to read and easy to remember.

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  • Created on: 26-04-12 07:27
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Hydrological cycle: the circulation of water around the world between stores by various transfers.
At a simple level: water evaporates from the ocean, moves with the wind, condenses into clouds,
precipitates and returns to the ocean via a river.
Water store: something that hold water for e.g: river.
Water flow: the flow of water.
Groundwater store: water contained beneath the surface.
Aquifer: An underground bed or layer of permeable rock, sediment, or soil that yields water.
Glaciers: a huge mass of ice slowly flowing over a land mass.
Evaporation: The process of water molecules escaping the surface of the Earth and entering the
Condensation: the formation of water droplets or ice crystals from water vapour when it is cooled.
Precipitation: movement of water from the atmosphere to the earth surface.
Overland flow: water running over the surface of the land into a river channel or body of water.
Through flow: water that flows slowly through the soil until it reaches a river.
Groundwater flow: the flow of water through the groundwater store.
Permeable: a rock which can absorb water (porous) or allow water to pass through cracks and joints.
Impermeable: a rock which cannot absorb water and does not allow it to pass through.
Lithosphere: the outer part of the Earth.
Drought: a lack of precipitation into an area for a long period of time.
Famine: reduced availability of food causing starvation and malnutrition, often leading to deaths on a
large scale.
Nomadic farming: a type of livestock in which farmers do not settle in one place, but continually
move with there herds to different pastures.
Permanent farming:
Cholera: An infectious and often fatal bacterial disease of the small intestine typically contracted
from infected water supplies.
Malaria: a fever caused by a single-cell parasite.
Dam: a large wall or earth barrier used to block a river valley. Purpose may be to store water,
control flooding and/or generate electricity.
Hydro-electric power: electricity produced through the use of moving water to turn turbines and
drive generators.
Intermediate technology:
Sustainable: Capable of being continued with minimal long-term effect on the environment.


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