1. How and why is population changing?
Mr. Marsh

2. Learning Objectives
To understand that population can change due to two distinct factors.
To be able to match up key terms and definitions for the unit.
To suggest reasons why a countries population might change rapidly.

3. Births Immigrants Population GAIN Total Population Population LOSS+
Natural Change - +
Migration Change -
Emigrants
Deaths

4. Task
On the worksheet, you have to match up the key terms with the correct definitions.
Do this in pencil first so that you can correct them if you don’t quite get them all right.

5. Why does population increase?
Mainly due to a decline in death rates and infant mortality rates but why?
Development of modern medicines.
Immigration
Pro-natalist policy – EG – Singapore/Estonia
Cleaner drinking water and better sewage disposal.
Why does population increase?
Better diets – promoting healthy eating ‘5 a day’
Better healthcare – more doctors, nurses and hospitals.
Introduction of vaccination and immunisation programmes.
More hygienic housing

6. Why does population decrease?
Spread of diseases and not having medical facilities or cures such as HIV/AIDS
Death rate is higher than the birth rate
Anti-natalist policy such as China – ‘One Child policy’
Why does population decrease?
Natural disasters such as famine, drought, flooding, tsunamis etc etc.
War/conflict – men away from home – not many babies being born – lives also lost in action.
Food shortages
Emigration

7. Types of Migration
Voluntary – immigration and emigration because people/families wish to move.
Involuntary/forced – refugees – a person who is residing outside the country of their birth due to fear of persecution for reasons of race, religion or political opinion.

8. Homework: VLE Question
How might the infant mortality rate differ between developing and developed countries and why is this the case?
Date due by: 17/09/2010