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Demographics

This video explores the field of demographics and its significance in understanding population changes. It covers topics such as birth rates, death rates, migration, population growth, population pyramids, and population density. It also discusses historical trends in immigration and the factors that influence people to leave or move to another country.

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Demographics

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  1. Demographics CGC1D April 3, 2014

  2. How Many People? Link: World Population Clock Population Video…

  3. The Study of Populations • Demographicsis the study of populations. It helps answer questions such as • Why are more schools closing than opening? • Why will you likely have to work more years than your parents before retiring? • Why are old rock-and-roll groups, such as the Rolling Stones, still so popular?

  4. Demographers use rates…(*stats from 2003) Births per day in Canada: 906 Births per day in Russia: 3 836 Which country is growing fastest due to births? Population: 32 million Population: 143 million In order to compare the births in each country, we use the Birth Rate: Birth Rate = # of births per year x 1000 Total Population Canada: 330 690 x 1000 Russia: 1 400 140 x 1000 32 000 000 143 000 000 = 10 births/ 1000 people = 10 births / 1000 people

  5. How do Populations Change? 4 ways… Naturally: 1) Births and 2)Deaths Migration: 3) Immigration and 4)Emigration

  6. How do populations change? Natural Change (Births and Deaths) Birth Rate (# of births per year / population) x 1000 Death Rate (# of deaths per year / population) x 1000 Balance between Births and Deaths is “Natural Increase Rate” Natural Increase Rate = Birth Rate – Death Rate MIGRATION (Immigration and Emigration) Immigration Rate (# of immigrants per year/population) x 1000 Emigration Rate (# of emigrants per year/population) x 1000 Balance between Immigration and Emigration is “Migration Rate” Migration Rate = Immigration Rate – Emigration Rate

  7. Population Growth Rate The overall growth of a population can be determined by adding the natural increase rate and the net migration rate. e.g. Canadian Example 3/1000 + 5/1000 = 8/1000 (0.8%)

  8. The Study of Populations • The best way to compare populations of different countries is through population pyramids. • It is a “paired horizontal bar graph” with females on the right…

  9. The Study of Populations …and males on the left. • Both sides show the percentages of people in each age group.

  10. The Study of Populations • Putting the two sides together can allow you to easily compare a country’s population for different years (or to compare different countries).

  11. The Study of Populations • The dependency load is the part of the population that needs to be supported. It is made up of two components: the 0–14 age group and the 65+ age group.

  12. The Study of Populations • What has happened to the dependency load between 1956 and 2004? • What is the significance of this change?

  13. The Study of Populations • A specific pattern of population growth has occurred in many developed nations during the past 60 years. • What does a “typical” person look like? Baby Boom Baby Echo Births Generation Y Generation X 1965 2025 1945 1985 2005

  14. Population Density Population Density is a measure of the number of members of a population in a given area. It is usually measured in km2. PD = # of people/area e.g.

  15. Population Density

  16. Population Density Interactive world map

  17. HONG KONG Population Density: 6 480 people/ sq. km. (Sioux Lookout: 13.3 people/ sq. km!) Canadian average: 4 people/ sq. km.

  18. What accounts for the change around 1800? ?

  19. Historical Trends of Populations

  20. Historical Trends of Populations • Canadian Immigration Patterns

  21. Historical Trends of Populations • Immigration to Canada has had periods of boom and bust. These were caused by events that occurred both in Canada and in other countries.

  22. Historical Trends of Populations

  23. Historical Trends of Populations

  24. Historical Trends of Populations • The percentage, by location, of the population that is made up of immigrants. YT NT

  25. Historical Trends of Populations • What factors cause people to leave the country in which they live and move to another country? (PUSH FACTORS)

  26. Historical Trends of Populations • What factors attract people to move to another country, such as Canada?(PULL FACTORS)

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