Population And Migration Flashcards
What is crude brith rate
The number of live births per thousand of the population per year
What is crude death rate
Total number of deaths per thousand of the population per year
Natural increase is when?
The birth rate is higher than the death rate. The amount the population increases by is called natural increase.
Natural decrease is when?
The death rate is higher than the birth rate. The amount the population decreases by is natural decrease.
What does the word model mean?
A theoretical framework that allows us to predict things/events
What is the demographic transition model
Demographic-population
Transition-change over time
What is a population structure
The composition of the people living in a country
What is a population pyramid
A graph showing the structure of a population by comparing relative numbers of people in different age groups
How is information displayed on a population pyramid
- A series of horizontal bars which represents 5 age groups, e.g. 0-4 years, 5-9 years, 10-14 years, 15-19 years, 20-24 years etc.
- Two sides - left side usually shows males and the right hand side usually shows females.
- The numbers along the bottom represent how many are in each bar - sometimes this is the actual number in each gender and age group but often is an age percentage of people in the total population who are in this category.
Dependency
There are 3 age groups
Youth dependent
Aged dependent
Economically active
What is migration?
Migration is the permanent or semi permanent movement of people from one place of residency to another
An emigrant is
Someone who is migrating out of country
An immigrant is
Someone who is moving into a country
Immigration is?
I for in
Emigration is?
E for exit