Population Dynamics

Population Dynamics Revision

Birth Rate – the amount of babies born per 1000 of the population per year

Death Rate – the amount of deaths per 1000 of the population per year

Infant mortality – number of babies that die before they are 1 per 1000 of the population

Life expectancy – average age a person is expected to live to

Natural increase/decrease – the difference between the birth and death rates

Fertility rate – the average number of children born to a woman

Replacement level – the amount of babies needed to be born for the population to remain level

Pro-natalist policy – a population policy that encourages births to decrease the population

Anti-natalist policy – a population policy that tries to reduce births to decrease the population

Population Balance – birth and death rates are almost equal and the population remains level

Population density – average number of people per square kilometre Total population

Total land area (km2)

Population distribution – the way in which people are spread across a given area

Densely Populated

Sparsely Populated

Moderately Populated

What affects population density?

Good

Bad

• Temperate climate

• Low lying flat fertile land

• Natural resources

• Access to sea/rivers

• Extreme climates

• Dense/sparse vegetation

• Mountainous areas

• No natural resources

Optimum population – resources can be used to their best advantage to maintain the standard of living

Over population – too many people for the resources available

Under population – too few people to make the most of the resources available

Carrying capacity – the maximum number of people that can be supported by resources and energy

Diverge – move away from each other

Converge - move towards each other

Demographic Transition Model

DTM – shows…