9-8 Quiz - 2.1-2.4 + World Regions study guide

Population Distribution

The pattern of human settlement, the spread of people across the earth

Population Density

A measure of the average population per square mile or kilometer of an area

Arithmetic Population Density

Calculated by dividing a region’s population by its total area

Physicalogical Population Density

Calculated by dividing population by the amount of arable land

Agriculture Population Density

Compares the number of farmers to the area of arable land

Overpopulation

Having more people a region can support without damaging the environment

Population Pyramid

This tool is based only on age and gender data. And can provide info on birth rates, death rates , how long people live on average in economic development. And can also give evidence of past events such as environmental hazards, wars, political changes and epidemics

Cohorts

in a population period vertical axis shows age groups.

Sex Ratio

Ratio between the number of males and the number of females

Birth Deficit

The bars of the pyramid representing children born during a conflict are often significantly shorter than the bars immediately above and below them or in short a slow down of births

Baby Boom

The birth rate spike, often one’s hostilities and and peace resumes

Baby Bust

The lowering of birth rates after a number of years when a boom ends

Potential Workplace

The group expected to be societies labor force

Dependency Population

People under 15 or over 64 because they are considered too young or too old to work full-time and rely on the economically active workforce to keep the society running

Dependency Ratio

The comparison between the size of the Potential Workplace and the Dependent Population

Demographic Balancing Equation

To describe the future of populations of a region of any scale (Future population = current population + # of births - # of deaths) (Immigrants - Emigrants)

Crude Birth Rate (CBR)

Is the number of a live births per year for each 1000 people

Total Fertility Rate (TFR)

The average number of children who would be born per woman in a country

Life Expectancy

The average number of years people live

Infant Mortality Rate

The number of children who die before their first birthday

Crude Death Rate (CDR)

The amount people that are dying per 1,000

Rate of Natural Increase (RNI)

The percentage at which a country’s population is growing or declining, without the impact of migration

Population Doubling Time

Can be estimated using an equation known as the Rule of 70

(Assuming the growth rate remains steady, the approximate doubling time in years will be 70 divided by the growth rate per year)