populaton density

measure of total populaton reliative to land size

Arithemetic Density

Population density expressed numerically

Physiological Population Density

The number of people per unit area of arable land

population distribution

the arrangement of people on the Earth's surface

Dot Map

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

Megalopolis

a very large, heavily populated city or urban complex.

Census

the official count of a population

Doubling time

the time required for a population to double in size

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

natural increase

Population growth measured as the excess of live births over deaths; does not reflect either emigrant or immigrant movements

Crude Birth rate

The number of live births per year per 1,000 people.

Crude death rate

The number of deaths per year per 1,000 people.

demographic transition

Multistage model, based on Western Europe's experience, of changes in population growth exhibited by countries undergoing industrialization. High birth rates and death rates are followed by plunging death rates, producing a huge net population gain; this is followed by the convergence of birth rates and death rates at a low overall level

Stationary Population level

The level at which a national population ceases to grow

population composition

Structure of population in terms of age, sex and other properties such as marital status and education

Population Pyramid

Visual representations of the age and sex composition of a population whereby the percentage of each age group is represented by a horizontal bar the length of which represents its relationship to the total population.

infant mortality rate

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

Child Mortality Rate

A figure that describes the number of children that die between the first and fifth years of their lives in a given population

life expectancy rate

A figure indicating how long, on average, a person may be expected to live

epidemic

regional outbreak of a disease

Pandemic

An outbreak of a disease that spreads worldwide.

chronic/degenerative diseases

Generally long-lasting afflictions now more common because of higher life expectancies.

Expanisve 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 reducethe rate of natural population increase