Energy Literacy: Essential Principles and Fundamental Concepts for Energy Education presents energy concepts that, if understood and applied, will help individuals and communities make informed energy decisions.
About This GuideEnergy Literacy: Essential
Principles and Intended use of this document as a guide includes,Fundamental Concepts for Energy Education but is not limited to, formal and informal energypresents energy concepts that, if understood and education, standards development, curriculumapplied, will help individuals and communities design, assessment development,make informed energy decisions. and educator trainings.Energy is an inherently interdisciplinary topic. Development of this guide began at a workshopConcepts fundamental to understanding energy sponsored by the Department of Energy (DOE)arise in nearly all, if not all, academic disciplines. and the American Association for the AdvancementThis guide is intended to be used across of Science (AAAS) in the fall of 2010. Multipledisciplines. Both an integrated and systems-based federal agencies, non-governmental organizations,approach to understanding energy are strongly and numerous individuals contributed to theencouraged. development through an extensive review and comment process. Discussion and informationEnergy Literacy: Essential Principles and gathered at AAAS, WestEd, and DOE-sponsoredFundamental Concepts for Energy Education Energy Literacy workshops in the spring of 2011identifies seven Essential Principles and a set of contributed substantially to the refinement ofFundamental Concepts to support each principle. the guide.This guide does not seek to identify all areas ofenergy understanding, but rather to focus on those To download this guide and related documents,that are essential for all citizens. The Fundamental visit www.globalchange.gov.Concepts have been drawn, in part, from existingeducation standards and benchmarks.The intended audience for this document isanyone involved in energy education. Used informal educational environments, this guide U.S. Department of Energyprovides direction without adding new concepts 1000 Independence Ave SWto the educator’s curriculum. This guide is not Washington, DC 20585a curriculum. The Essential Principles and 202-586-5000Fundamental Concepts offer a framework upon http://www.globalchange.govwhich curricula can be based without prescribingwhen, where, or how content is to be delivered. Version 1.0: March 2012
What is Energy Literacy? Why
Does EnergyEnergy literacy is an understanding of the natureand role of energy in the universe and in our Literacy Matter?lives. Energy literacy is also the ability to apply A better understanding of energy can:this understanding to answer questions and solve • lead to more informed decisionsproblems. • improve the security of a nationAn energy-literate person: • promote economic development • can trace energy flows and think in terms of • lead to sustainable energy use energy systems • reduce environmental risks and negative • knows how much energy he or she uses, impacts for what, and where the energy comes from • help individuals and organizations save • can assess the credibility of information money about energy Without a basic understanding of energy, energy • can communicate about energy and sources, generation, use, and conservation energy use in meaningful ways strategies, individuals and communities cannot • is able to make informed energy Energy Literacy is a make informed decisions on topics ranging from smart energy use at home and consumer choices and energy use decisions based on an understanding of impacts and Part of Social and Natural to national and international energy policy. Current national and global issues such as the consequences Science Literacy fossil fuel supply and climate change highlight the need for energy education. • continues to learn about energy throughout A comprehensive study of energy must be his or her life interdisciplinary. Energy issues cannot be understood and problems cannot be solved by using only a natural science or engineering approach. Energy issues often require an understanding of civics, history, economics, sociology, psychology, and politics in addition to science, math, and technology. Just as both social and natural science are a part of energy literacy, energy literacy is an essential part of being literate in the social and natural sciences. References to energy can be found in National Education Standards in nearly all academic disciplines.
How Do We Know What
We Know About Energy?Social and natural scientists have systematically ideas, rather than their outright rejection, is the Part of scientific inquiry is to evaluate thedeveloped a body of knowledge about energy norm in science, as powerful constructs tend to results of scientific investigations, experiments,through a process much the same as that used by survive, grow more precise, and become widely observations, theoretical models, and thescientific disciplines in general. accepted. explanations proposed by other scientists. Evaluation includes reviewing the experimentalSocial and natural scientists formulate and In areas where active research is being procedures, examining the evidence, identifyingtest explanations of nature using observation, pursued and in which there is not a great deal faulty reasoning, pointing out statements that goexperiment, and theoretical and mathematical of experimental or observational evidence and beyond the evidence, and suggesting alternativemodels. Although all scientific ideas are tentative understanding, it is normal for scientists to differ explanations for the same observations. Althoughand subject to change and improvement, for most with one another about the interpretation of scientists may disagree about explanations ofmajor ideas, there is substantial experimental and evidence being considered. Different scientists phenomena, interpretations of data, or the valueobservational confirmation. These major ideas are might publish conflicting experimental results or of rival theories, they do agree that questioning,not likely to change greatly in the future. Scientists might draw different conclusions from the same response to criticism, and open communicationdo adjust and refine their ideas about nature data. Ideally, scientists acknowledge such conflict are integral to the process of science. Aswhen they encounter new experimental evidence and work toward finding evidence that will resolve knowledge evolves, major disagreements arethat does not match existing models, rejecting the their disagreement. In this way, communities of eventually resolved through such interactions.notion of attaining absolute truth and accepting social and natural scientists form self-correctinguncertainty as part of nature. The modification of networks, working toward an ever-better understanding of the social and natural universe.
