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Download Clicker quiz: What do we know about climate change?
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Clicker quiz: Carbon and the climate created by Sarah Wise, CIRES Education and Outreach, for use by faculty at U. of Colorado at Boulder for Focus the Nation, Jan. 31, 2008 1. Which cycle does this diagram represent? a. Carbon b. nitrogen c. water d. phosphorous Source of Diagram: The Blue Planet, Skinner et al., 1999 1. Follow up discussion: What clues from the diagram did you use to choose your answer? 2. How do human activities affect the carbon cycle? a. b. c. d. add pollution to the cycle add carbon to the cycle transfer carbon from earth to atmosphere cause the cycle to slow or stop 2. Follow up discussion: Why are all but c. incorrect? a. b. c. d. add pollution to the cycle add carbon to the cycle transfer carbon from earth to atmosphere cause the cycle to slow or stop 3. What do these two graphs show? a. CO2 increase is causing warming b. CO2 increase is strongly correlated with warming source of diagrams: Wikipedia: Keeling curve, global warming 3. Follow up discussion: what is different between correlation and causation? source of diagrams: Wikipedia: Keeling curve, global warming 4. What do these diagrams suggest about the cause of global warming? a. increased greenhouse gases (e.g. CO2) can cause warming b. natural variation in the sun is not correlated with recent warming source of diagrams: c. both a. and b. Wikipedia, global warming 4. Follow up: Has anyone learned about other possible explanations of warming, based on known causes? Discussion questions: -- is there a difference between global warming and climate change? -- how do you think climate change will affect your life? -- how do you think the problem of climate change may be resolved? -- what do your friends and family think about climate change? -- has the issue of climate change made you want to make changes in your life?