1. Population Pyramids
Population Pyramid
A graph that shows the number of men and women in a country
for all age groups.

2. Bellringer 2/25
According to the webquest that you did last week, what is happening to the world’s population?
Is the population quickly increasing in all areas of the world?
Why do you think some country’s population is increasing more quickly than others?

4. Population in Millions
Population pyramid of India
Y Axis
Male
Female
Population in Millions
X AXIS

5. Birth rates are not stable.

6. Lopsided and Skewed Populations
Unequal Sex Ratios
Son preference (more men than women)
Wars (more women than men)
Imprisonment
Immigration
Unequal Age Ratios
One Child Policy
Changes in birth rates

7. A young population requires what services?
Daycare facilities
Pediatricians
Schools
Eventually colleges and/or jobs
Financial support

8. What can people between 15-65 do that younger or older people usually don’t or can’t?
Work (so they need jobs)
Pay taxes
Have and raise children
Take care of younger or older people

9. An old population requires what services?
Doctors
Financial support
Retirement homes or caretakers
Hospitals

10. Detecting Population Growth

12. Harris County, Texas

15. Population in millions
Population pyramid of India
Age groups
Elderly
Adults
Young people
Population in millions

16. Population in millions
Population pyramid of India
Population in millions

17. Shapes of population pyramids

19. Population in thousands
Male
Female
This country has a large number of temporary workers. These are people who migrate here especially to find a job.
Population in thousands

20. Population pyramid for Mozambique.
Population pyramid for Iceland.

21. What happens next?

23. What is going to happen to Japan’s population in the future?
Why does this matter?

24. ?

25. ?

26. ?

27. Bellringer 2/27