Lecture_03 - CHM 115-A If this is your first lecture, get a...

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Unformatted text preview: CHM 115-A If this is your first lecture, get a course packet for CHM 115-A from BRWN 1144 and read it. Web site: http://www.chem.purdue.edu/chm115/ WebCT: http://www.itap.purdue.edu/tlt/ecourses OWL: http://owl.thomsonlearning.com Download lectures 1 and 2 from the WebCT site. Read them. HW Intro to OWL due Wednesday WRR office hours: 9:30 am Tuesday & Wednesday So, whats next? Science Hypothesis conjecture to be tested; unproven Theory a consistent explanation for a body of experimental data NOT a guess; no such thing as just a theory Law a description for a set of natural phenomena or observations with no known exception does not necessarily have explanation NOT a theory that graduated to become a law M o d e l S e t o f h y p o t h e s e s , d a t a , & i n f e r e n c e s The variables in various models include: Population growth rate Economic development Energy use Efficiency of energy use Mix of energy technologies IPCC Special Report on Emission Scenarios The emission scenarios of the IPCC Special Report on Emission Scenarios for 1990 - 2100 IPCC climate models start in 1990 and end in 2100. In all three, the global population rate rises during the first half of the century, then declines. The A1B model: rapid economic growth and increased equity the reduction of regional differences in per-person income. New and more efficient technologies that do not rely heavily on a single energy source. The A1F1 model: same as A1B, but assumes the continued use of fossil fuel-intensive technologies. The B1 model: the world moves rapidly from a producer- consumer economy toward a service and information economy. There is a reduction in the use of raw materials, and an emphasis on clean and efficient technologies and improved equity. Models The emission scenarios of the IPCC Special Report on Emission Scenarios (SRES) A1 The A1 storyline and scenarios: a future world of very rapid economic growth global population that peaks in mid-century and declines thereafter rapid introduction of new and more efficient technologies....
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This note was uploaded on 04/07/2008 for the course CHEM 115 taught by Professor L during the Fall '02 term at Purdue University-West Lafayette.

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Lecture_03 - CHM 115-A If this is your first lecture, get a...

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