3.4.1 Human Population Growth L.O: to describe and explain the shape of the human population growth curve to explain why different countries have different growth curves Make a note of the total human population size, as we shall see how much it increases during the lesson! ://galen.metapath.org/popclk.html
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3.4.1 Human Population Growth L.O: to describe and explain the shape of the human population growth curve to explain why different countries have different.
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3.4.1 Human Population Growth
L.O: to describe and explain the shape of the human population growth curveto explain why different countries have different growth curves
Make a note of the total human population size, as we shall see how much it increases during the lesson!
Demography is the study of the size and structure of populations, including a population’s age and sex distribution.
Demographic rates, such as population growth rate, birth rate and death rate can be used to describe how a population, or a subset of a population, changes over time.
A population’s demographic rates are determined by the environmental conditions. Human populations are greatly affected by their level of economic development.
population
births
immigration
deaths
emigration
Population growth rates
• For each of the locations, calculate:– Birth rate– Death rate– Population growth– Population growth rate
• What factors affect:a) birth rate?b) death rate?
Show % male and female per age group Three typical types:1. Stable population: birth rate = death rate2. Increasing population: birth rate > death rate3. Decreasing population: birth rate < death rate
Stationary
Increasing
Decreasing
Population PyramidsIn pairs, use the data to draw one of the two pyramids each.
You will need to calculate the %s first!
Compare the shapes of the two pyramids – what do they tell you about the populations?