Population Pyramids.

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Presentation transcript:

Population Pyramids

Purpose of a Pyramid A visual representation of the population of a country. graphically display a population's age and gender composition show numbers or proportions of M and F in ea. age COHORT show gains of members due to immigration and birth, and loss of members due to emigration and death reflect population growth or decline  AKA: pop. structure/diagram, age-sex structure/diagram,

Dependency Ratio

Follow Historical Events & Make Predictions

Interpreting the Shape There main types of pyramids Rapid growth Slow growth Negative growth Shape of rapid growth Shape of Slow growth Shape of negative growth

High, Slow & Negative Growth

Rapid Growth

Rapid Growth Pyramids Have a large base to show high birth rates Amt of ppl decreases as the ages go up  a lower standard of living Associated with developing countries Haiti, Uganda, Cape Verde Similar to Stages 2-3 What are issues these countries will face?

Slow Growth

Slow Growth Pyramids Take on a more rectangular shape Indicates population is remaining fairly steady Birth rates and death rates are similar excellent health care Associated with developed countries UK, USA, Canada Similar to Stage 4 What are issues these countries will face?

Negative Growth

Negative Growth Pyramids Looks like a reverse pyramid Indicates the population of the country is decreasing Death rates are higher than birth rates Older population, not having kids Emigration Often associated with developed countries Russia, Japan, Italy Similar to Stage 5 What are issues these countries will face?

Soviet Union WWI- 1914-1918 December 1934 1,700,000 military dead December 1934 Stalin began a period of purging and terror that lasted until 1939 and was marked by the execution of virtually the entire political and military elite. Enemies of the State http://www.fortunecity.com/victorian/riley/787/Soviet/Stalin/Stalin.html

Soviet Union How would you determine how World War I impacted the male population? What age group was impacted by Stalin’s purges?

Cambodia April 17th, 1975 the Khmer Rouge, a communist guerrilla group led by Pol Pot, took power in Phnom Penh, the capital of Cambodia. During their rule, it is estimated that 2 million Cambodians died by starvation, torture or execution.

Cambodia How did the rule of the Khmer Rouge impact Cambodia’s population? When did this occur?

South Africa

DEMOGRAPHIC TRANSITION MODEL!! Get out a pen and about 4-5 colors (pencils, highlighters, etc)

DTM- Quick Thoughts No one lives here anymore Sanitation & medical All about girls Rich kids No more kids Hans Rosling: “Religion & Babies” Hans Rosling: Global Pop. Growth

Immigration Research On my Weebly will be an assignment that will send you to about 4 websites Instructions and hyperlinks are given on the assignment Certain paragraphs need to be written in one Word document and uploaded to turnitin.com Due Thursday, 2/4 at 11:59pm We will have a class debate/discussion on 2/5 where you will need to speak

Pyramid Match-Up Australia Canada Greece France Egypt Gaza Strip Jordan Yemen South Korea Philippines Japan Sierra Leone Afghanistan Russia Italy Bolivia Malaysia United Kingdom United States Italy Cape Verde Cambodia Vietnam China Russia Switzerland Iraq Singapore Germany Argentina United Arab Emirates Israel Libya Ukraine Brazil Italy (2009)