Unit 2 AP HuG-P.R

the study of patterns and rates of population change,inclduing birth and death rates,migration trends,and evolving population distribution patterns.
population count
population density
a measurement of the number of people per given unit of land
Arithmetic population density
The total number of people divided by the total land area.
Physiologic population density
The number of people per unit area of arable land.
Population composition
structure of a population in terms of age, sex and other properties such as marital status and education
age sex pyramid
a graphic representation of the age & sex of a population
crude birth rate(CBR)
the number of live births yearly per thousand people in a population
crude death rate(CDR)
The number of deaths per year per 1,000 people.
infant mortality
A figure that describes the number of babies that die within the first year of their lives in a given population
total fertility rate
the average number of children a woman has in her lifetime
demographic transition (cycle)
Multistage model based on Western Europe's experiences of change in population growth exhibited by countries undergoing industrialization.
doubling time
The number of years needed to double a population, assuming a constant rate of natural increase.
exponential growth
cumalitive or compound growth (of a population) over a given time period.
linear growth
Expansion that increases by the same amount during each time interval.
natural increase
population growth measured as the excess of live births over deaths; does not reflect either emigrant or immigrant movements
population explosion
the rapid growth of the world's human population during the past century, attended by ever-shorter doubling times and accelerating rates of increase
stationary population level
the level at which a national population ceases to grow
absolute direction
a compass direction such as north or south
relative direction
direction based on a person's perception of places;such as left and right.
absolute distance
The physical distance between two points usually measured in a standard length like miles or kilometers.
relative distance
distance measured, not in linear terms such as miles or kilometers, but in terms such as cost and time.
push factors
negative conditions and perceptions that induce people to leave their adobe and migrate to a new location
pull factors
positive conditions and perceptions that effectively attact people to new locations from other areas
activity (action) space
the space within which daily activity occurs.
cyclic movement
movement that has a closed route and is repeated annually or seasonally
movement among a definite set of places
seasonal movement
Movements that are taken based on a seasonal basis.
the movement of persons from one country or locality to another
movement of individuals out of a population
forced migration
human migration flows in which the movers have not choice but to relocate
voluntary migration
Permanent movement undertaken by choice.
external migration
migration across an international border
interregional migration
Permanent movement from one region of a country to another.
step migration
migration to a distant destination that occurs in stages, for example, from farm to nearby village and later to a town and city
counter migration
the return of migrants to the regions from which they earlier emigrated
intervening opportunity
The presence of a nearer opportunity that greatly diminishes the attractiveness of sites farther away.
distance decay
The diminishing in importance and eventual disappearance of a phenomenon with increasing distance from its origin.
temporary refugees
refugees encamped in a host country or host region while waiting for resettlement
permanent refugees
person or persons who have been permanently displaced from their home
international refugees
refugees who have crossed 1 or more international boundaries during their dislocation
intranational refugees
Refugees who have abandoned their town or village but not their country.
immigration laws
laws and regulations of a state designed specifically to control immigration into the state
Eugenic population policy
government policy designed to favor one race over another
Expansive population policy
government policy that encourages large families and raises the rate of population growth
Restrictive population policy
Government policy designed to reduce the rate of natural increase.
Negative population growth
the actual decline in population due to less than replacement births or extensive diseases
a person who has to leave his or her country to find safety.