A Brief History of Human
Energy Use supply until the middle of the 20th century when it was overtaken by oil. Producers in a food chain−like plants, algae and cyanobacteria− The next major energy revolution capture energy from the Sun. Nearly all organisms rely on this was the ability to generate electricity energy for survival. Energy flow through most food chains begins and transmit it over large distances. with this captured solar energy. Some of this energy is used During the first half of the 19th by organisms at each level of the food chain, much is lost as century, British physicist Michael heat, and a small portion is passed down the food chain as one Faraday demonstrated that electricity organism eats another. would flow in a wire exposed to a changing magnetic field, now knownOver time, humans have developed an understanding of energy that has as Faraday’s Law. Humans thenallowed them to harness it for uses well beyond basic survival. understood how to generate electricity.The first major advance in human understanding of energy was the mastery In the 1880s, Nikola Tesla, a Serbian-of fire. The use of fire to cook food and heat dwellings, using wood as the born electrical engineer, designedfuel, dates back at least 400,000 years.1 The burning of wood and other alternating current (AC) motorsforms of biomass eventually led to ovens for making pottery, and the refining and transformers that made long-of metals from ore. The first evidence of coal being burned as a fuel dates distance transmission of electricityback approximately 2,400 years.2 possible. Humans could now generate electricity on a large scale, at aAfter the advent of fire, human use of energy per capita remained nearly single location, and then transmit that During the 20th century, hydroelectric dams suchconstant until the Industrial Revolution of the 19th century. This is despite the as this one were built on major waterways across electricity efficiently to many differentfact that, shortly after mastering fire, humans learned to use energy from the the United States. For a time, in the middle of the locations. Electricity generated at 20th century, hydropower was the major source ofSun, wind, water, and animals for endeavors such as transportation, heating, Niagara Falls, for example, could be electricity in the United States.cooling, and agriculture. used by customers all over the region.The invention of the steam engine was at the center of the Industrial Although hydropower, largely in the form of water wheels, has been in use byRevolution. The steam engine converted the chemical energy stored in human society for centuries, hydroelectricity is a more recent phenomenon.wood or coal into motion energy. The steam engine was widely used to solve The first hydroelectric power plants were built at the end of the 19th centurythe urgent problem of pumping water out of coal mines. As improved by and by the middle of the 20th century were a major source of electricity. As ofJames Watt, Scottish inventor and mechanical engineer, it was soon used to 2010, hydropower produced more than 15% of the world’s electricity.4move coal, drive the manufacturing of machinery, and power locomotives,ships and even the first Humans have also been using energy from wind to power human endeavorsautomobiles.3 It was during for centuries, but have only recently begun harnessing wind energy tothis time that coal replaced generate electricity. Wind energy propelled boats along the Nile River aswood as the major fuel supply early as 5000 B.C. By 200 B.C., simple windmills in China were pumpingfor industrialized society. __________________Coal remained the major fuel 1 Bowman DM, Balch JK, Artaxo P et al. Fire in the Earth System. Science. 2009, 324 (5926), pp 481–4.Humans have been using energy 2 Metalworking and Tools, in: Oleson, John Peter (ed.): The Oxford Handbook of Engineeringfrom wind to power human and Technology in the Classical World, Oxford University Press, 2009, pp. 418–38 (432).endeavors for centuries. These 3 Benchmarks for Science Literacy, American Association for the Advancement of Science,windmills in the Netherlands 1993, benchmark 10J/M2.were built almost three hundred 4 Source of data is the U.S. Energy Information Administration (http://www.eia.gov ) unlessyears ago. otherwise noted.
