http://www.teachengineering.org/view_lesson.php?url=collection/cub_/lessons/cub_air/cub_air_lesson08.xmllessontext/xmlIntegrated Teaching and Learning Program, air pollutionCFCchlorofluorocarbonsozoneairpollutionatmosphereenvironmentChlorofluorocarbonsOzoneOzone layerPaleobiologistTroposphereStratosphereUltraviolet radiation

Students explore the causes and effects of the Earth’s ozone holes through discussion and an interactive simulation. In an associated literacy activity, students learn how to tell a story in order to make a complex topic (such as global warming or ozone holes) easier for a reader to grasp.

Once our awareness was heightened about the human-created pollutants that cause the depletion of the Earth’s protective ozone layer, engineers began to address the problem. They invented new technologies and/or re-designed old technologies to entirely avoid producing the harmful CFCs. Pervasive changes to design, manufacturing processes, regulations and practices have reduced the US CFC emissions dramatically. Some changes included new types of refrigerator coolants and the elimination of many aerosols. The modern engineer always keeps long-term sustainability in mind as a design objective. Describe the benefits and disadvantages of ozone.Understand and explain the different processes that destroy ozone in the Earth’s atmosphere. Develop an understanding of the global trend towards ozone depletion and recovery.Explain how engineers are trying to help reduce ozone depletion.50TeachEngineering.orgAmy KolenbranderJanet YowellNatalie MachMalinda Schaefer ZarskeDenise Carlsonhttp://www.teachengineering.org/collection/cub_/lessons/cub_air/cub_air_lesson08_ozone.pdfGlencoe Science – An Introduction to the Life, Earth and Physical Sciences. OH: Glencoe/McGraw-Hill, 1999.http://www.chm.bris.ac.uk/motm/ozone/high.htmKerrod, Robin. Let’s Investigate Science – The Environment. New York: Marshall Cavendish Corporation, 1994.http://www.meteor.iastate.edu/gccourse/chem/ozone/chlorinated.htmlMarkle, Sandra. The Kids’ Earth Handbook. Atheneum, NY: Maxwell Macmillan International, 1991.http://isc.faqs.org/faqs/ozone-depletion/http://www.ec.gc.ca/ozone/http://www.ec.gc.ca/ozone/S1141719International_Technology_Education_Association-ITEA_STL_StandardsTechnologyF. Decisions to develop and use technologies often put environmental and economic concerns in direct competition with one another.68S11424E8ColoradoScienceb. Identify evidence suggesting that atoms form into molecules with different properties than their components 66S114254EColoradoSciencea. Interpret and analyze data about changes in environmental conditions - such as climate change - and populations that support a claim describing why a specific population might be increasing or decreasing 66United StatesCopyright 2012 - Integrated Teaching and Learning Program, College of Engineering, University of Colorado at Boulderhttp://www.teachengineering.org/policy_ipp.phphttp://www.teachengineering.org/2011-12-196Teacher