What is energy?

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Wirtualne Środowisko Nauki SJO
Projekt Studium Języków Obcych Politechniki Wrocławskiej

Teksty do nauki języka naukowo-technicznego

Właściwości dokumentu: Autor: mgr Teresa Staszewska, mgr Elżbieta Szczawińska angielski B2+ W5

Język: Poziom: Tekst dla wydziału: Typ Tekst z zadaniami nr 2

© Politechnika Wrocławska - Studium Języków Obcych

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WHAT IS ENERGY

Energy is Ability to do work. The energy can take a wide variety of forms - heat (thermal), light (radiant), mechanical, electrical, chemical, and nuclear energy. There are two types of energy - stored (potential) energy and working (kinetic) energy. For example, the food you eat contains chemical energy, and your body stores this energy until you release it when you work or play. All forms of energy are stored in different ways, in the energy sources that we use every day. These sources are divided into two groups -- renewable (an energy source that we can use over and over again) and nonrenewable/conventional (an energy source that we are using up and cannot recreate in a short period of time). Renewable energy sources include solar energy (which comes from the sun and can be turned into electricity and heat), wind energy, geothermal energy (from inside the earth), biomass from plants, and hydropower from water are also renewable energy sources. However, we get most of our energy from nonrenewable energy sources, which include the fossil fuels -- oil, natural gas, and coal. They're called fossil fuels because they were formed over millions and millions of years by the action of heat from the Earth's core and pressure from rock and soil on the remains (or "fossils") of dead plants and animals. Another nonrenewable energy source is the element uranium, whose atoms we split (through a process called nuclear fission) to create heat and ultimately electricity. We use all these energy sources to generate the electricity we need for our homes, businesses, schools, and factories. Electricity "energizes" our computers, lights, refrigerators, washing machines, and air conditioners, to name only a few uses. We use energy to run our cars. The gasoline we burn in our cars is made from oil. We use energy to cook on an outdoor grill or soar in a beautiful hot-air balloon. The propane for these recreational activities is made from oil and natural gas. Energy is in everything. We use energy to do everything we do, from making a jump shot to baking our favorite cookies to sending astronauts into space -- energy is there, making sure we have the power to do it all.

Based on http://www.kids.esdb.bg/whatisenergy.html

© Politechnika Wrocławska - Studium Języków Obcych

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ZADANIA DO TEKSTU ZADANIE 1 Put the words in order to make grammatically correct questions and statements and then discus the problems. 1. energy ,What, take, forms,?, can, is, it and, what 2. types ,What, energy are,. ,two, of, Give. examples 3. the ,What, sources , energy, two,?, are, of 4. the ,Tell, two,. , difference, the, between, sources 5. examples ,Give, of, sources, used, over, be, over again. , energy, that, can, and 6. get ,sources ,What ,we, most, our , from, include? do, energy, of, energy 7. fossil ,How, the ,formed?, fuels, were 8. does ,uranium , What, how, it, and , electricity? , is, and, heat, generate ZADANIE 2

Match the highlighted words with the definitions below 1/____________sending out rays of light; bright; shining 2/____________to let energy spread into the area ,especially as part of a chemical reaction 3/____________ coming from the Sun 4/_____________relating to the heat in the interior of the earth 5/______________ vegetable matter used as a source of energy 6/_____________the production of electricity by the force of fast moving water; 7_____________a substance that consists of only one type of atom 8/______________the act or process of splitting or breaking into parts

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ZADANIE 3
Complete sentences 1-10 with the words given in the box. The words are given in the correct form. Each sentence should be completed with a different word.

hydropower ,solar ,radiant, biomass, fission, geothermal, releases, elements

1/ _____________ energy is the energy of electromagnetic waves. 2/ The fusion of hydrogen in stars____________ energy 3/ As seen from the Earth, a___________ eclipse occurs when the Moon passes between the Sun and Earth, and the Moon fully or partially blocks the Sun. 4/ Resources of ______________energy range from the shallow ground to hot water and hot rock found a few miles beneath the Earth's surface. 5/ Wood is still the largest ____________ energy resource today. 6/ Since ancient times,__________________ has been used for irrigation and the operation of various mechanical devices, such as watermills, sawmills, textile mills, dock cranes, domestic lifts and paint making. 7/ Mendeleev found and arranged the 65 _____________ in the Periodic Table 8/ ______ as encountered in the modern world is usually a deliberately produced man-made nuclear reaction induced by a neutron

© Politechnika Wrocławska - Studium Języków Obcych

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