1. Population Geography

2. Studying Population
Demography: the statistical study of human populations.
Maps, Graphs, Population Pyramids, & Spatial Perspective are used to study populations.
used to forecast what future populations will be like

3. Population Density The average number of people living in an area.
Usually express in persons per square mile

4. Population Distribution
90% of people live in the Northern Hemisphere
2/3 of people live in the middle latitudes
People live in areas favorable for settlement
Mild climates, fertile soil, & a supply of fresh water

5. Population Change 3 Factors for Population Change:
1.) Birthrate- number of births each year for every 1,000 people living in an area.
2.) Death rate- total number of deaths each year for every 1,000 people.
3.) Migration- the process of moving from one place to live in another.

6. Migration Refugee- people forced to leave their homes
Emigrants- people that leave a country to live somewhere else.
Immigrants- people who come to a new country to live

7. What Causes Migration?? Push Factor- cause people to leave an area
Environmental hazards, droughts, war
Pull Factor- attracts people to a new location
Economic reason, jobs, pay, living conditions

8. Natural Increase Based on births and deaths not migration
Subtract birthrate from death rate

9. Demographic Transition
1st Stage: both birthrates & death rates are high
Many children are born
Poor heath conditions mean short life span
2nd Stage: death rates begin to fall
Improvements in medicine and healthcare
3rd Stage: both birthrates and death rates are low
Economically advanced countries are at this stage

10. Population Pyramids
Graph showing the percentage of males and females by age group in a country’s population.