Human Geography. Population Distribution, Density, Dependency Ratio, and Pyramids. April 15, 2014. World Population Growth: Is it Sustainable?. What is it?. Population Distribution. A Population Distribution shows the arrangement of people in a given space .
Population Distribution, Density, Dependency Ratio, and Pyramids
April 15, 2014
A Population Distribution shows the arrangement of people in a given space.
World population distribution is uneven.
Places such as Antarctica or the Canadian Arctic are less habitable and thus, sparsely populated.
Places such as Europe or Canada’s Southern Border offer warmer temperatures, and are thus more densely populated.
What is it?
In comparison…. World population density = 53 people per square kilometer
Canadian population density = 3.5 people per square kilometer
# of people per km2
What are the most densely populated areas in BC?
A visual representation of a population structure
Vertical Axis - Age Groups
Horizontal Axis – Percentage / number
To the right
To the left
The population pyramid displays the age
and gender structure of a country or given area
Usually, but not always,
Given in a percentage to make for easier
comparisons between countries
Population Pyramid of Nigeria
Population Pyramid of Sweden
Allow easy comparison between population structures
Assist in Policy Planning
future housing estates
A. Drawing a Population Pyramid
B. Analyzing a Population Pyramid
2. Which age-sex groups are the largest and smallest?
Largest Age-Sex Group: Male, age 50-54 = 3.9%
Smallest Age-Sex Group: Male, age 95+ = 0.03%
3. Compare the percentage of males and females age 70+
There are more females because females live longer.
4. What noticeable/outlying age-sex groups can you identify and what historical events can their significance be attributed to?
High Population aged 45-60 = THE BABY BOOMERS
(born 1950s and 1960s)
High Population aged 20-35 = THE BABY BOOM ECHOERS
(born 1970s and 1980s)
Think, Pair, Share!!!