Population density

A measurement of the number of people per given unit of land

arithmetic population density

The population of a country or region expressed as average unit per area. The population of the areal unit by the number of square kilometers or miles that make up the unit.

psychological population density

The number of people per unit area of arable land

population distribution

Description of locations on the Earths surface where populations live

dot map

Maps where one dot represents a certain number of phenomenon, such as population

magalopolis

term used to designate large coalescing supercities that are forming in diverse parts of the world

census

a periodic and official count of a countries population

total fertility rate

The average number of children born to a woman during her child bearing years

old age dependency ratio

The number of people 65 years of age for every 100 people between the ages of 15-64

child dependency ratio

The number of people between ages 0 and 14 for every 100 people between the ages of 15-64

doubling times

The time required for a population to double in size

population explosion

the rapid growth of the worlds human population during the past century attended by ever shorter doubling times and accelerating rates of increase

Zero population growth

a state in which population is maintained at a constant level because of the number of deaths is exactly ofset by the number of births.

crude death rate

The number of deaths yearly per thousand people in a population

crude birth rate

the number of live births yearly per thousand people in a population

natural increase

[population growth measured at the exes over live births over deaths.

demographic transition

Multistage model besed on western Europes expirience of changes in population growth exhibited by countries under going industrialization.

stationary population level

the level at which a national population ceases to grow.

Population density

A measurement of the number of people per given unit of land

population composition

structure of a population in terms of age

population pyramid

visual representation of the age and sex of a population whereby the percentage of each age group is represented by the horizontal bar the length at which represents its relationships to the total population.

infant mortality rate

a figure that describes the number of babies that die withing the first year of their lives in a given population

child mortality rate

a fuiguire that describes the number of children that die between the 1st and 5th years of their lives in a given population

life expectancy

a fuiguire indicating how long on average a person may be expected to live. normally expressed in the context of a particular state.

chronic or degenerative diseases

generally long lasting afflictions now more common because of higher life expectancies

genetic or inherited diseases

diseases caused by variation or mutation of a gene or group of gene in a human

expansive population policies

government policies that encourage large families and raise the rate of population growth

eugenic population policies

government policies designed to favor one racial sector over others

restrictive population policies

government policies designed to reduce the rate of natural population population increase

infectious diseases

deseases that are spread by bacteria viruses or parasites