u4reading1u4rading1u4reading1u4reading1.ppt

Wind energy, renewable. What? Renewable? What? Renewable? What? Renewable? What? Renewable? Geothermal (地热的) Energy Coal Oil Natural gas Uranium Wind (wind power) Sun (solar energy) Water (hydro-electric power) Plant waste (biomass energy) Hot springs or geysers (geothermal energy) The sea (tidal energy) 1.Who wrote the magazine article? What is the name of the magazine? 2.What are the names of the three scientists mentioned in the article? The different ideas between Dr. Janice Foster George Hambley * Save the earth! Look at the following pictures: What kind of energy do they belong to? Warming Up: What? Renewable? coal , non-renewable. oil, non-renewable. nuclear power , non-renewable. Water power, renewable. renewable Non-renewable Renewable 1. What is the greenhouse made and used for? 2. What are greenhouse gases? 3. What do greenhouse gases do? A greenhouse is made of glass and is used for growing plants, especially during cold weather. 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”? In the atmosphere surrounding the earth there are gases, which are called “greenhouse gases”, including carbon dioxide, methane(甲烷, 沼气) and water vapor. What do you think greenhouse gases do? They trap heat from the sun and therefore warm the earth. green house effect The Earth Is Becoming Warmer ---- But Does It Matter? → Sophie Armstrong, Earth Care. → Dr Janice Foster, Charles Keeling, George Hambley. 3. Do they agree with each another? → No. Fast reading Careful reading How many parts can the text be divided into? 1 2 3 4 6 7 Tips: Part 1 (para __) Part 2 (para ___ to ___) Part 3 (para ___ to ___) Part 4 (para ___) The ______ over the issue of global warming. How _______ _________ come about. List two