1. Obj. 1.9 Interpret patterns and processes at different scales
September 19, 2017
Obj. 1.9 Interpret patterns and processes at different scales

2. Distribution and Density

3. Distribution
•Everything on the Earth’s surface has a physical location and is organized in space

4. Density
•Density is how often an object occurs within a given area or space

5. Population Density
Looks at how many people occupy a given amount of space

6. Population Density at Various Scales
The population of Canada is about 35,000,000
The area of Canada is 3,855,000 sq miles
This makes the population density about 8 people per square mile

7. Population Density at Different Scales
The population of Ontario is about 13 million.
The area of Ontario is 415,000 sq miles.
The population density is about 31 people per sq mile.
The population of Nunavut is about 35,000.
The area of Nunavut is 808,000 sq miles.
The population density is .04 people per square mile.

8. Why is population density misleading?

9. Physiological Density
•Refers to the number of people divided by the arable (farmable) land

10. Comparative Physiological Densities
Japan:
Population Density:
868 people per square mile
Physiological Density:
7,593 people per square mile
mLA
Australia:
Population Density:
8.5 people per square mile
Physiological Density:
107 people per square mile s

11. Agricultural Density
•Agricultural density is the amount of arable land divided by the number of farmers in a given area

12. Calculating Agricultural Density
The Netherlands
Population Density:
1, 070 people per sq mile
Total number of farmers: 211,000
Total Land: 16,033 sq miles
Arable Land: 55%
What is the agricultural density of the Netherlands?
The United States
Population Density:
86 people per square mile
Total number of farmers: 3,200,000
Total Land: 3,796,742 sq miles
Arable Land: 44%
What is the agricultural density of the United States?

13. Age-Sex Pyramids

14. Age-Sex Pyramids

15. Age-Sex Pyramids at Different Scales
The United States-2016
Lawrence, Kansas-2014

16. Questions Please answer the following questions in your notebook.
Which measure of density is the most informative for Geographers?
What would an age-sex diagram of Sun City, Arizona look like? (It is a senior citizen community)