Global water distribution Flashcards
(11 cards)
What does the availability of fresh waste depend on
-r…
-e…
-where there are water s…
-water t… facilities
-rainfall
-evaporation
-where there are water sources
-water treatment facilities
What is water surplus
-when there is more water than is needed
What is a water deficit
-when there is not enough water to meet demand
What kind of places get a water deficit
Places with:
-low r…
-h… temperatures
-d… climate
-high d…
Places with:
-low rainfall
-hot temperatures
-dry climate
-high demand
How has water supply and demand changed
Supply:
-over-a…: aquifers and g… have been d… as people use the water f… than it can be r…
-p…: chemicals from a… and industry have polluted l… and rivers, making the water u…
-climate …: r… is less r…
Demand:
-growing …: higher d… for water
-d…: the growth of i… has increased demand for water, and in things like a… farmers use … instead of rainfall, and as people become w… they tend to use more …
Supply:
-over-abstraction: aquifers and groundwater have been depleted as people use the water faster than it can be replenished
-pollution: chemicals from agriculture and industry have polluted lakes and rivers, making the waste unsafe
-climate change: rainfall is less reliable
Demand:
-growing population: higher demand for water
-development: the growth of industry has increased demand for water, and in things like agriculture farmers use irrigation instead of rainfall, and as people become wealthier they tend to use more water
In developed countries what is the main use of water
Domestic
In developing and emerging what is the main use of water
Agriculture
What is virtual water importing
-where developing and emerging countries use lots of water to produce things that are consumed in developing countries
How does the demand for water vary across the Uk
-the north and w… of the Uk have high … which means there is a good supply of w…
-the south e… and the m… have high p… densities which means there is a higher d… for water
-the south e… and midlands are areas of water d…
-the north and w… are areas of s…
-the north and west of the Uk have high rainfall which means there is a good supply of water
-the south east and the midland have high population densities which means there is a higher demand for water
-the south east and midlands are areas of water deficit
-the north and west are areas of surplus
Problem with UKs infrastructure on water
-the pipes and sewage systems are old and can’t efficiently keep up with the higher volumes of water
-this means lots of water is lost, around 3.1 billion litres of clean water per day due to leaky pipes
Emerging and developing countries problems with water supply
-many people have to carry water to their homes across very far distances
—>distractions from education and work
