Human Population Growth Graphing Activity



5997575-19494500Human Population Growth ActivityDirections:Graph the population growth of human population growth and use it to predictfuture growth and to identify factors that determine population growth.A. Human Population GrowthThe earth’s known human population size is reported in the table below:Table 1. Earth’s Human Population SizeYear A.D.Number of People(in billions)1650.501750.7018501.019252.019562.519663.319703.619743.919764.019804.419915.520006.020046.420086.720117.0After graphing, discuss and record the following with your group:1. It took 1,649 years for the world population to double, going from 0.25 billion people to 0.50 billion people. How long did it take for the population to double a second time? _____________2. How long did it take for the population to double a third time? A fourth time? ____________3. Based on your graph, in what year will the population reach 8 billion? 4. What factors contributed to the world's overall population growth in the last 150 years?5. As population grows, land, food and water become limited. How do you think this will impact the future trend of population growth? What do you think the graph will look like as a result? B. Effect on Human Population SizeRead the CAUSE on the left hand side of the table below. Then, predict the EFFECT of the cause in the right-hand column. For the last one, fill in the CAUSE portion of the table.CauseEffectDuring the 1920s, many Eastern European peopleleave their countries to come to the United States.During the 1920’s, many Eastern European peopleenter the United States.Many more babies were born in the post-World War II era than in the pre-World War II era.China imposed a “one child only” policy in 1979 which is still in effect today. The 1918 flu pandemic killed somewhere between 20- 40 million people.Based on CAUSE and EFFECT chart, discuss and record the following:1. Which factors tend to increase the size of population?2. Which factors tend to decrease the size of population? ................
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