water, while vertical-axis windmills with
woven reed sails were grinding grain decay of unstable elements beneath Earth’s surface and gravitational energyin Persia and the Middle East. Windmills designed to generate electricity, associated with Earth’s mass. The radioactive decay and gravitational energyor wind turbines, appeared in Denmark as early as 1890. Currently, wind produce thermal energy that makes its way to the surface of Earth, often inprovides almost 2% of the world’s electricity.5 the form of hot water or steam.In the 20th century, Einstein’s Theories of Relativity and the new science of Modern biofuels are another way humans have found to harness energy forquantum mechanics brought with them an understanding of the nature of use beyond basic survival. Biofuels are plant materials and animal wastematter and energy that gave rise to countless new technologies. Among used as fuel. For example, ethanol is a plant-based fuel used more and morethese technologies were the nuclear power plant and the solar or photovoltaic commonly in vehicles, usually in conjunction with petroleum-based fuels.cell. Both of these technologies emerged as practical sources of electricity Although humans have found many different sources of energy to power theirin the 1950s. Nuclear energy quickly caught on as a means of generating endeavors, fossil fuels remain the major source by a wide margin. The threeelectricity. Today, nuclear energy generates almost 15% of the world’s fossil fuel sources are coal, oil, and natural gas. Oil has been the major fuelelectricity. Solar energy provides less than 1% of the world’s electricity. Solar supply for industrialized society since the middle of the 20th century andis the only primary energy source that can generate electricity without relying provides more of the energy used by humans than any other source. Coal ison Faraday’s Law. Particles of light can provide the energy for the flow of second on this list, followed closely by natural gas. Together they accountedelectrons directly. for more than 80% of the world’s energy use in 2010.Humans have also managed to harness the geothermal energy of Earth to Industrialization and the rise in access to energy resources have taken placeproduce electricity. The first geothermal power plant was built in 1911 in at very disparate rates in different countries around the world. For example,Larderello, Italy. Geothermal energy is a result of the continuous radioactive as of 2011, there were 1.3 billion people on Earth with no access to electricity.6 As with any human endeavor, the use of energy resources and the production of electricity have had and will continue to have impacts and consequences, both good and bad. Awareness of the energy used to grow, process, package, and transport food, or the energy used to treat water supplies and wastewater, is important if society is to minimize waste and maximize efficiency. These are just a few examples of the many energy issues people can become informed about. Human society has and will continue to develop rules and regulations to help minimize negative consequences. As new information comes to light and new technologies are developed, energy policies are reevaluated, requiring individuals and communities to make decisions. This guide outlines the understandings necessary for these decisions to be informed. __________________ 5 World Wind Energy Report, World Wind Energy Association, February 2009. 6 International Energy Agency, World Energy Outlook, 2011.
Energy LiteracyThe Essential Principlesand Fundamental
Concepts 1 Energy is a physical quantity that follows precise natural laws. 2A note on the use of the Essential Principles andFundamental concepts:The Essential Principles, 1 through 7, are meant Physical processes on Earth are the result of energy flowto be broad categories representing big ideas. through the Earth system. 3Each Essential Principle is supported by six toeight Fundamental Concepts: 1.1, 1.2, and soon. The Fundamental Concepts are intendedto be unpacked and applied as appropriate for Biological processes depend on energy flow through thethe learning audience and setting. For example, Earth system. 4teaching about the various sources of energy(Fundamental Concept 4.1) in a 3rd gradeclassroom, in a 12th grade classroom, to visitors Various sources of energy can be used to power humanof a museum, or as part of a community education activities, and often this energy must be transferred fromprogram will look very different in each case. source to destination. 5Further, the concepts are not intended to beaddressed in isolation; a given lesson on energywill most often connect to many of the concepts. Energy decisions are influenced by economic, political, environmental, and social factors. 6 The amount of energy used by human society depends on many factors. 7 The quality of life of individuals and societies is affected by energy choices.
