Population Flashcards
Zero growth
When death rate and birth rate is equal and there is no increase or decrease
Birth and death rate
Number of deaths or babies porn per 1000 annually
Natural change
Difference between birth and death rate as a percentage
Natural increase
Natural decrease
Birth rate exceeds death rate
Death rate exceeds birth rate
Demographic transition model
Model explains the birth and death rate patterns across the world and time
Stage 1
High death and birth rate (Traditional rainforest tribes)
Wide base, narrow apex
Stage 2
Natural increase (Afghanistan) Pyramid less concave, apex shows a few extra elderly
Stage 3
Birth rate rapidly decreases
Death rate slowly decrease
Population grows but not as fast (India, Kenya)
Narrow base, straight sides
Stage 4
Low birth and death rate (USA, France)
Birth rate fluctuates
More straight sided, narrow base
Stage 5
Natural decrease because of ageing population
Population starts to decrease (Germany, Japan)
Narrower base,
Factors affecting population growth
Agricultural change - Technology improve yields and saves labour
Rural to urban migration - Children seek better educational
opportunities
Education - Achievements increase and improves standards of living but children become a disadvantage to the economy
Population pyramids
Bar graph used to show the age and gender structure of a country, city or areas
Infant mortality
Babies die under a year of age per 1000 live births