(课件网) Can you tell what we use energy for? lamp things that use energy in our lives micro-wave oven cassette player heating television hairdryer video player fridge computer washing machine stove Do you know where energy comes from or how energy is produced? How many sources of energy can you list? Wind energy is used as power to produce electricity. windmills Electricity is produced by burning coals. coal power stations Oil is refined and made pure. oil refineries Nuclear energy is converted into electricity. nuclear power plant pieces of equipment on a roof that collects energy from sunlight in order to heat water and produce electricity solar panels Water are kept back and raised its level for irrigation or for producing electricity. hydro-electric dams geothermal (地热的) energy plant Electricity is generated from hot dry rocks. lights television cassette player computer fridge stove washing machine hairdryer video recorder coal oil natural gas wind(power) sun(solar energy) water(hydro-electric power) the sea ( tidal energy) uranium(nuclear energy) plant waster(biomass energy) Things that use energy Sources of energy An energy source is “renewable” when supplies of it never run out and “non-renewable” when one day they will run out. What energy sources are renewable and which are non-renewable? wind energy renewable solar energy renewable hydroelectric power renewable geothermal energy renewable tidal energy renewable nuclear power plant non-renewable an oil refinery(精炼厂) non-renewable coal power station non-renewable natural gas non-renewable The element uranium does not occur in pure form in nature but is found in minerals such as carnotite（钒钾铀矿）, pictured above. uranium Ore (铀矿石) non-renewable 地热 生物量 What is the building made of and what is it used for? It is made of glass and plants can grow in it when the weather is cold outside. Have you ever seen a greenhouse? How does it work? The air inside is warm because the glass traps the heat from the sun and keeps it from escaping. This makes the greenhouse heat up and so the plants can grow throughout the cold period. What are the “greenhouse gases”? What do you think greenhouse gases do? greenhouse effect Greenhouse gases perform the same function as the glass in a greenhouse -- they trap the heat of the sun and keep the air surrounding the earth warm. What’s greenhouse effect? the effect of global warming the effect of global warming Global warming / The warming of the earth. Skim the text and find out the main topic of the article. What is the purpose of the first paragraph? What are the diagrams for? To illustrate points by providing evidence. To introduce the topic. Sophie Armstrong wrote the magazine article. The name of the magazine is “Earth care”. 2. What are the names of the three scientists mentioned in the article? They are Dr. Janice Foster, Charles Keeling and George Hambley. Who wrote the magazi ... ...
