How and why is population changing? Mr. Marsh

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.

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

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.

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

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

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.

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