AP Human Geo: Chapter 2 Flashcards
- Demography
The scientific study of population characteristics.
- Overpopulation
A situation in which the number of people in an area exceeds the capacity of the environment to support life at a decent standard of living.
- Census
A complete enumeration of a population.
- Ecumene
The portion of Earth’s surface occupied by permanent human settlement.
- Arithmetic Density
The total number of people divided by the total land area.
- Physiological Density
The number of people per unit of area of arable land, which is land suitable for agriculture.
- Agricultural Density
The ration of the number of farmers to the total amount of land suitable for agriculture.
- Crude Birth Rates
(CBR) The total number of live births in a year for every 1000 people alive in the society.
- Crude Death Rates
(CDR) The total number of deaths in a year for every 1000 people alive in the society.
- Natural Increase Rates
(NIR) The percentage growth of a population in a year, computed as the crude birth rate minus the crude death rate.
- Doubling Time
The number of years needed to double a population, assuming a constant rate of natural increase.
- Total Fertility Rate
(TFR) The average number of children a woman will have throughout her childbearing years.
- Population Pyramid
A bar graph that represents the distribution of population by age and sex.
- Dependency Ratio
the number of people under age 15 and over 64 compared to the number of people active in the labor force.
- Sex Ratio
The number of males per 100 females in the population.