Population Change

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What is natural change?
The difference in population due to births and deaths, per 1000, per year.
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How is population change calculated?
(Births - Deaths) + (Immigration - Emigration).
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Is the Birth Rate expressed as a number or a ratio?
A number.
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Is Fertility Rate expressed as a number or a ratio?
A ratio.
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By how much does the world's population increase each year?
Rougly 80 million.
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What is Fertility Rate?
The ratio of live births in an area (e.g. a country) to the population of that area.
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What are some historical causes of population growth?
Invention of metal tools, advances in crop growing and plant breeding, improvements in medicine and hygiene, better preservation and storage of food.
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What is a population structure?
The composition of a population (often expressed through a population pyramid).
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What is a dependency ratio?
The old and young in a population : people of working age.
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What is the juvenility index?
The population who are 0 - 15 divided by the population who are over 16.
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What is the old age index?
The population who are over 60 divided by the population who are between 16 and 59.
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What can be negative impacts of Rural-Urban migration for a rural area?
The older population are left behind, a male/female imbalance, a fall in Birth Rate and a rise in the Death Rate.
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What does a population pyramid show?
The results of births and deaths
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What are the costs of migration for the source country?
Loss of young adult labour force and skilled workers, male/female imbalance.
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What are the costs of migration for the host country?
Educating the migrants' children, over dependence on migrant labour, increased pressure on resources
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Other cards in this set

Card 2

Front

How is population change calculated?

Back

(Births - Deaths) + (Immigration - Emigration).

Card 3

Front

Is the Birth Rate expressed as a number or a ratio?

Back

Preview of the front of card 3

Card 4

Front

Is Fertility Rate expressed as a number or a ratio?

Back

Preview of the front of card 4

Card 5

Front

By how much does the world's population increase each year?

Back

Preview of the front of card 5
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