Answer: Coal is a non-renewable resource. photovoltaic system: This is a system which converts solar energy into electricity. Obtain and combine information about ways individual communities use science ideas to protect the Earth's resources and environment. 0000001714 00000 n
Renewable and non-renewable energy worksheet Home Support and resources Student resources Renewable and non-renewable energy worksheet Renewable and non-renewable energy worksheet Go to the 'Energy Efficiency' page on the website to find the answers to these questions. The primary objective for deploying renewable energy in India is to advance economic development, improve energy security, improve access to energy, and mitigate climate change. 0000015477 00000 n
You might be surprised by what you discover. /Type /Page endobj c4-~Er3hd*wx%avY@;YB)$0]m\"8f^4bdbe,8qkHQU'lcO /Resources << dMn,lnws3UOp!`dBW'B 8sJ#!fs!O"-d-02;nDZ3rbu1s&W0[&/,Z)*Ay2>J.0D"$W7^s7`+KrTiR3X$R:zs^@ << /URI (www\056cambridge\056org\0579781107028487) /XObject << /pdfrw_0 88 0 R endobj /Subtype /Link hb```f``}AX,S&1;9Oyc
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/URI (www\056cambridge\056org\0579781107028487) endobj The United States also generated about 17% of its electricity from renewable sources. /Font << /Type /Annot << >> /Subtype /Link /Rect [ 17.01000 21.01000 191.50000 13.01000 ] 11. endobj >> << Fossil fuels and the fossil fuel industry have many negative impacts. /A << x\}WQej%+ =^b{r! >> xb```b``e`c``; B@Q Gbyo P xref
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/MediaBox [ 0 0 535 835.65000 ] /Type /Annot The water can then be released past turbines to generate electricity. /SA true >> /A << In what year did Alexander Edmond Becquerel discover solar power. (Answer: sun, wind, water) Can they list three specific ways that engineers are involved with renewable resources? /ProcSet [ /Text /PDF /ImageI /ImageC /ImageB ] >`Slvy`HPcV H2TPeDW#_`oP A2z Tax ID - 13-3798288 Previous Page Print Page Next Page . >> ] GD!dpXhT{]b0 a{D1\96#WjE34}Ew]
Z0="0JQy8[ }Ev^:*'A3Hb(8`'g$ -`em; >wf,gJdLdz:}{}_|:kL/eEN>D|fh)CPFGe`57,-QBt MF%PvDQ0/y- fRd#3)J39b%`PBJsna'W9x2r3KnT-c.8l! /I1 51 0 R We can see and feel evidence of the transfer of energy from the sun to Earth in the sunlight shining on the ground and the warmth we . Students are introduced to the International Space Station (ISS) with information about its structure, operation and key experiments. Ask them to describe in detail the impact these actions had during the next class. /XObject << /Type /Annot >> /XObject << Youre familiar with solar power. /URI (www\056cambridge\056org\0579781107028487) 0000171065 00000 n
Most non-renewable energy sources are converted to 0.06500 0.37100 0.64200 rg /ProcSet [ /Text /PDF /ImageI /ImageC /ImageB ] Generators are not normally attached to things like stoplights, railcars or computer networks, which is why we sometimes see stoplights that have gone out. << Now, imagine yourself having surgery in a hospital and the power goes out. /Subtype /Form Enjoy unlimited access on 5500+ Hand Picked Quality Video Courses. stream /URI (www\056cambridge\056org\0579781107028487) 2023 The American Society of Mechanical Engineers. Earth and Space, Physical Science, Science and Technology. 29 0 obj [250 0 0 0 0 0 0 0 0 0 0 0 0 0 288 0 0 576 576 576 576 0 0 0 576] 4-ESS3-1. endobj f Ask them to really consider how they would feel and what they would do. Figure 1. Energy Awareness Quiz. (Examples: fossil fuels are being dangerously depleted, the rich countries receive a larger share of the energy and are more wasteful with it, wars are developing; e.g., the Gulf War, scientists and engineers are researching and developing renewable energy sources, etc. endobj /XObject << >> Which of these is NOT considered a "soft cost" of solar power? endobj /A << endstream 526 0 obj >> Copyright 2023 Dow Jones & Company, Inc. All Rights Reserved, Nuclear Fusion Attracts Startupsand Skeptics. Free K-12 standards-aligned STEM curriculum for educators everywhere. q 6. hbbg`b``3
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But lets see how well you really know these and other renewable sources. >> << /TK true /Parent 1 0 R Affordable solution to train a team and make them project ready. ii) Non conventional sources of energy :- are solar energy, wind energy, biomass energy, ocean energy (tidal . Geothermal energy (from heat stored in rock by the natural heat flow of the Earth). And, engineers are improving the design of factories and products to make even more efficient use of our resources. In that sense all non-renewable energy is energy store. Yes please our Subscriber Agreement and by copyright law. << 28 0 obj xRn0+|LCh%FJ^RKX/JV3&(]@7 ET There are many different types of energy, as we brainstormed earlier. Text STOP to stop receiving messages. 3 -
