Trade-in or Trade-off: Energy Alternatives - Grade 11 Ohio Standards Connection: Science and Technology Benchmark A Predict how human choices today will determine the quality and quantity of life on Earth. Indicator 6 Research sources of energy beyond traditional fuels and the advantages, disadvantages and tradeoffs society must consider when using alternative sources (e.g., biomass, solar, hybrid engines, wind and fuel cells). Lesson Summary: In this lesson the students will review non-renewable (traditional) and renewable (alternative) energy resources and examine the trade-offs associated with each type. In groups of two or three, they will select and research an alternative resource, an application of that resource, and then present their findings to the class in an oral presentation using a visual (poster). Estimated Duration: Two hours Commentary: Students will develop an understanding of the availability of their alternative energy source, how it works, the environmental and societal impact, and its application in the real world. They will also critically examine issues having to do with their particular energy production or usage and formulate an approach to making decisions about their future energy usage and consumption. Upon completion of all of the presentations, posters will be prominently displayed so that the connectedness of their products can be viewed and examined. As a final step, each student will write a reflective essay and complete a self-evaluation of their performance. Pre-Assessment: Print questions found in Attachment A, PreAssessment, and distribute to students. Direct students to answer the questions provided. Scoring Guidelines: See Attachment B, Pre-Assessment Scoring Guidelines, to assess student responses. 1 Trade-in or Trade-off: Energy Alternatives - Grade 11 Post-Assessment: Evaluate students based on their initial journal writing responses, thoughtful participation in class discussions, thorough and accurate research and presentation of information about their topic, creation of a research-based poster, and completion of a reflective essay describing how their selected resource findings affected them personally. OR Evaluate each student’s reflective essay based on EITHER: a. The law of conservation of energy: OR b. The following quote by science fiction writer Isaac Asimov: "The law of conservation of energy tells us that we can't get something for nothing but we refuse to believe it." Scoring Guidelines: See Attachment C, Post-Assessment Scoring Guidelines, to assess student responses. Instructional Procedures: 1. Have the students reflect in their journal ways they use different energy sources to produce electricity in a typical day. 2. Have them identify those activities that are dependent upon non-renewable resources (i.e., fossil fuels such as coal, natural gas and oil). 3. Have students select one of these daily activities and suggest how they would use an alternative resource such as solar power, wind, etc., instead of a fossil fuel. 4. After the students have completed their journal writing, have some students share their suggestions with the class. 5. Follow up by a class/group discussion of the following questions: Where does each non-renewable energy source originate? Are public lands impacted by these resources? What are some examples of alternative renewable energy resources? Speculate how renewable energy resources can be used instead of fossil fuels. Why are we largely dependent on fossil fuel energy sources despite the feasibility of renewable energy sources? What prevents or discourages consumers from using alternative energy sources? 6. Divide the class into small groups of two or three students. Assign each group one type of alternative energy power source. 7. Distribute copies of Attachment D, Research Guidelines. 8. Give students time in and out of class to gather information about their energy source. Instructional Tip: As students gain and comprehend this new knowledge, try to have them recognize any biases in their own thinking or on the part of the authors they have read. 9. Have groups give a 10-15 minute oral presentation using a poster as a visual. After all the presentations are completed the students are to make a prediction about what will be the world's major source of energy a hundred years from now. Evidence should be shown that their alternative energy source could offer a viable alternative to the more hazardous 2 Trade-in or Trade-off: Energy Alternatives - Grade 11 and/or less plentiful sources. Instructional Tip: If time does not permit group presentations, do a gallery walk instead. Display all posters and allow students to learn from each other’s work. 10. Using the criteria in the evaluation rubric, have students assess their own performance. Ask students to provide details in support of their personal assessment. Differentiated Instructional Support: Instruction is differentiated according to learner needs, to help all learners either meet the intent of the specified indicator(s) or, if the indicator is already met, to advance beyond the specified indicator(s). Provide students with a copy of their summative assessment tasks. Provide students with a concept map to organize and keep track of important terms and definitions. Provide students with research strategies and a list of sample topic suggestions. Extensions: Conduct a similar research project investigating what methods people used in the past in order to meet their energy needs. Investigate significant changes in the availability of renewable resources due to global warming. Design a cost/benefits and maintenance/disposal analysis of a resource application (e.g. windmill farms). Homework Options and Home Connections: Have students ask family and friends about their daily energy usage. This information could be used as a consideration in their predictions about energy usage in the future. Materials and Resources: The inclusion of a specific resource in any lesson formulated by the Ohio Department of Education should not be interpreted as an endorsement of that particular resource, or