Population Pyramids

What is a population pyramid?

–a graph showing the distribution of a population by sex and age.

Examples

What are population pyramids used for?

To describe the population characteristics of different societies

To predict future growth trends.

Think….

How many children would you have if you had to run a farm with just you and your family?

Does that still happen?

What will the population pyramid for those places look like?

Developing CountryRapid Population Growth

•This pyramid represents countries that have not gone through the industrial revolution.

•Families have 5 or more children per family.

Which one is closest to what the United States’ pyramid would look like?

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Ding Ding Ding if you picked this one you are correct!!

•This pyramid represents countries that have already gone through the industrial revolution.

•Families usually have 3 or less children per family.

Developing Country Rapid Population Growth

Newly Industrialized Country

This represents countries that are transitioning from developing to developed.

Newly Industrialized countries

Developed CountrySlow Population Growth

Developed - Stage 5

Words you need to know!!!! Birthrate- The ratio of total live births to total

population in a specified community or area over a specified period of time.

Death Rate- The ratio of total deaths to total population in a specified community or area over a specified period of time.

Population Distribution- Where do the people live with in an area.

Population Density- How many people live in a given area.

Infant Mortality Rate- the number of infant deaths per 1000 live births

Life Expectancy-how long are people expected to live Literacy Rate- What percentage of people can read

and write.