lab 23

Climate Change PRE-LAB QUESTIONS 1. Briefly describe the difference between weather and climate . Weather covers an area while climate covers a region. 2. Natural climate change usually occurs over long periods of time, whereas ___ climate change refers to changes that occur over shorter time scales as a result of human activities . Anthropogenic 3. ___ works by absorbing infrared radiation, thus trapping heat in Earth’s atmosphere. a. Albedo b. The carbon cycle c. A greenhouse gas d. Ocean acidification 4. One of the biggest indicators of human impact on climate is the amount of ___ in the atmosphere. a. Calcium carbonate b. Carbon dioxide c. Water vapor d. Oxygen 5. What is the term for the percentage of solar radiation that is reflected back into space from the Earth? Albedo 6. Ocean acidification is a major problem for organisms that make their shells/tests out of what chemical compound? Carbonate ions ©eScience Labs, 2018

Climate Change EXERCISE 1: ALBEDO IN ACTION Data Sheet Table 3. Temperature Data for Beakers Containing White Sand Beaker Covered with Plastic Wrap Time (min) 0 2 4 6 8 10 12 14 16 18 20 Temp. (°C) 27 27 28 29 29 31 31 33 33 34 35 Beaker Covered with White Paper Time (min) 0 2 4 6 8 10 12 14 16 18 20 Temp. (°C) 27 27 27 28 30 31 31 32 33 34 34 Table 4. Temperature Data for Beakers Containing Soil Beaker Covered with Plastic Wrap Time (min) 0 2 4 6 8 10 12 14 16 18 20 Temp. (°C) 27 27 27 28 28 29 29 30 31 31 32 Beaker Covered with White Paper Time (min) 0 2 4 6 8 10 12 14 16 18 20 Temp. (°C) 27 27 28 28 29 29 30 31 31 32 33 Table 5. Temperature Data for Beakers Containing Water Beaker Covered with Plastic Wrap Time (min) 0 2 4 6 8 10 12 14 16 18 20 Temp. (°C) 28 27 27 27 27 27 26 26 26 26 26 Beaker Covered with White Paper Time (min) 0 2 4 6 8 10 12 14 16 18 20 Temp. (°C) 28 28 27 27 27 27 27 27 27 26 26 ©eScience Labs, 2018

Climate Change Exercise 1 Post-Lab Questions 1. Compare the data from your three graphs and summarize your findings. On all three experiments, the beaker with the plastic wrap had a higher temp then one with paper. 2. Compare and contrast the conditions of your model greenhouses to the actual “global greenhouse” that we have on Earth. Trough it us slightly inaccurate, you could say that it can be a miniature version of prototype. 3. Based on your results, what kind of conditions on Earth would cause warmer global temperatures? What conditions would cause cooler global temperatures? If gases trapped heat in the outer layer, then earth as a whole would get warmer. ©eScience Labs, 2018