<p>APES Population Growth - Rates and Graphs Name ______Vernier Excel file - Population Models.xls, paper 3 cyc x 2mm/div 1. Teacher will have either emailed the file to you or placed it on the computers Generation Population Rate 1 Rate 2 Open Population … Model.xls 2. What is the starting population ? ______Growth rate ______= _____ % 0 3. What is the shape of the graph on the screen? ______10 The x axis is ______THINK OF THIS AS TIME !! 20 4. Teacher will give you 2 rates to work with ______30 To change the rate simply type the new number in the growth rate box 40 For your 2 rates fill in the data table 50 5. Now make your own graphs using 2 types of graph paper 60 a) standard and semi-log - teacher will explain how to use semi-log 70 NOTE - increments change in the middle of each decade 80 b) draw both rates as 2 separate lines and label them clearly 90 c) describe the shapes i) linear paper ii) semi-log paper 6. Use your graphs to estimate DOUBLING TIMES Population TIME (Generation ) Double time and complete the table Rate 1 Rate 2 Rate 1 Rate 2 7. Math Review -basic exponential growth equation rt 20 XXXX XXXXX Nt = No e No is ______40 80 Nt is ______r is ______Average Doubling time t is ______</p><p>For doubling Nt = </p><p>8. If the population of a country is 2 billion how long will it take to reach 4 billion - SHOW WORK !! a) growth rate 1.5% b) growth rate 2% Time Population 0 20 5 28 9. Use the table at the right to estimate - SHOW WORK! 10 40 15 57 a) the doubling time 20 80 b) the growth rate c) The population after 40 years</p><p>PopIntro 4/30/18</p>