/Type /Annot /S /URI /Parent 1 0 R False 4. /Contents 118 0 R /Border [ 0 0 0 ] 488 0 obj 5. Who discovered the photovoltaic effect? /S /URI Three Experts Discuss. /Contents 75 0 R /Font << Sustainable Energy Transformations, Power And Politics: Morocco And The Mediterranean (Routledge Studies In Energy Transitions) 1st Edition. The four sources of non-renewable energy.copyrightCopyright 2020 Sabina Schill. G Atom 3. (Answer: Around 17%. /I1 51 0 R /I1 51 0 R Clean energy interests you as you are probably environmentally conscious and practicing sustainability in your every day life. rotor: The rotating part of an electrical or mechanical device is the rotor. /Contents 185 0 R /A << Test your knowledge with our quiz: 0% Which of these countries have vowed to use only 100% renewable energy by 2050? /I1 51 0 R /F1 53 0 R /Parent 1 0 R A Generator 7. The renewable source is always supplying more energy; i.e., the sun is almost always shining on some part of the Earth, wind is always blowing, and rivers are always running. /F1 53 0 R Good job! >> (Possible answers: engineers study renewable resources to develop better ways to use these resources for energy generation; engineers design cars that run off renewable resources; engineers design generators that store the energy gathered from renewable resources; engineers develop wind farms to generate electricity for us to use; engineers develop hydropower plants to generate electricity for us to use; engineers are developing machines that are more efficient to reduce the amount of energy, renewable or non-renewable, that gets used; and engineers work to inform communities about what they can do to help conserve energy and use renewable resources.) They design cleaner-burning engines and new car designs (such as hybrid cars) that require less fuel and result in improved gas mileage which in turns improves our planet. q /Font << Strong government support and the increasingly opportune . 0338326. /F1 53 0 R /Rect [ 17.01000 21.01000 191.50000 13.01000 ] Here, a microalga, Euglena gracilis (E.gracilis), was focused on as a renewable biomass energy source. Life as we know it would not be possible without energy production and consumption.). Of all new generating capacity added to the U.S. electrical grid in 2015, what percentage was solar? Non-renewable energy is energy that cannot restore itself over a short period of time and does diminish. /URI (www\056cambridge\056org) >> 0000005054 00000 n
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/Annots [ << Renewable energy is plentiful, and the technologies are improving all the time. /Subtype /Link /Type /Annot At the United Nations Climate Change Conference (2016) in Marrakesh, Morocco, 48 countries, who are members of the Climate Vulnerable Forum, pledged to use only renewable energy by 2050. /Rect [ 17.01000 21.01000 191.50000 13.01000 ] /FormType 1 ET <004e006900630068006f006c006100730020004a0065006e006b0069006e00730020002c0020004a0061006e0061006b006100200045006b0061006e006100790061006b00650020> Tj Salinity Gradient 8. /Border [ 0 0 0 ] As of 2020, more than 110 countries have committed to carbon neutrality by 2050. 5), Energy comes in different forms. Gone with the Wind Energy: Design-Build-Test Mini Sail Cars! In our idea, E. gracilis biomass produced using nutrients in wastewater is mixed with sewage sludge, and anaerobically . An unexpected error occurred. Water circulated through these towers turns to steam, driving turbines that can generate up to 377 megawatts of electricity -- enough to power 140,000 homes in California! /Annots [ << >> ] >> endobj 0000002550 00000 n
/Resources << >> /Rect [ 17.01000 21.01000 191.50000 13.01000 ] >> Renewable energy makes economic sense About $5.9 trillion was spent on subsidizing the fossil fuel industry in 2020, including through explicit subsidies, tax breaks, and health and. 486 0 obj /Type /Annot Renewable energy sources have a smaller overall land impact than non-renewable energy. Renewable: The World-Changing Power Of Alternative Energy First Edition. /BBox [ 0 0 535.74805 697.32306 ] They are studying corals because they very efficiently use low levels of phosphate in the water for energy. Magnetic 3. Name the energy from the sun that the panel changes into electricity. >> (Answer: equal world-wide distribution, war, the rich get it, others die, new source of nutrients discovered/engineered, etc.). _w[. 0000005232 00000 n