1 Energy is a physical
quantity that follows precise natural laws.1.1 Energy is a quantity that is transferred energy has been “used up,” even though it is still energy. For example, joules, calories, ergs,from system to system. Energy is the ability around somewhere. A more efficient system will kilowatt-hours, and BTUs are all units of energy.of a system to do work. A system has done work lose less energy, up to a theoretical limit. Given a quantity of energy in one set of units, oneif it has exerted a force on another system over can always convert it to another (e.g., 1 calorie =some distance. When this happens, energy is 1.5 Energy comes in different forms 4.186 joules).transferred from one system to another. At least and can be divided into categories.some of the energy is also transformed from one Forms of energy include light energy, elastic 1.8 Power is a measure of energytype into another during this process. One can energy, chemical energy, and more. There are transfer rate. It is useful to talk about the ratekeep track of how much energy transfers into or two categories that all energy falls into: kinetic at which energy is transferred from one system toout of a system. and potential. Kinetic describes types of energy another (energy per time). This rate is called power. associated with motion. Potential describes energy One joule of energy transferred in one second is1.2 The energy of a system or object possessed by an object or system due to its called a Watt (i.e., 1 joule/second = 1 Watt).that results in its temperature is called position relative to another object or system andthermal energy. When there is a net transfer forces between the two. Some formsof energy from one system to another, due to a of energy are part kinetic and partdifference in temperature, the energy transferred potential energy.is called heat. Heat transfer happens in threeways: convection, conduction, and radiation. Like 1.6 Chemical and nuclearall energy transfer, heat transfer involves forces reactions involve transferexerted over a distance at some level as systems and transformation of energy.interact. The energy associated with nuclear reactions is much larger than that All transfer of energy involves loss1.3 Energy is neither created nor associated with chemical reactions to the surroundings. This diagramdestroyed. The change in the total amount for a given amount of mass. Nuclear illustrates losses typical of an electricof energy in a system is always equal to the reactions take place at the centers of grid powering an incandescentdifference between the amount of energy stars, in nuclear bombs, and in both light bulb.transferred in and the amount transferred out. The fission- and fusion-based nucleartotal amount of energy in the universe is finite and reactors. Chemical reactions are (Reprinted with permission from:constant. pervasive in living and non-living What You Need Earth systems. To Know About1.4 Energy available to do useful work Energy, 2008, National Academydecreases as it is transferred from 1.7 Many different units are of Sciences andsystem to system. During all transfers of used to quantify energy. As National Academiesenergy between two systems, some energy is lost with other physical quantities, many Press.)to the surroundings. In a practical sense, this lost different units are associated with
2 Physical processes on Earth
are the result of energy flow through the Earth system.2.1 Earth is constantly changing as 2.3 Earth’s weather and climate areenergy flows through the system. mostly driven by energy from the Sun. ForGeologic, fossil, and ice records provide example, unequal warming of Earth’s surface andevidence of significant changes throughout atmosphere by the Sun drives convection withinEarth’s history. These changes are always the atmosphere, producing winds, and influencingassociated with changes in the flow of energy ocean currents.through the Earth system. Both living and non-living processes have contributed to this change. 2.4 Water plays a major role in the storage and transfer of energy in the2.2 Sunlight, gravitational potential, Earth system. The major role water plays is adecay of radioactive isotopes, and result of water’s prevalence, high heat capacity,rotation of the Earth are the major and the fact that phase changes of water occursources of energy driving physical regularly on Earth. The Sun provides the energyprocesses on Earth. Sunlight is a source that drives the water cycle on Earth. Storms like this hurricane are powered by the latent heatexternal to Earth, while radioactive isotopes and energy of water as it changes phase from liquid to gas,gravitational potential, with the exception of tidal 2.5 Movement of matter between and then back to liquid. (Source: National Oceanic andenergy, are internal. Radioactive isotopes and reservoirs is driven by Earth’s internal Atmospheric Administration, Environmental Visualization and external sources of energy. These Laboratory)gravity work together to produce geothermalenergy beneath Earth’s surface. Earth’s rotation movements are often accompanied by a changeinfluences global flow of air and water. in the physical and chemical properties of the incoming sunlight but not to the infrared light from matter. Carbon, for example, occurs in carbonate the warmed surface of Earth. These gases play a rocks such as limestone, in the atmosphere major role in determining average global surface as carbon dioxide gas, in water as dissolved temperatures. When Earth emits the same amount carbon dioxide, and in all organisms as complex of energy as it absorbs, its average temperature molecules that control the chemistry of life. Energy remains stable. drives the flow of carbon between these different reservoirs. 2.7 The effects of changes in Earth’s energy system are often not immediately 2.6 Greenhouse gases affect energy apparent. Responses to changes in Earth’s flow through the Earth system. Greenhouse energy system, input versus output, are often only gases in the atmosphere, such as carbon dioxide noticeable over the course of months, years, or and water vapor, are transparent to much of the even decades. This geothermal power plant in Iceland makes use of high temperatures beneath Earth’s surface to generate electricity. Nearby, people enjoy hot water heated by the same sub-surface energy sources.
