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Population
All definitions related to population
33
Geography
9th Grade
05/28/2010

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Term
Population Explosion
Definition
The sudden rapid increase of the population. It happened in the Industrial Revolution in the 1960's
Term
Birth Rate
Definition
The number of children born per 1000 of population. This is because of better medical care, food, living conditions, less social stigma (in some areas)
Term
Death Rate
Definition
The number of people who die per 1000 of the population per year. This has reduced due to medical care, education, support systems, and clean water.
Term
Natural Increase
Definition
When birthrate is higher than the deathrate.
Term
Natural Decrease
Definition
When deathrate is higher than the birthrate.
Term
Infant Mortality
Definition
The number of children under the age of 1 who die per 1000 of the population, per year.
Term
Migration
Definition
The movement of people. It can increase the population of a country, but will not change world population.
Term
Life Expectancy
Definition
The number of years that one is supposed to live to, at the time of birth.
Term
Carrying Capacity
Definition
The number of humans and animals a land area can support.
Term
Over Population
Definition
Too many people for resources.
Term
Under Population
Definition
Too few people to fully utilise the resources.
Term
Optimum Population
Definition
When resources and population are in balance.
Term
Population Structure
Definition
Shows how the population of an area is divided up between males and females of different age groups.
Term
Population Pyramids
Definition
Used to show population structure.
Term
Dependant Age
Definition
Children under 15 and adults above 65
Term
Working Age
Definition
15-64 years old
Term
Dependency Ratio
Definition
The number of people dependent on the working population.
Term
How to Calculate the Dependency Ratio
Definition
(% of population age 0-14) +( % of population aged 65) ÷ (% of population aged 15-65)
Term
Aging Population
Definition
When the average use of the population gets greater than the number of over 65's.
Term
The Demographic Transition Model
Definition
A geographical model used to explain the process of change from high birth and high death rate to low birth rates and low death rates as part of the economic development of a country from a pre-industrial to an industrialized economy.
Term
Population Density
Definition
The average number of people per square km.
Term
How to calculate Population Density
Definition
Total population ÷ Total land area in km squared
Term
Population Distribution
Definition
Where people are measured by comparing density.
Term
Chloropleth Map
Definition
Shows population density on a map by shading.
Term
Migration Balance
Definition
Looking at the number of people moving into a place, and out of a place.
Term
Types of Migration
Definition
Internal, International, Forced, Voluntary, Long Term, Short Term, Seasonal.
Term
Internal Migration
Definition
Moving within a country.
Term
International Migration
Definition
Moving to another country.
Term
Forced Migration
Definition
For human or nature reasons.
Term
Voluntary Migration
Definition
When you choose to move.
Term
Long Term Migration
Definition
Moving for a long time.
Term
Short Term Migration
Definition
Moving for a short amount of time.
Term
Seasonal Migration
Definition
When you move with the seasons, moving for needs depending on what the season offers.
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