AP Human Unit 2 Flashcards
Ecumene
The habitable area of the world
Arable
Land that can be farmed/Lived on
Arithmetic Population Density
Does not account for the uneven distribution of population with each country. No info on clustering & dispersal.
Physiological Population Density Equation
Total Equation/Arable Land (sq.mi)
Arithmetic Population Density Equation
Total Population/Land area (sq.mi)
Carrying Capacity:
The maximum population size that can be supported by the available resource without changing the environment.
Agricultural Population Density
Better indicator of a country’s level of economic development rather than population distribution
Agricultural Population Density Equation
Farmers/Arable Land (sq.mi)
Dependency Ratio
The # of people in a dependent age group divided by the number of people in the working age group multiplied by 100.
A high dependency ratio=
number of people not working, earning income, and paying taxes.
Sex Ratio
The proportion of males to females in a population
Crude Birth Rate (CBR)
The # of live births occurring in 1 year per 1,000 people
Total Fertility Rate (TFR)
Average # of children who would be born per woman during her childbearing years
Life Expectancy
The # of years the average person will live
Crude Death Rate (CDR)
The number of deaths occurring in 1 year of 1,000 people
Infant Mortality Rate
The # of children who die before 1 year of age
Natural Increase Rate (NIR) or Rate of Natural Increase (RNI)
-Does not account for migration
-Can be a negative number (that indicates population decrease
-Usually a percentage
Population Growth Rate
-more accurate measure
-accounts for Migration
Immigrants
People who moved INTO a country
Emigrants
People that move OUT of a country
Population Growth Rate Equation
Births - Deaths + Immigrants - Emigrants
Doubling Time
The number of years in which a population will double assuming the growth rate remains stable
Demography
The study of population statistics
The Demographic Transition Model (DTM)
Used by geographers to analyze and predict trends in population growth and decline including patterns of births, deaths and natural increase rates.