Geography UNIT 2

Uniit 2 exam Population dynamics

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  • Created by: Sahani
  • Created on: 08-03-11 14:13

People and The Planet

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9.1 World and Population Growth

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9.2 Meauring Population Change

Current Population: 6.7 billion

 Population is growing exponentially. (2,4,6)

 1974 - 4 billion

 1987 - 5 billion

 1999 - 6 billion

 2013 - 7 billion

2054 – 8 billion

This is growing too fast and there is a fear the earth will become over populated

 

 

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Measuring Population Change

Birth Rate: The number of babies born alive for every 100 people in a year Death rate: The number people who die for every 100 people in one year Natural increase: birth rate – death rateEasy to compare per 100 because countries have different populations

 Examples:

 Population increase             Population decline             Population balance: Uganda                                 Japan                                 Poland                       Natural increase: 35.83         Natural increase: -1.89     Natural increase: -0.02

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Variations in Population change

Fertility rate: The average number of children born to a woman in her lifetime

Replacement level: The average number of children required to be born to women to ensure that the population remains stable

Where is it Happening?

Population increase:      Population decrease:       Population decline:

North America, Europe      Africa, Middle East        Russia, Central and Eastern

                                                                                               Europe                    

Reasons:

  • Early ages of marriage, so people are likely

to have more children in the years of their marriage

-          Yemen: 48% get married at 18

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