3 Biological processes depend on
energy flow through the Earth system.3.1 The Sun is the major source of energy 3.3 Energy available to do useful work 3.5 Ecosystems are affected by changesfor organisms and the ecosystems of decreases as it is transferred from in the availability of energy and matter.which they are a part. Producers such as organism to organism. The chemical The amount and kind of energy and matterplants, algae, and cyanobacteria use the energy elements that make up the molecules of living available constrains the distribution andfrom sunlight to make organic matter from carbon things are passed through food chains and are abundance of organisms in an ecosystem and thedioxide and water. This establishes the beginning combined and recombined in different ways. At ability of the ecosystem to recycle materials.of energy flow through almost all food webs. each level in a food chain, some energy is stored in newly made chemical structures, but most is 3.6 Humans are part of Earth’s3.2 Food is a biofuel used by organisms dissipated into the environment. Continual input of ecosystems and influence energyto acquire energy for internal living energy, mostly from sunlight, keeps the process flow through these systems. Humansprocesses. Food is composed of molecules going. are modifying the energy balance of Earth’sthat serve as fuel and building material for all ecosystems at an increasing rate. The changesorganisms as energy stored in the molecules 3.4 Energy flows through food webs in one happen, for example, as a result of changes inis released and used. The breakdown of food direction, from producers to consumers agricultural and food processing technology,molecules enables cells to store energy in new and decomposers. An organism that eats lower consumer habits, and human population size.molecules that are used to carry out the many on a food chain is more energy efficient than onefunctions of the cell and thus the organism. eating higher on a food chain. Eating producers is the lowest, and thus most energy efficient, level at which an animal can eat. Imagine 25,000,000 joules (J) of Tertiary Consumers 1,000 J energy falling on a population of plants. The plants will make use of about 1,000,000 J of this energy. Secondary Consumers 10,000 J As the plants are eaten by primary consumers, only about 10% of that energy will be passed on. This Primary Consumers 100,000 J process of loss continues as primary consumers are eaten by secondary, and secondary by tertiary. Only about 10% of the energy available at one level will be passed on to the next. Producers 1,000,000 J
4 Various sources of energy
can be used to power human activities, and often this energy must be transferred from source to destination.4.1 Humans transfer and to distribute energy to distant locations.transform energy from theenvironment into forms useful U.S. Primary Energy Consumption Electricity is not a primary source of energy, but an energy carrier.for human endeavors. The primary by Energy Source, 2010sources of energy in the environment 4.5 Humans generate electricityinclude fuels like coal, oil, natural gas, TOTAL: 98 QUADRILLION BTU TOTAL: 8 QUADRILLION BTU in multiple ways. When a magneturanium, and biomass. All primary moves or magnetic field changes relative Solar 1%source fuels except biomass are non- Geothermal 3% to a coil of wire, electrons are induced torenewable. Primary sources also include Wind 11% flow in the wire. Most human generation of Biomass waste 6%renewable sources such as sunlight, Coal 21% electricity happens in this way. Electronswind, moving water, and geothermal Biofuels 23% can also be induced to flow through direct Biomassenergy. Petroleum 37% 53% interaction with light particles; this is the Renewable Energy 8% basis upon which a solar cell operates. Wood 25%4.2 Human use of energy is Nuclear Other means of generating electricitysubject to limits and constraints. Electric Power Coal 21% include electrochemical, piezoelectric,Industry, transportation, urban Natural Gas 9% and thermoelectric. 25% Hydropower 31%development, agriculture, and mostother human activities are closely 4.6 Humans intentionally storetied to the amount and kind of energy energy for later use in a numberavailable. The availability of energy NOTE: Sum of biomass components does not equal 53% due to independent rounding. of different ways. Examples includeresources is constrained by the Source: U.S. Energy Information Administration, Annual Energy Review 2010. batteries, water reservoirs, compresseddistribution of natural resources, air, hydrogen, and thermal storage.availability of affordable technologies, Storage of energy involves many technological, stored in these fuels is released during chemicalsocioeconomic policies, and socioeconomic environmental, and social challenges. reactions, such as combustion and respiration,status. which also release carbon dioxide into the 4.7 Different sources of energy and atmosphere. the different ways energy can be4.3 Fossil and biofuels are organicmatter that contain energy captured transformed, transported, and stored 4.4 Humans transport energy fromfrom sunlight. The energy in fossil fuels each have different benefits and place to place. Fuels are often not used atsuch as oil, natural gas, and coal comes from drawbacks. A given energy system, from source their source but are transported, sometimes overenergy that producers such as plants, algae, to sink, will have an inherent level of energy long distances. Fuels are transported primarilyand cyanobacteria captured from sunlight long efficiency, monetary cost, and environmental by pipelines, trucks, ships, and trains. Electricalago. The energy in biofuels such as food, wood, risk. Each system will also have national security, energy can be generated from a variety of energyand ethanol comes from energy that producers access, and equity implications. resources and can be transformed into almostcaptured from sunlight very recently. Energy any other form of energy. Electric circuits are used
5 Energy decisions are influenced
