```Grade 9 Academic Geography - Unit 3 Practice
Demographics
1. Define the “Rule of 70&quot;.
2. Calculate Doubling Times for the following countries. The first one is done for
you.
Country
Growth Rate
1.1%
Afghanistan
7.6%
4.0%
Ukraine
-0.1%
Mexico
2.2%
Doubling Time
70 / 1.1 = 64 years
3. What do the Doubling Time rates tell you?
4. What is Dependency Load? What age groups are included? What are the
problems associated with a high dependency load?
5. Define Population Distribution
6. Define Population Density
7. Using the formula for Population Density, calculate the density for each country
Population Density = Total Number of People living in the region / land area in km 2
Use the Population Density Formula to calculate the 2000 Population Densities for the
following countries.
Country
2000 Population
Land Area
Density
(km2)
(people / km2)
Australia
19,169,083
7,617,930
129,194,224
133,910
31,281,092
9,220,970
Japan
126,549,976
374,744
Monaco
31,693
2
Mongolia
2,650,952
1,565,000
United States
257,562,673
9,158,960
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Referring to your answers, how can a country have a Low Population Density?
…High Population Density?
What does Population Density tell you?
How does density differ from distribution? Use Canada’s Population Density and