Learning Outcomes Explain population trends and patterns in
births (Crude Birth Rate), natural increase, and mortality (Crude
Death Rate, infant and child mortality rates), fertility and life
expectancy in contrasting regions of the world. Analyse population
pyramids. Explain population momentum and its impact on population
projections. Give a detailed account including reasons or causes.
Define: births (Crude Birth Rate), natural increase mortality Crude
Death Rate Skills: Graph interpretation Explaining trends Spearmans
Rank Correlation Coefficient (?)
Slide 3
Key words Birth rate Death rate Infant mortality Malthus
Doubling time Life expectancy Fertility rate Population pyramid
Demographic transition model Population momentum
Slide 4
Command terms Explain Analyse
Slide 5
Exam Style Question Explain the differences in [births |
natural increase | mortality | fertility | life expectancy] in two
contrasting geographical locations. [5 marks] This question is an
example of the type of question that may be seen on an exam.
Slide 6
Governments, NGOs, UN, and other national / international
agencies spend time money and energy researching populations and
world population trends. They study things like: How many people
there are Where people are, where they are not Where people move to
Where are people being born most, and where are they dying most
Where will people be born most, and where will they die the
most
Slide 7
Why would they do this? On a piece of paper, quickly brainstorm
the population issues/consequences (local, national, global) that
may be of concern to geographers.
Slide 8
Slide 9
So lets start with some basics.. Global Scale World Population
Growth
Slide 10
When we talk about world population growth, there is a simple
formula that determines the population size This formula can be
expressed as: Or, births - deaths
Slide 11
On a piece of paper, draw a line- graph that represents what
you think world population growth looked like from the year 0 to
2010 Use Time as the X axis and population size as the Y axis
Slide 12
Now, on your graph, write down how many people you think are
added to the world population (today) each year.
Slide 13
Lets see how accurate you were CLICK HERE
http://www.ined.fr/jeux.php?_movie=/flash/popu2/EN/IN
ED_ANIM.swf&titre=How%20will%20the%20world%20p
opulation%20change%20in%20the%20future?&lg=en Pop quiz: Around
what year did the earth have its first Billion people?
Slide 14
Sources: UN Population Division and Population Reference
Bureau.
Slide 15
What was first to change (for world population growth) birth
rates, or death rates? Why might this have happened? Write a simple
explanation on a piece of paper.
Slide 16
Quiz: What is doubling time, and what has been happening to
doubling time more recently in history? What is the replacement
rate? What happens when replacement rates are exceeded?
Slide 17
Lets look at pop growth spatially Click Here Pay attention to
population distribution. By the 1 st Billion people, how would you
describe the population distribution?
Slide 18
Thinking Spatially Using a map, look at todays world population
distribution. Suggest reasons for Canada, Australia, Africa, and
South Americas population distribution.
Slide 19
Review terms: Crude Birth Rate: Crude birth rate is the # of
childbirths per 1,000 people per yearchildbirths CBR does not
really tell us that much about an individual country but it is
helpful in other calculations. There tends to be a negative
correlation between birth rates and measures of economic prosperity
at the national level.
Slide 20
Crude death rate: The number of people that die in a year in a
given populationmost often a country. Historically, death rates
tend to fall before birth rates, which has the effect of increasing
population growth.