by economic, political, environmental, and social factors.5.1 Decisions concerning the use of fluctuations. Cost differences also arise as a result 5.6 Energy decisions are influencedenergy resources are made at many of differences between energy sources and as a by environmental factors. Environmentallevels. Humans make individual, community, result of tax-based incentives and rebates. costs of energy decisions affect energy decisionnational, and international energy decisions. making at all levels. All energy decisionsEach of these levels of decision making has some 5.5 Energy decisions are influenced by have environmental consequences. Thesecommon and some unique aspects. Decisions political factors. Political factors play a role in consequences can be positive or negative.made beyond the individual level often involve a energy decision making at all levels. These factorsformally established process of decision-making. include, but are not limited to, governmental 5.7 Energy decisions are influenced by structure and power balances, actions taken by social factors. Questions of ethics, morality,5.2 Energy infrastructure has inertia. The politicians, and partisan-based or self-serving and social norms affect energy decision makingdecisions that governments, corporations, and actions taken by individuals and groups. at all levels. Social factors often involve economic,individuals made in the past have created today’s political, and environmental factors.energy infrastructure. The large amount of money,time, and technology invested in these systemsmakes changing the infrastructure difficult, but notimpossible. The decisions of one generation bothprovide and limit the range of possibilities open tothe future generations. Global Energy Subsidies, 20105.3 Energy decisions can be made usinga systems-based approach. As individuals Renewable Energy Subsidies – $66 billionand societies make energy decisions, they canconsider the costs and benefits of each decision.Some costs and benefits are more obvious than Fossil Fuel Subsidies – $409 billionothers. Identifying all costs and benefits requires acareful and informed systems-based approach todecision making. Source – International Energy Agency (IEA), World Energy Outlook, 20115.4 Energy decisions are influenced byeconomic factors. Monetary costs of energyaffect energy decision making at all levels. Energy Decisions regarding energy subsidies have aexhibits characteristics of both a commodity and signifcant effect on energy infrastructure, energy use,a differentiable product. Energy costs are often and on related impacts and consequences.subject to market fluctuations, and energy choicesmade by individuals and societies affect these
6 The amount of energy
used by human society depends on many factors. 6.1 Conservation of energy has two very different meanings. There is the physical law efficiently, making strategic choices as to sources of energy, and reducing energy use altogether. conserve energy. These actions might come in the form of changes in behavior or in changes to the of conservation of energy. This law says that the design of technology and infrastructure. Some of total amount of energy in the universe is constant. 6.3 Human demand for energy is these actions have more impact than others. Conserving energy is also commonly used to increasing. Population growth, industrialization, mean the decreased use of societal energy and socioeconomic development result in 6.7 Products and services carry with resources. When speaking of people conserving increased demand for energy. Societies have them embedded energy. The energy needed energy, this second meaning is always intended. choices with regard to how they respond for the entire lifecycle of a product or service is to this increase. Each of these choices has called the “embedded” or “embodied” energy. An 6.2 One way to manage energy consequences. accounting of the embedded energy in a product resources is through conservation. or service, along with knowledge of the source(s) Conservation includes reducing wasteful energy 6.4 Earth has limited energy resources. of the energy, is essential when calculating the use, using energy for a given purpose more Increasing human energy consumption places amount of energy used and in assessing impacts stress on the natural processes that and consequences. renew some energy resources and itWhere Does My Money Go? depletes those that cannot be renewed. 6.8 Amount of energy used can beAnnual Energy Bill for a typical U.S. Single Family Home is approximately $2,200. calculated and monitored. An individual, 6.5 Social and technological organization, or government can monitor, innovation affects the amount of measure, and control energy use in many ways.Electronics Other Other energy used by human society. Understanding utility costs, knowing whereIncludes 11% Includes The amount of energy society uses per consumer goods and food come from, andcomputer, 4% external power capita or in total can be decreased. understanding energy efficiency as it relates tomonitor, TV Heating adapters, Decreases can happen as a result of home, work, and transportation are essential to& DVD 29% telephony, tech nological or social innovation andplayer. set-top this process. Lighting change. Decreased use of energy does boxes, ceiling 12% fans, vent fans, not necessarily equate to decreased home audio, quality of life. In many cases it will be stoves, ovens, Appliances microwaves, associated with increased quality of lifeAppliances Cooling in the form of increased economic and 13% coffee makers,Includes 17% The Energy Star program dehumidifiers. national security, reduced environmentalrefrigerator, Water is run jointly by the U.S.dishwasher, Heating risks, and monetary savings. Department of Energyclothes washer 14% and the Environmentaland dryer. 6.6 Behavior and design affect Protection Agency. the amount of energy used by The Energy Star logo Source: Typical House memo, Lawrence Berkeley National Laboratory, 2009 and Typical house_2009_Reference.xls spreadsheet. human society. There are actions designates products as Average price of electricity is 11.3 cents per kilo-watt hour. Average price of natural gas is $13.29 per million Btu. individuals and society can take to highly energy efficient.
