Global water- key terms Flashcards
(24 cards)
What is a water transfer scheme?
Moving water from an area of surplus to an area of deficit
What is irrigation?
A method used to water crops
What is water security/
Having enough water to keep a population healthy and fed and for the economy to develop sustainably
What is over-abstraction?
Taking and using water faster than it is being replaced
How much of global water supply is used to grow food?
70%
What is HEP?
Hydro Electric Power
What is an aquifer?
Rocks underground that can hold large amounts of water
What is salinisation?
When too much water is used to water crops and it evaporates leaving harmful minerals
What is ‘grey’ water?
Water taken from bathroom sinks, showers, baths and washing machines
What is abstraction?
Taking water from one place usually underground
What is a water footprint?
The impact of our water use on the planet
What are two physical factors affecting water availability?
geology and climate
What is happening to the global consumption of water?
Its increasing significantly
What causes more surface runoff and surface storage in lakes and rivers?
Impermeable rock
EWhy does SE England use more groundwater than anywhere else in the UK?
It has a drier climate
What is a human factor effecting water availability?
Infrastructure e.g. pipes
What is the word for the level of demand on available water
Water stress
What does irrigation mean in terms of agriculture?
The supply of water to crops through channels or pipes
What are three resources necessary for human development?
Water, food and energy
How much is the worlds population increasing by each year?
80 million
What % of our planet is covered in water?
70%
How many people around the world don’t have access to fresh clean water everyday?
1 in 6
What uses the most water in households?
toilets
What is embedded water?
Water that is used to grow our food and make our clothes