any of its contents, by the Ohio Department of Education. The Ohio Department of Education does not endorse any particular resource. The Web addresses listed are for a given site’s main page, therefore, it may be necessary to search within that site to find the specific information required for a given lesson. Please note that information published on the Internet changes over time, therefore the links provided may no longer contain the specific information related to a given lesson. Teachers are advised to preview all sites before using them with students. For the teacher: Textbooks and reference materials such as government reports and scientific journals, and the Internet. For the students: Poster board, markers, pens. 3 Trade-in or Trade-off: Energy Alternatives - Grade 11 Key Vocabulary: alternative energy bio-fuel biomass ecological impact energy production energy reserves fossil fuel geothermal energy hydroelectric energy nonrenewable resource renewable resource resource allocation sustainability technology trade-off traditional fuels Technology Connections: Conduct Internet research on alternative energy resources. Research Connections: Marzano, R., Pickering, D., Pollock, J. (2001).Classroom Instruction that Works: ResearchBased Strategies for Increasing Student Achievement, Alexandria, Va.,: Association for Supervision and Curriculum Development. Cues, questions and advanced organizers help students retrieve what they already know about a topic. Activating prior knowledge is critical to learning new concepts. Rezba, Richard J., et al. Learning and Assessing Science Process Skills. Dubuque, Iowa: Kendall/Hunt, 1995. Prompts (cues) for journal entries allow for inference and prediction. Attachments: Attachment A, Pre-Assessment Attachment B, Pre-Assessment Scoring Guide Attachment C, Post-Assessment Scoring Guide Attachment D, Research Guidelines 4 Trade-in or Trade-off: Energy Alternatives - Grade 11 Attachment A Pre-Assessment 1. List, as a group, the six most common alternative (renewable) energy sources: 2. In your science journals rank order your personal knowledge of the energy sources with number one being the most knowledgeable and number six the least. a. Define each alternative energy source. b. Speculate how these renewable resources can be used instead of fossil fuels. c. Predict what will be the major source of energy in the year 2103 and provide a rationale. 3. Using the vocabulary list below and the skeletal grid of the concept map, complete to show the relationship of the terms. Biomass Coal Fossil fuels Geothermal Oil Hydroelectric Natural gas Nonrenewable resource Nuclear Renewable resource Solar Tidal Wind 5 Trade-in or Trade-off: Energy Alternatives - Grade 11 Attachment B Pre-Assessment Scoring Guide The concept map provided is based on current scientific knowledge. Nuclear energy used today is considered nonrenewable. However, breeder reactors are a renewable resource because non-fissionable fuel is turned into fissionable fuel. In other words, more fuel is produced than consumed. Assessment Activity Journal entry and concept map Level 4 Scientific knowledge about resource uses and implications are accurate and thoughtfully explained. Level 3 Scientific knowledge about resource uses and implications are accurate. Prediction Provides major objective reasons and significant justification and evidence. Provides objective reasons and supporting evidence. Level 2 Scientific knowledge about resource uses and implications have occasional inaccuracies or are simplified. Provides some objective reasons and some supportive evidence. Level 1 Scientific knowledge about resource uses and implications have major inaccuracies or are overly simplified. Provides subjective, irrelevant, inaccurate and/or unsupportive evidence. 6 Trade-in or Trade-off: Energy Alternatives - Grade 11 Attachment C Post-Assessment Scoring Guideline Assessment Activity Journal entry Level 4 Scientific knowledge about resource uses and implications are accurate, and thoughtfully explained. Level 3 Scientific knowledge about resource uses and implications are accurate. Use of resources Extensive Web sites and many useful resources. Adequate Web sites and good resources. Exceptional Completion of project/presentation quantity of work and quality of evidence; coordinates the entire team. Reflective essay Provides major objective reasons and significant justification and evidence. Level 2 Scientific knowledge about resource uses and implications have occasional inaccuracies or are simplified. Some Web sites and resources are recorded. Level 1 Scientific knowledge about resource uses and implications have major inaccuracies or are overly simplified. Work is high quality; facilitates the work of the team. Work shows some evidence of error, but doesn’t interfere with others’ work. Does not hinder progress of the team. Provides objective reasons and supporting evidence. Provides some objective reasons and some supportive evidence. Provides subjective, irrelevant, inaccurate and/or unsupportive evidence. Provides minimal resources. 7 Trade-in or Trade-off: Energy Alternatives - Grade 11 Attachment D Research Guidelines 1. Select an energy source Suggested Topics Wind energy Hydroelectric energy Geothermal energy Biomass energy Tidal energy Solar energy Hybrid systems Other 2. Provide the following information for your energy source or application: a definition and one comparison to a traditional fuel; three examples of how the source is used; three advantages and three disadvantages of using the source discussion of controversies surrounding energy sources such as societal costs and benefits, developmental problems, efficiencies and limitations, potential safety and environmental impacts and policy implications; accurate, numerical data on the quantities of energy able to be produced; examples of usage in this country and around the world; discussion of its suitability in Ohio; end notes with citation of sources. 3. Use resource books, government reports, magazine and newspaper articles, scientific journals and credible Web sites. 8