Grade 9 Academic Geography - Unit 3 Practice Demographics 1. Define the “Rule of 70". 2. Calculate Doubling Times for the following countries. The first one is done for you. Country Growth Rate Canada 1.1% Afghanistan 7.6% Chad 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 Bangladesh 129,194,224 133,910 Canada 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 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 your knowledge of Canada’s Population Distribution to explain your ideas.