GCSE Geography Watery World

Concise revision notes developed for the Edexcel GCSE Geography Unit 2 topic, 'A Watery World'. Separated into lessons, for easy use and quick revision.

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  • Created on: 05-02-11 14:03
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Watery World
Lesson 1: Water Consumption in HICs and LICs
Figure 2
Water consumption is measured in how much is
Agriculture, e.g. in irrigation
Industry, e.g. in cooling towers in power
Domestic, e.g. drinking water
Figure 1
Figure 1 shows how water is
used domestically around the world. The larger countries show those, which
use more, for example India, China and the USA. Why? These countries either
are HICs, or have huge populations.
Lesson 2: Why are there differences?
Domestic Usage Agricultural Usage Industrial Usage
HIC Luxuries, including Much more water used Large scale factories
baths (120200 litres), to irrigate crops. that use millions of
flush toilets (612l), Irrigation methods litres of water in the
washing machines include modern production of various
(70120l), showers automated sprays, items.
(6080l), washing cars, which use and supply
filling swimming pools, more water, for
etc. example 75 litres of
water per second, by
pressing one button!

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LIC Not much availability to In China, hand worked Industry is small scale,
piped water directly to systems, or pumps are with businesses run
homes. Usually women common, and supply from home etc. But the
or children must walk to much less water on amount used is
the nearest water average. Just 2 litres of growing rapidly, for
source, generally water per second ­ if example in India,
several kilometres there is someone to CocaCola alone uses
away.…read more

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Lesson 4: Where does water we use come from? Aquifers!
1. Water soaks into ground and settles in large areas of porous rock such
as chalk or sandstone
2. These are like giant sponges, which fill up with water.
3. The highest level of water in an aquifer is known as the water table.
The London basin is an
aquifer. It exists from
Chiltern Hills to North
Downs, and provides the
city with clean and
accessible water.…read more

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Lesson 6 & 7: How does water supply vary worldwide?
Water supply is uneven. The
distribution of rainfall varies, so
where there is more, means there is
less likelihood to be scarcity. At the
same time, distribution of climate
varies too, so the hottest countries
are most likely to see water scarcity.
A combination of these two
elements decides whether a country
is likely to have water surplus, or
scarcity, with anomalies however.
Figure 9 and 10 show how
temperature and rainfall vary
globally.…read more

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Figure 10
Lesson 8 & 9: Problems associated with water supply HICs
Rainfall and Population imbalance
In the UK, rainfall and population is unevenly distributed. 1/3 of the
population live in the South East! But this is also the driest part of the country,
which means that here we often find water deficit! There's only an average
rainfall of 800mm, whilst in the North this is 2,000mm.…read more

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Figure 11
Lesson 10 & 11: Problems associated with water supply ­ LICs
Water Related Diseases
Dysentery An infection of the intestines marked by
severe diarrhea
Malaria Malaria (meaning "bad air") is a tropical
disease spread by mosquitoes kills over one
million people a year in Africa, Asia and the
Bilharzia A parasite disease that you may catch from
fresh water in lakes or slow rivers.…read more

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Unlined waste pits provide a major source of pollution in Oriente regions
of Ecuador. Over many years, toxic content have leeched into rivers,
contaminating ecosystems, and sending toxics downstream to Peru.
Childhood Leukemia rates are four times higher in this area than in other
parts of Ecuador. Lead contamination is common:
o 66% of children had levels of lead in their blood exceeding
maximum in May 2008.
o The Achuar people suffer from this, as these substances are
released from 30 years of oil drilling.…read more

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In Bursom, consumption dropped from
17.67 litres to 9.24 litres per kilograms
of potatoes processed.
Different methods of crop irrigation systems used: e.g. flood irrigation to flood
entire field. Overhead irrigation sprinklers give a controlled distribution. Drip
irrigation is expensive but is efficient as it supplies water straight to plant roots.
Lesson 1214: How is water use managed in LICs?
Managemen Explanation Ads/Disads
t system
Hand dug Most common way of Disad: Often dry out as they are
wells getting water in LICs.…read more

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public without needing
much more water. Disads: you must have treatment
services, for this water to be fit for
drinking.…read more


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