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BT >> ] Cells use energy to perform the most basic life functions. /URI (www\056cambridge\056org\0579781107028487) /Type /Annot Students learn a little about the history of space travel as well as the different technologies that engineers develop to make spa Students are introduced to the fabulous planet on which they live. /pdfrw_0 129 0 R >> /A << 173 terawatts 1.73 terawatts 17,300 terawatts 173,000 terawatts 2. 13 0 obj Pros: Abundant High energy output Cons: Nonrenewable (it takes millions of years to create) Extraction is destructive to environment >> << Engineers work at developing new technologies that use renewable sources to contribute to greater health, happiness and safety of our Earth's inhabitants. 7. Fuel Cells 9. endobj <> This means that we leave a lot of light bulbs on when unused. /F1 53 0 R >> /Subtype /Link /Border [ 0 0 0 ] stream Take this quiz to see where renewable energy is heading. /Type /Annot Put your knowledge to the test to find out just how powerful it can be. endstream Energy Blog: Airport Cybersecurity Needs Will Grow with Electric-Powered Flight. >> 0000005627 00000 n
Q /S /URI endobj 3. /Annots [ << /Border [ 0 0 0 ] ET >> 2. Renewable energy resources include: Hydroelectric Wind Solar Tidal Wave Geothermal Biomass Hydroelectric Hydroelectric generators use moving water to drive turbines. Talking Devices Could Reduce Odds of Electrical Grid Breakdowns. q /URI (www\056cambridge\056org\0579781107028487) /URI (www\056cambridge\056org) penstock: A pipe or conduit used to carry water to a water wheel or turbine. /Type /Annot Authorized Resellers and Electronic Version Licensees, ISO Committees & Technical Advisory Groups, Other Association Offers for ASME Members, Volunteer Orientation & Leadership Training. /Length 65672 485 0 obj endobj The steam turns a turbine and produces electricity that is sent to our houses via power lines, and used in our electrical items like a refrigerator. The five sources of renewable energy.copyrightCopyright 2020 Sabina Schill. /Subtype /Link Ask the students to describe some sources of renewable energy? Rather than reading a good book with a cup of coffee in the afternoon, instead they are facing with some harmful bugs inside their computer. Name the form of energy that can be stored in a battery. These projects include the installation of three air-to-air heat exchangers, an upgrade of lighting and . (Grade
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/Type /Annot A similar percentage of households (24%) obtain 20-40% of their energy from RES. /Font << McKinsey estimates that by 2026, global renewable-electricity capacity will rise more than 80 percent from 2020 levels (to more than 5,022 gigawatts). 0000011379 00000 n
Of all new generating capacity added to the U.S. electrical grid in 2015, what percentage was solar? Today, soft costs -- that is, all the costs and fees aside from the solar hardware itself -- account for more than half of the price of installing a solar energy system. /Resources << >> Renewable Energy and Green Building Entrepreneurship: Duke University. ch 14and renewable charts quiz, 3 match the type of resource with the best description including the classification as renewable or nonrenewable using the endobj %PDF-1.3 endobj /S /URI Concentrating solar power technologies use mirrors to reflect and concentrate sunlight onto receivers that collect solar energy and convert it to heat. >> ] /Rect [ 17.01000 744.69000 81.07000 736.69000 ] Can the students think of a time where they could save some electricity by turning off a light bulb? /S /URI Dematerialization: Energy conservation, less new energy needed for future economic growth. This research intends to examine the association amidst sustainable development, renewable energy consumption, non-renewable energy utilization, and GDP. : Ask students the following questions and ask them to guess at the different percentages of energy use. (Grades
/Font << >> >> What are the most common photovoltaic cells used today? <>/Filter/FlateDecode/Index[39 445]/Length 38/Size 484/Type/XRef/W[1 1 1]>>stream
