POPULATION GEOGRAPHY

Vocabulary

REVIEW THE FOLLOWING SLIDES TO HAVE A BETTER

UNDERSTANDING OF THE VOCABULARY THAT IS ASSOCIATED

WITH POPULATION.

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Population Vocabulary Demography Population Distributi

on Population Density Birth Rate Death Rate Life Expectancy Demographic Transit

ion Model

Population Pyramid Replacement Rate Dependency Ratio

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Demography

The study of human populations and how they change over time.

Vocabulary

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Population DistributionThe pattern of population- where people

live- in a country, a continent, or the world.

Vocabulary

Looking at the map, how can you tell where the largest populations live in the United States?

Can you describe where the largest population distribution is in the U.S.?

What about the lowest population distribution?

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Population Distribution

Sparsely populated- contain few peopleTend to be difficult places to liveExample: Antarctica

Densely populated- contain many peopleTend to be livable environmentsExample: Europe

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Where do people live in the U.S.?

What do the bright lights indicate?

Why are there more bright lights on the east coast?

What influences where people live in the United States?

Describe which areas are sparsely populated and which are densely populated.

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Population DensityAverage number of people who live in a measurable area such as a square mile

or kilometer.

Internet Geography

Vocabulary

What do you notice about the population distribution of the world?

What areas have a high population density?

What areas have a low population density?

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Population Density

Notice that the world’s population is uneven. The most densely populated areas are located between 20°N and 60°N. This area has a

large amount of land with temperate temperatures.

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Factors Affecting Population Density

Physical Factors

High Density Low Density

Shape and height of land

Low land which is flat. Ex. Northern European Plain

High land that is mountainous. Ex. Himalayas

Resources Areas rich in resources (coal, oil, wood, fishing, etc.) Ex. Western Europe

Areas with too few resources. Ex. Area located below Sahara called The Sahel

Climate Areas of temperate climates- plenty of rain and heat. Ex. The United Kingdom

Areas with extreme hot and cold climates. Ex. Sahara

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Factors Affecting Population Density

Human Factors

High Density Low Density

Political Countries with stable governments. Ex. United States

Countries with unstable governments- people migrate. Ex. Afghanistan

Social People want to live close to each other for security. Ex. United States

People prefer to be isolated. Ex. Scandinavians

Economic Good job opportunities particularly in large cities.

Limited job opportunities. Ex. Amazon Rainforest

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Factors for population changes

Birth rate Death rate Migration

The first two factors are the major reasons for the change. When birth rates are higher than death rates,

the population will increase.

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Birth RateThe number of births in a year for every

1,000 people in a population.

The darker colors represent the countries with high birth rates

Vocabulary

What regions have lower birth rates?

What regions have higher birth rates?

Why do regions in the world have different levels of birth rates?

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Death RateThe number of deaths in a year for every

1,000 people in a population.

The darker colors represent the countries with higher death rates.

Vocabulary

What regions have low death rates?

What regions have high death rates? Why do different regions of the world have higher death rates?

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Life Expectancy

The number of years a person can expect to live.

Japan has highest life expectancy in the world.

Vocabulary

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Life Expectancy

Life expectancy gives an overall indicator of how healthy a country is. A great deal of information can be derived from studying life

expectancy such as the standard of living. As a general rule, the higher the life expectancy, the healthier (and more developed) a

country is.

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Demographic Transition Model

The model shows how a countries population changes as it develops. The model is divided into 4

stages.Internet Geography

Vocabulary

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Demographic Transition Model Stage 1

Low population growthBirth & death rates

high- results in little population change

Characterized world population until 17th century

Low total population

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Demographic Transition Model Stage 2

Rapid population growth

Birth rate is high with economic development beginning

Death rate falls with improved healthcare and more food

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Demographic Transition Model Stage 3

Population growth begins to slow

Falling birth rate- as economy improves growth slows

Low death rate

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Demographic Transition Model Stage 4

Negative or no population growth

Birth and death rates drop to low levels

Over time birth rates fall behind death rates

High total population

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Population Pyramid

A graph that is used to show the males and females within different age groups

of a population.

Vocabulary

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The female population from 20-24 years would make up a little over 4% of the population.

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Population Pyramids Wide at bottom shows

rapid population growth- more born than dieing

Straight sides show nearly equal

Narrow at bottom shows negative population growth- more dieing than born

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Population Pyramids Developing countries

usually have wide base and narrow top- represents high birth & death rates

Developed countries usually have equal distribution through age groups- top gets narrower due to deaths

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Replacement Rate

When enough babies are born to replace those people who die each year.

Vocabulary

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Dependency RatioCompares the number of dependents too

young or old to work (persons under age 15 or above age 64) with the countries

working-age population (persons over ages 15 to 64).

Vocabulary

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Dependency Ratio Low dependency- too

few workers have few dependents to support

High dependency- a high means a lot of young or old people for workers to support