Population Pyramids

1
Population Pyramids

• How do population changes affect a countrys
  future?

2

• You dont need your workbook yet. Checkout the
  next few slides about population pyramids to
  learn about them.
• What does the vertical or up and down axis
  represent?
• How many years does each age band represent?
• Which age band represents the most years?
• In which age band are you? Your siblings? Your
  mother/father? Your grandparents?
• What does the horizontal axis represent?

3

• Think about it Find the bar that represents your
  age and sex. What percent of the total U.S.
  population is in the same category as you?
• 4.5
• 3.5
• 2
• 2.5

4
What is a population pyramid?
Age always on the vertical axis
Population pyramids are used to get a picture
of a population are there more young or old
people? Males or females?
Governments use them to decide how to best use
funds If you have a lot of children, should
government money go to building schools or health
care for the elderly?
Percent of population always on the horizontal
axis
A series of bar graphs that shows the age groups
by sex of a population.
5
Use page 110 to do the next few slides.
6
Which one is Lawrence, KS?
Use these photographs to do the chapter 15
Preview , p. 110
7
Which one is Jacksonville, NC?
Use these photographs to do the chapter 15
Preview , p. 110
8
Which one is Yuma, AZ?
Use these photographs to do the chapter 15
Preview , p. 110
9
Do the Geoterms on page 111.
10
Vocab Assignment Match the word to the picture.
Write the letter of the picture next to the
corresponding word on page 111.
demography dependency ratio life
expectancy replacement rate total fertility rate
A
B

Population Density Map
C
D
11
Dilemma One A Shrinking Population(Page 112)
Italy has a problem its population is NOT
growing. The bulge in the middle of this
population pyramid means there are more older
people than young.
Bulge
12
Dilemma One A Shrinking Population(Page 112)

1. Look at page 112 in your workbook.
2. Find 1 and answer it in your workbook. The task
   is to give several reasons why you think a
   country might have negative population growth.
   In other words, what might cause a country to
   lose population or have less babies?

13
Dilemma One A Shrinking Population(Page 112)

• Look at page 112 in your workbook. Find 2 and
  use the next slides (taken from section 15.4) to
  take notes on what causes negative population
  growth.

14
Dilemma One A Shrinking Population(Page 112)

• Women are having fewer children than the 2.1
  replacement rate.

15
Dilemma One A Shrinking Population(Page 112)

• Because it costs a lot of money to raise a child,
  families are having fewer children.

16
Dilemma One A Shrinking Population(Page 112)

• Since it is difficult to find childcare, families
  are having fewer children.

How much is rent for the average American and
what is this saying about the cost of child care
vs rent?
17
Dilemma One A Shrinking Population(Page 112)
The higher the level of education of women in a
country, the lower the birthrate.

• Young women who focus on their education or
  career tend to have fewer children.

18
Dilemma One A Shrinking Population (p112)

• Look at 3 on page 112. Use the following three
  slides to learn about the problems caused by
  negative population growth and complete the
  sentence.

19
Dilemma One A Shrinking Population (p112)

• Check out the next three slides to answer 3.

Less children means that less schools, teachers
and child care workers are needed. Schools and
businesses related to children lose jobs and
abandon buildings.
20
Dilemma One A Shrinking Population (p112)
Less babies means less workers 30 years later.
Businesses may leave the country to find more
skilled workers, affecting the economy.
21
Dilemma One A Shrinking Population (p112)
Less babies means less soldiers 30 years later.
A country may find it difficult to recruit enough
people for its military.
22
Dilemma One A Shrinking Population (p112)

• 4. Rank the plans listed in your workbook on
  p.112 from strongest (1) to weakest (5). Again,
  which plan will best solve Italys negative
  population crisis?

23
Dilemma One A Shrinking Population (p112)

• Once you have ranked the plans, complete 5. Be
  sure to explain why you believe your rankings are
  right.

24
Dilemma Two An Aging Population(Page 113)
Spain has a problem its population is NOT
growing and theyre going to have TOO MANY old
people. The bulge in the middle of this
population pyramid means there are more older
people than young.
Bulge
25
Dilemma Two An Aging Population(Page 113)

• Look at page 113 in your workbook.
• Find 1 and answer it in your workbook. The task
  is to give several reasons why you think a
  country might have more older people than young.

26
Dilemma Two An Aging Population(Page 113)

• Look at page 113 in your workbook. Find 2 and
  use the next slides (taken from section 15.6) to
  take notes on what a population to age.

27
Dilemma Two An Aging Population(Page 113)

• A population ages when there are more old people
  than young ones.

28
Dilemma Two An Aging Population(Page 113)

• A population ages when people begin living longer
  (rising life expectancy)

29
Dilemma Two An Aging Population(Page 113)

• A drop in birth rate causes a population to age

30
Dilemma Two An Aging Population(Page 113)

• A baby boom after an event such as a war can
  result in a large generation.

31
Dilemma Two An Aging Population (p113)

• Look at 3 on page 113. Use the following three
  slides to learn about the problems caused by
  negative population growth and complete the
  sentence.

32
Dilemma Two An Aging Population (p113)

• Check out the next two slides to answer 3.

It leads to economic problems when the government
provides a pension (Social Security). Note A
government pension is when the govt. gives money
to old people so they dont have to work in their
old age. However, if there are a lot of old
people and few young people, taxes have to go up
to make difference.
33
Dilemma Two An Aging Population (p113)
It leads to economic problems when the government
provides health care for old people.
34
Dilemma One An Aging Population (p112)

• 4. Rank the plans listed in your workbook on
  p.113 from strongest (1) to weakest (5). Again,
  which plan will best solve Spains aging
  population crisis?

35
Dilemma Two An Aging Population (p113)

• Once you have ranked the plans, complete 5. Be
  sure to explain why you believe your rankings are
  right.