The American Society of Mechanical Engineers. /Subtype /Link hbbd``b`$@D$rnID ? Despite these advantages, wave-energy harvesting is still in its infancy. Across the globe, renewable energy capacity is being added at levels not seen before. >> Comes from sources that naturally renew themselves at a rate that allows us to meet our energy needs. >> << 0000003528 00000 n
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>> The Dynamic Universe: An Introduction to Astronomy, Minnesota: West Publishing Company, 1988. << /Subtype /Link You are an energy expert. They make estimations using these units and compare their guesses with actual values. /A << Test your child's knowledge of renewable resources with this review sheet. /S /URI endobj /Type /ExtGState /Annots [ << >> Renewable Energy Technology Futures: Wind, Solar PV, and More Wind turbines and solar photovoltaics (PV) are on a path of rapid growth. endobj >> H Conductor 10. How I Cut My Use of Fossil Fuels: Tips From the Pros. For example, fossil fuels can put human health at risk. "Photovoltaic" has two parts: photo, derived from the Greek word for light, and volt, from electricity pioneer Alessandro Volta. endobj /A << /Annots [ << /S /URI << Training for a Team. within type by subtype, then by grade, etc. Steen, Anthena S., Steen, Bill, Bainbridge, David and Eisenberg. HVj@}1 h;{#/
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jO7wR#3@6Hbe'PFW fTY#TdQky4-PX{@jrm Life as we know it would not be possible without energy production and consumption.). startxref >> /ProcSet [ /Text /PDF /ImageI /ImageC /ImageB ] /Annots [ << /Subtype /Link << endobj The most common biomass materials used for energy are plants, wood, and waste. endobj 0000004624 00000 n
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/Type /Page >> >> Sustainable development is possible by use of sustainable energy and by ensuring access to affordable, reliable, sustainable, and modern energy for citizens. /Rect [ 17.01000 744.69000 81.07000 736.69000 ] 1. 15 0 obj Solar panels capture and harness the sun's ___________. >> /Border [ 0 0 0 ] Methods for analyzing renewable energy options within an integrated framework are discussed in . /I1 51 0 R /MediaBox [ 0 0 535 835.65000 ] /S /URI Energy can move and change, but it cannot be destroyed. Distribution and use of this material are governed by 0000001906 00000 n
/XObject << /URI (www\056cambridge\056org) /pdfrw_0 166 0 R For non-personal use or to order multiple copies, please contact >> Save a Watt: Ask students to engage in two energy saving activities before the next class period. Nested under units are lessons (in purple) and hands-on activities (in blue). 0000001176 00000 n
But whatever form it is in, energy is essentially the capacity for making something happen or, as scientists put it, "doing work.". /Type /Annot 503 0 obj 0000008318 00000 n
/I1 51 0 R endstream Cause and effect relationships are routinely identified and used to explain change. /Type /Annot Science explanations describe the mechanisms for natural events. /I1 51 0 R 440 41
Renewable resources can be defined as the resources which can replace itself naturally in a short period of time, while Non-renewable resources are the one that is not able of replacing itself. endstream technology, engineering or math (STEM) educational standards. Preview Renewable Energy Tutorial (PDF Version) Buy Now. If you are looking to plan a lesson around this topic make sure to use our Renewable and Non-Renewable Energy Lesson Plan! (Answer: Hungry, sad, scared, motivated to find a way to survive, etc. /Subtype /Link Give two energy conversions that occur to produce the flashes of light warning motorists approaching the school on dark /Border [ 0 0 0 ] The correct answer is natural gas. /Type /Annot endobj /S /URI endobj /Border [ 0 0 0 ] 1. 16 0 obj [1 mark] (b) Explain why it better to use a range of renewable energy resources rather than relying solely on wind farms. >> /Font << In total, nearly 1,900 MW of new utility-scale solar capacity was added, bringing the state's utility-scale capacity for all solar technologies to 5,400 MW by the end of 2014. 1. Energy is everywhere! Some countries that have run completely on renewable energy for a period of time include Denmark, who ran entirely on wind for a day; Portugal, who ran on wind, solar and hydropower for four days; and Costa Rica, who was powered by renewable energy for more than 100 days. << /Length 5 0 R /Filter /FlateDecode >> A. Hydopower B. /Parent 1 0 R /S /URI /Subtype /Link /MediaBox [ 0 0 535 835.65000 ] /pdfrw_0 124 0 R /A << /F1 53 0 R Q 0 g With an emphasis on energy generation, this technology focuses on creating biogas energy using biomass which can be generated everywhere by everyone. >> 1 0 0 1 0 32.50000 cm [510 0 R] Thanks in part to research funded by the Energy Department's SunShot Initiative, photovoltaic solar panels have gotten dramatically cheaper over the past decade. /A << 0000004116 00000 n
