Population Density, Population Pyramids, and Aging Populations Flashcards
(27 cards)
Age Structure
Refers to the breakdown of a population into different age groups or cohorts
Aging Population
A population of a country or place that ages as the number or proportion of its elderly people increases
Agricultural Density
The number of farmers per unit of arable land
Androcentrism
A phenomenon in which a culture demonstrates a marked preference for males
Arable Land
Land suitable for cultivation or agriculture
Arithmetic (Crude) Density
The average number of people per unit of land area (usually per square mile or kilometer)
Baby Boomers
People born from 1946-1964 during the post World War II uptick in Birth rate
Carrying Capacity
The number of people a particular environment (or Earth as a whole) can support on a sustainable basis
Demography
The statistical study of population and its change
Dependency Ratio
The number of dependents in a population, that each 100 working age people (ages 15-64) must support
Ecumene
The portion of Earth’s surface with permanent human settlement
Elderly Dependency Ratio
The number of elderly dependents in a population (usually older than 64) that every 100 working-age people must support
Youth Dependency Ratio
The number of young dependents in a population (usually younger than 15) that every 100 working age people must support
Sex Ratio
The ratio of the number of men to number of women in a population
Population Pyramid
A very useful graphic device for comparing age and sex structure
Population Distribution
The pattern in which humans are spread out on Earth’s Surface
Population Density
The average number of people per unit of land area
Population Composition
The makeup of the population by age and sex as well as by ethnic, racial, income and educational background
Population Clusters
Heavily populated areas that illustrated the unevenness in global population distribution; geographers have identified four population clusters on Earth: South Asia, East Asia, Southeast Asia, and Europe
Physiological Density
The average number of people per unit area (a square mile or kilometer) of arable land
Overpopulation
occurs when the human population exceeds the food supply
Median Age
The age that divides a population into two halves so that one half is younger than this age and the other half is older
Mean Center of Population
The balancing point given the distribution of population
Generations
Groups of people who were born around the same time and share some common traits, due to the cultural and societal influences they shared as they grew up
