AQA GCSE Geography A population

A set of revision notes for the forthcoming exam.

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How does population grow?
Exponential growth
The world's population has grown exponentially. This means it has become increasingly rapid. This
should be followed by a more stable period of zero growth or natural decrease. Population is usually
shown on a line graph that becomes steeper over time. Today, growth rates are slowing down.
What is the demographic transition model?
The Demographic Transition Model graphs Birth rate, Death rate and Natural Increase. The word
demographic simply means population, and transition relates to change. Therefore this model
proposes what should happen to a population over time and how it should CHANGE.
If birth rate is greater than death rate the population will increase. If the death rate is greater
than birth rate the population will naturally decrease. The greater the difference the greater the rate
of Natural Increase. The rate of Natural Increase is much higher in developing countries of the world.
The demographic transition model is set out in 5 stages and was based on the United Kingdom.
These can be seen below.

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Characteristics of each stage
Stage 1 Stage 2 Stage 3 Stage 4 Stage 5
High Key factor indicating Death rate Birth and death Death rates rise
fluctuating transition from 1 to continues to fall. rates are both as population
stage occurs 2 is decreased Birth rate low. This low contains more old
where there is death rate. decreases. This is fluctuation is people.…read more

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Case study: 2. Cast study: 3. Case study: 4. Case Study: 5. Case Study:
Traditional Afghanistan Brazil USA Germany
rainforest It is an extremely Brazil is a newly The USA is the It is almost as
tribes poor country with industrialising largest and developed as the
In parts of one of the world's country.…read more

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Death rate is base shows a The pyramid has Germany has
high birth rates. beginning to fall decrease in birth become straight been in stage 5
However infant making the sides rate. The sides showing a for a while. This is
and child morality less concave. The straighter sides steady low birth because it is one
are high (shown apex shows a show people rate.…read more

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Population growth has slowed down.
Famines haven't happened.
Technology and exploitation of resources has increased standard of living.
Families in rural areas have suffered as they need large families to help on farms in order to
Gender imbalance- boys are preferred so girls are killed or abandoned at birth (there are 15
million abandoned female orphans) - boys outnumber girls by 60 million so many men cannot find
partners.…read more

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Richer world populations are aging. Low birth rates and smaller families mean fewer children. Better
healthcare and medicines allow people to live longer; but with no one to support them.
The issues
Health care
The demand for healthcare increases wit hold people as they become ill. Hey visit their GP more
often, and have more hospital appointments. The government has to find extra funding to support
Social services
Elderly need services such as nursing homes, day care centres and people to do home visits.…read more

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this is very good! thanks 


Thanks could save me a whole grade!

Mr A Gibson

A really well put together and thoughtful document which covers the DTM in great detail. Especially useful are the examples and the context for each stage. I would definitely recommend printing this off for your revision notes folder.

Suitable for every exam board.

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