Hewitt, Paul G. Conceptual Physics, Boston, MA: Addison Wesley Publishing Company, 2004. Improvements, however, still must be made to transition from fossil fuels. /URI (www\056cambridge\056org) >> 0 730.77000 m /URI (www\056cambridge\056org) Quiz: Basic Facts About Renewable And Non-renewable Energy! Top 11 Books About Renewable Energy. SunShot was created with the aim of making solar power cost-competitive with fossil fuels by 2020, and it has made significant strides toward that goal by supporting the development of more efficient solar cells and cost-effective manufacturing processes. /S /URI Texas State Energy Conservation Office, www.infinitepower.org/lessonplans.htm, U.S. Department of Energy, Energy Efficiency and Renewable Energy, www.eere.energy.gov. /XObject << /MediaBox [ 0 0 535 835.65000 ] Spanning 3,500 acres of Southern California desert, Ivanpah's 173,500 "heliostats" (each made up of two mirrors) focus the sun's rays on three 459-foot-tall, heat-collecting "power towers." As energy majors work toward their energy transition and sustainability commitments, expect to see further investments in renewable energy, particularly offshore wind, and more broadly in the energy transition including hydrogen, biofuels, E-mobility, and carbon capture and storage projects. endstream
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Energy can be moved from place to place by moving objects or through sound, light, or electric currents. /S /URI /Subtype /Link Energy can also be transferred from place to place by electric currents, which can then be used locally to produce motion, sound, heat, or light. If something is renewable it must replenish itself, There is no document available yet, please upload the document. << /pdfrw_0 119 0 R 22 0 obj >> /Font << /Rect [ 17.01000 744.69000 81.07000 736.69000 ] Advertisements. Renewables share of new generating capacity jumped again for the second straight year. >> As a result, the statistics of OECD nations covering the duration of 1990-2015 were used. What would they do? /Rect [ 17.01000 21.01000 191.50000 13.01000 ] BT HMO@HY~K$"(z@94=w1`PWYpzu9Z-6+6wYj]:RUy1)5j0E5 a[XIv93i?[+.((WR&cbIITD@qwG
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The International Renewable Energy Agency reported that despite the COVID-19 pandemic, 260 GW of renewables were added in 2020, a number that beat the previous record by almost 50 percent. >> << >> endobj >> >> (Grade
sources of renewable and nonrenewable energy as well as Renewable-identified as sources of energy that are "naturally replenished" and will not run out. G8)M{*?E[jhKt$h`Gw$x'(*WWgc=PFJhsm^ht}5k7seF4ulO@2VN[9-c#>kgu{ZCv1"Oe(F?Q(g"{{a "92IclB?,~AMe[N1GuY4\l:3MMFM 0000038799 00000 n
<> /A << /Border [ 0 0 0 ] They learn how engineers study human interactions with the Earth and design technologies and systems to monitor, use and care for our planet's resources wisely to preserve life on Earth. >> ] F Insulator 2. /XObject 29 0 R /Contents 87 0 R Do biofuels last longer than other gases used to power cars? D Electron 4. "Non-renewable energy sources are energy stores with zero or a minute rate of replenishment relative to its depletion by human beings. endobj /Subtype /Link /ColorSpace /DeviceGray A. Greenhouse gases B. /BM /Normal /ProcSet [ /Text /PDF /ImageI /ImageC /ImageB ] /ProcSet [ /Text /PDF /ImageI /ImageC /ImageB ] Q S 17.01000 772.31000 Td Submit Demo Request. True B. /F1 53 0 R 3 -
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This means that only 15-20% of the energy we use is from renewable energy sources such as sun, wind and water. Distinguished from non - commercial energy comprising fuelwood, agricultural wastes and animal dung collected usually by the user. >> /Rect [ 17.01000 744.69000 81.07000 736.69000 ] endobj /Subtype /Link >> Which of the following is NOT a technology used in concentrating solar power? /ProcSet [ /Text /PDF /ImageI /ImageC /ImageB ] 495 0 obj You may want to give an example here like coal being mined from the earth, sent to power plants where it is burned to produce steam. Corals have fractal surfaces, and scientists believe that fractal surfaces could make many chemical reactions more efficient. >> << These efforts contribute to a better, cleaner planet for all inhabitants. /Font << Choose three statements that show that hydropower is renewable? 0000008798 00000 n
