Access Prior Knowledge Lesson 2: What are other energy sources? Opening Activity Open Science textbook to page 306. Open Science workbook to page 100A to review home learning. Open Science folder to review vocabulary words and outline for the chapter. Open Science journal and answer the following question: 1. Give an example of a renewable and nonrenewable resource and explain how we use it in everyday life. Review Content Cards and Q-Cards in bin, sharing with partners quizzing each other quietly. Log in to clickers using student ID number. Be ready to review home learning when timer goes off. Don't forget to write your home learning in your agenda page 101A.
Do you agree with the statement? 1 Energy from sunlight can be used for heat and electricity. Yes No
Do you agree with the statement? 2 The power of wind is used to turn turbines and create electricity. Yes No
Do you agree with the statement? 3 Hydroelectric power plants pollute. Yes No
Do you agree with the statement? 4 Geothermal energy can make electricity only during the evening hours. Yes No
Solar Energy Solar energyis energy from sunlight and uses solar cells use sunlight to make electricity. Solar energy is renewable and it does not pollute the environment. But we cannot get solar energy at night or on cloudy days, that is why we use it in a limited way. 1. Also, changing solar energy into electricity is expensive and can also create dangerous wastes. Second paragraph pg. 306
Wind Energy Wind turbines are used to change wind energy into electricity and do not cause pollution. 1. The speed of the blades does not have anything to do with how much energy it produces, but wind turbines spin faster in light winds than old windmills did. 2. Some disadvantages are the wind does not blow all the time and birds can die if they fly into the turbines. First paragraph pg. 308
Moving Water Hydroelectricpower plants use moving water to make electricity and usually built in dams. 1. Parts of generators spin as water moves through the dam. As they spin, they make electricity. Hydroelectric plants do not use fuel to make electricity so they do not create pollution, and factories were built near rivers to use the moving water. 1. The area also has to have a place where a lake can form behind a dam. These lakes flood animal and plant habitats and can also harm fish. First paragraph pg. 310
Nuclear Energy Nuclear power uses hot uranium to make steam, which makes electricity. 1. Nuclear power plants use less fuel than power plants that use coal or oil and they do not produce smoke. 2. Nuclear power plants are expensive to build, they make harmful wastes and uranium is a rare metal and a nonrenewable energy source. Second paragraph pg. 312
Geothermal Energy Geothermalenergy is made from high temperatures inside the Earth. 1. One way this energy is used is to pour water down deep holes into hot rock so that hot water or steam rushes to the surface to make electricity. 2. Geothermal energy can make electricity all day, all night and can be used all year long. 3. But geothermal energy can only be made in places close to the surface of the Earth and the steam can also cause pollution. Fourth paragraph pg. 312
Energy of Biomass Biomassis material that was recently alive usually found in garbage, which we will always have, therefore it is renewable. Biomass is burned to make electricity, so it does make air pollution. First paragraph pg. 313 Wind Energy
MatchQuest Moving Water Nuclear Energy Geothermal Energy Energy of Biomass Solar Energy Wind Energy
TextQuest 1. How do the speed of the blades impact the amount of energy is produced in a windmill? 2. What is a disadvantage of using solar energy? 3. How do hydroelectric power plants work? 4. What are some advantages of geothermal and wind energy? 5. Solar panels collect what kind of energy? 6. What material does nuclear energy require? Don't forget to write your home learning in your agenda page 101A.