7 The quality of life
of individuals and societies is affected by energy choices.7.1 Economic security is impacted by 7.3 Environmental quality is impacted 7.5 Access to energy resources affectsenergy choices. Individuals and society by energy choices. Energy choices made quality of life. Access to energy resources,continually make energy choices that have by humans have environmental consequences. or lack thereof, affects human health, access toeconomic consequences. These consequences The quality of life of humans and other organisms education, socioeconomic status, gender equality,come in the form of monetary cost in general on Earth can be significantly affected by these global partnerships, and the environment.and in the form of price fluctuation and instability consequences.specifically. 7.6 Some populations are more 7.4 Increasing demand for and limited vulnerable to impacts of energy choices7.2 National security is impacted by supplies of fossil fuels affects quality of than others. Energy decisions have economic,energy choices. The security of a nation is life. Fossil fuels provide the vast majority of the social, and environmental consequences. Poor,dependent, in part, on the sources of that nation’s world’s energy. Fossil fuel supplies are limited. If marginalized, or underdeveloped populations canenergy supplies. For example, a nation that has society has not transitioned to sources of energy most benefit from positive consequences and arediverse sources of energy that come mostly from that are renewable before depleting Earth’s fossil the most susceptible to negative consequences.within its borders is more secure than a nation fuel supplies, it will find itself in a situation wherelargely dependent on foreign energy supplies. energy demand far exceeds energy supply. This situation will have many social and economic consequences.At left - Students from a schoolin Madavunu, Ghana ride amerry-go-round that generateselectricity for the school.The school and village areotherwise without electricity.At right - Students doschool work by the light of arechargeable LED lamp. Thebattery-powered lamps arerecharged by the merry-go-round and can be used inclassrooms and at home.(Photos courtesy of EmpowerPlaygrounds. Chris Owen,photographer.)
Guiding Principle for Teaching and
Learning:Much is understood about how people learn. Effective learning opportunities are designed with these understandings in mind.*Fundamental Concepts1. People are born investigators and learners. People come to new learning experiences with preconceived ideas and prior knowledge. They have developed their own ideas about how the physical, biological, and social worlds work. Effective learning opportunities acknowledge and access these preconceived ideas and prior knowledge, building on correct understandings and addressing those that are incorrect.2. Effective learning focuses on a core set of ideas and practices. Focus on a core set of ideas and practices—rather than a broad array of what can become disconnected knowledge and isolated facts—allows a learner to make sense of new information and to tackle new problems effectively. This process is aided by explicit instructional support that stresses connections across different topics, disciplines, and learning experiences.3. Understanding develops over time. To develop a thorough understanding of the world and how it works—and to appreciate interconnections—learners need sustained opportunities, over a period of years, to work with and develop underlying ideas. People can continue learning about core ideas their entire lives. Because learning progressions extend over many years, educators must consider how topics are presented at different levels as they build on prior understanding in support of increasingly sophisticated learning.4. Literacy requires both knowledge and practice. The social and natural sciences are not just bodies of knowledge; they are also a set of practices used to establish, extend, and refine that knowledge. Effective teaching infuses these same practices into the learning experience, engaging learners in inquiry-based, authentic experiences that rely on credible This young girl is assembling a fuel cell car that is used as part of a information, data, and evidence as the foundation for taking a position, forming conclusions, lesson on hydrogen and fuel cells. or making claims.5. Connection to interests and experiences enhances learning. Personal interest and experience is a critical part of an effective learning process. Learners must be helped to see how topics connect to their personal experience and are relevant to them. This not only aids learning in general, but helps to foster lifelong learning.6. Educational opportunities must be equitable and accessible to all. Effective learning requires the right tools and opportunities, and these tools and opportunities must be suited to each individual’s needs.__________________* The Fundamental Concepts outlined here are based on a set of six guiding principles laid out in, “A Framework for K-12 Science Education: Practices, Crosscutting Concepts, and Core Ideas,” National Research Council, Board on Science Education, 2011. Please see the NRC Framework for more discussion of these concepts and for further references.
