Unit 2: Population and Migration AP HG | Hayford

Vocabulary flashcards for Unit 2: Population and Migration AP HG | Hayford

Population density

The number of people occupying a unit of land

Arithmetic density

The total number of people per unit area of land, it is calculated by diviidng the total population by the total land area

Physiological density

The total number of people per unit of arable land, the higher the physiological density, the greater pressure on the land and its resources

Agricultural density

The total number of farmers per unit of arable land, higher agricultural density, high numbers of farmers per land unit

Carrying Capacity

The maximum population size an environment can sustain

Dependency Ratio

The number of people in a dependant age group divided (under age 15 or 65 and older) by the number of people in the working age group (ages 15 to 64), multiplied by 100 (the higher it is, the more elder or children there are instead of working age people)

Demographics

Data about the structures and characteristics of human populations

Mortality

Deaths as a component of population change

Population Pyramids

The graphs show the age-sex distribution of a given population

Rate of Natural Increase (RNI)

The difference between the crude birth rate and crude death rate of a defined group of people. A high RNI can indicate rapid population growth or decline

Overpopulation

A population that exceeds its sustainable size or carrying capacity

Mobility

All types of movement from one location to another whether temporary or permanent or over short or long distances.

Voluntary Migration

People make the choice to move

Pull factor

Postive cause that attracts someone to a new location

Push factor

Negative cause that compels people to leave a location

Forced Migration

People are compelled to move by economic, political, environmental, or cultural factors

Refugees

People who are forced to leave thier country for fear of persecution or death

Repatriate

To return to ones home country

Kinship links

Networks of relatives and friends

Skills gap

A shortage of people trained in a particular industry