Population
Refers to all the people living in a particular country area or region
Demographers
People who study human population
What do demographers research?
- geographical distribution of people
- birth and death rates
- ages and sex distribution
- life expectancy
What do demographers use to analyse population?
Population pyramids
What do population pyramids show? (trends)
- trends of the past
- examine current population characteristics
- predict future population growth
What does the vertical axis represent on a population pyramid?
Age group of the population
What does the horizontal axis represent on a population pyramid?
Population number
The horizontal axis is split into..
- males on the left
- females of the right
Cohort
Describes each age grouping of five years distributed on the vertical axis of a population pyramid
THREE improvements that lead to longer life expectancy in developing countries
Improvements in:
- food supply
- medicine
- sanitation
What 3 categories is population divided into
- pre-productive
- reproductive
- post-productive
Pre-productive
children who are too young to reproduce
(under the age of 15)
Reproductive
Men and women who are biologically able to reproduce
(ages 15-45)
Post-productive
People who are too old to reproduce
(over the age of 45)
A ‘dependent’ person is..
someone who likely cannot take care of themselves
(under 14 & over 65)
An ‘independent’ person is..
someone who is able to take care if themselves
(between 15-64)