Key DefinitionsDefinitions given here are
for the purposes of this document and are not necessarily complete or exhaustive. Words or phrases included here are those for whichthere may be some confusion as to the meaning intended.Biofuel – A fuel produced from biomass or fuel and electricity. Compare Primary Energy Renewable Energy – Energy obtained frombiomass used directly as a fuel. Compare Source. sources that are virtually inexhaustible (defined inBiomass. terms of comparison to the lifetime of the Sun) and Fossil Fuel – Fuel formed from biomass by a replenish naturally over small time scales relativeBiomass – Organic nonfossil material of process taking millions of years or longer. to the human life span.biological origin. Compare Biofuel. Fuel – A material substance that possesses Reservoir – A place where a supply or store ofChemical Reaction – A process that involves internal energy that can be transferred to the something is kept or located.changes in the structure and energy content of surroundings for specific uses. Included areatoms, molecules, or ions but not their nuclei. petroleum, coal, and natural gas (the fossil fuels), System – A set of connected things or partsCompare Nuclear Reaction. and other materials, such as uranium, hydrogen, forming a complex whole. In particular, a set of and biofuels. things working together as parts of a mechanismCommodity – A good for which there is or an interconnecting network. The place onedemand, but which is supplied without qualitative Geothermal Energy – See Fundamental system ends and another begins is not andifferentiation across a market. The market treats it Concept 2.2. absolute, but instead must be defined based onas equivalent or nearly so no matter who produces Heat – See Fundamental Concept 1.2. purpose and situation.it. Compare Differentiable Product. Kinetic Energy – See Fundamental Concept 1.5. Systems-Based Approach – An approachConservation of Energy – See Fundamental that emphasizes the interdependence andConcept 6.1. Nuclear Reaction – A reaction, as in fission, interactive nature of elements within and external fusion, or radioactive decay, that alters the energy, to events, processes, and phenomena. AnDegrade (as in energy) – The transformation of composition, or structure of an atomic nucleus. approach that seeks to identify and understand allenergy into a form in which it is less available for Compare Chemical Reaction. cause-and-effect connections related to a givendoing work. Political – Of, relating to, or dealing with the event, process, or phenomenon.Differentiable Product – A product whose structure or affairs of government, politics, or the Sustainable – Able to be maintained at aprice is not universal. A product whose price is state. Or, relating to, involving characteristic of steady level without exhausting natural resourcesbased on factors such as brand and perceived politics or politicians. Or, based on or motivated or causing severe ecological damage, as in aquality. Compare Commodity. by partisan or self-serving objectives. behavior or practice.Efficient – The use of a relatively small amount Potential Energy – See Fundamental Concept Thermal Energy – See Fundamental Conceptof energy for a given task, purpose, or service; 1.5. 1.2.achieving a specific output with less energy input. Power – See Fundamental Concept 1.8. Work – See Fundamental Concept 1.1.Embedded or Embodied Energy – SeeFundamental Concept 6.7. Primary Energy Source or Primary Source – A source of energy found in nature that hasEnergy – See Fundamental Concept 1.1. not been subject to any human-induced energyEnergy Carrier – A source of energy that has transfers or transformations. Examples includebeen subject to human-induced energy transfers fossil fuels, solar, wind and hydropower. Compareor transformations. Examples include hydrogen Energy Carrier.
Origins of This GuideDevelopment of
this guide began at a workshop sponsored by theDepartment of Energy (DOE) and the American Association for theAdvancement of Science (AAAS) in the fall of 2010. Multiple federalagencies, non-governmental organizations, and numerous individualscontributed to the development through an extensive review andcomment process. Discussion and information gathered at AAAS,WestEd, and DOE-sponsored Energy Literacy workshops in the spring of2011 contributed substantially to the refinement of the guide.Intended use of this document as a guide includes, but is not limited to,formal and informal energy education, standards development, curriculumdesign, assessment development, and educator trainings.Energy Literacy: Essential Principles and Fundamental Conceptsfor Energy Education identifies seven Essential Principles and a set ofFundamental Concepts to support each principle. This guide does notseek to identify all areas of energy understanding, but rather to focus onthose that are essential for all citizens.
U.S. Global Change Research Program
Partner Agencies: • Department of Agriculture • Department of Commerce • Department of Defense • Department of Energy • Department of Health and Human Services • Department of the Interior • Department of State • Department of Transportation • Environmental Protection Agency • National Aeronautics and Space Administration • National Science Foundation • The Smithsonian Institution • US Agency for International DevelopmentEducation Partners: • Alliance to Save Energy • Cooperative Institute for Research in the • Otherlab • American Association for the Advancement Environmental Sciences, • Science Museum of Minnesota of Science, Project 2061 University of Colorado, Boulder • TERC • American Association of Blacks in Energy • Energy Bridge • WestEd • American Nuclear Society • KQED San Francisco, QUEST • Wisconsin K-12 Energy Education Program • Association of Public and Land-Grant • National Center for Science Education • Women Impacting Public Policy Universities • National Council for Science and the • Center of Science and Mathematics in Environment U.S. Department of Energy Context, University of Massachusetts, • National Energy Education Development 1000 Independence Ave SW Project Washington, DC 20585 Boston 202-586-5000 • Chabot Space & Science Center • National Energy Foundation http://www.globalchange.gov • Climate Literacy and Energy Awareness • National Science Teachers Association Network • North American Association for Environmental Education Version 1.0: March 2012