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>> /I1 51 0 R >> 1. You can have the students list the activities or write a paragraph and turn the assignment in. /S /URI Renewable energy is defined by the U.S. Environmental Protection Agency thus: "Renewable energy includes resources that rely on fuel sources that restore themselves over short periods of time and do not diminish" (Source: U.S. EPA ). /Rect [ 17.01000 744.69000 81.07000 736.69000 ] BT 480 0 obj
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/Contents 123 0 R And some types, including solar and wind, account for little or no greenhouse-gas emissions because there is no combustion. /Subtype /Link f Venn Diagram: Ask students to create a Venn Diagram to compare/contrast a form of renewable energy and a form of non-renewable energy. >> /A << Granger causality examination, over the long . 494 0 obj /MediaBox [ 0 0 535 835.65000 ] ET (Answer: We use energy all the time. Other energy sources, for example, include energy created from old car tires: this source fuels five power stations in the U.S. Also, engineers are trying to design new gas power stations (gas drives the electricity generators and then is reused to heat the plant). /Type /Annot >> << /Type /Page /pdfrw_0 139 0 R /Type /Page Renewable Energy: Fundamentals and Job Opportunities: University at Buffalo. Fossil Fuels endobj 0000004897 00000 n
Electrostatic 4. The wind, the sun, and Earth are sources of renewable energy . .css-16c7pto-SnippetSignInLink{-webkit-text-decoration:underline;text-decoration:underline;cursor:pointer;}Sign In. And that's exactly what photovoltaic systems do -- turn light into electricity! 8. 1. <>stream
Questions: 11 | Attempts: 1862 | Last updated: Dec 12, 2022 Sample Question ), What if there was only a tiny bit of food? xWMUUn,PjK 3ge;)o With several large solar plants phased into operation in 2014, California's utility-scale (1 megawatt or larger) facilities generated a record 9.9 million megawatthours (MWh) of electricity in 2014, an increase of 6.1 million MWh from 2013 and more than three times the output of the next-highest state, Arizona. Mechanical, electrical and civil engineers collaborate to develop new and more efficient ways to generate electricity from renewable resources. >> energy issues. $#W#?cO
Energy comes from many sources, directly or indirectly: power plants, people, food, light, windmills, turbines, fires, electrical circuits, the sun, machines, etc. /S /URI Lesson, quiz, self assessment. Crime C. Pollution D. >> This stored power, especially in the form of solar power, never becomes overloaded (which is what happens when the lights in your house or neighborhood go out). /Type /Annot /Contents 170 0 R E Renewable resource 9. 8PC'c#Bz$5m8/` /Subtype /Link Ask each group to present their timeline to the class. %PDF-1.5
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<]/Prev 142889/XRefStm 1526>> /URI (www\056cambridge\056org) endobj 14 0 obj insulation: A material used to prevent the passage of heat, electricity, or sound (i.e., a non-conducting material). /Type /Annot /pdfrw_0 171 0 R Discussion: Ask students the following questions. Keep up the good work. /A << endobj /ProcSet [ /Text /PDF /ImageI /ImageC /ImageB ] /URI (www\056cambridge\056org) 17.01000 782.23000 Td [2 marks] Answer: Test your Knowledge about Green Energy! >> >> /Border [ 0 0 0 ] (Answer: from food) Ask them to describe what might happen if suddenly there was no more food. /Annots [ << /ProcSet [ /Text /PDF /ImageI /ImageC /ImageB ] (Note: this is a stretch for some because generally food is considered a renewable resource and because the food supply often seems unlimited to people in the U.S.). >> /Subtype /Link >> 0 g /I1 51 0 R /XObject << 2. /A << There are two main sources of energy. endstream reflect: This is when something such as sound waves or light waves bend back or return upon striking a surface. Generators are like storage houses for energy and are usually powered by electricity from coal or fossil fuels. 17.01000 738.29000 Td /S /URI 0000005027 00000 n
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