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1、Teaching aims:1. Train the students listening ability. 2. Train the students listening ability. 3. Train the students ability to use the Internet to search for some useful information. 4. Train the students ability to cooperate with others. Important points:Train the students speaking ability by des
2、cribing, talking and discussing. Difficult points:Train the students listening ability. How much do you know about an earthquake?Many people diedPeople lost their homes Many things were destroyed.大家一起来欣赏一首大家一起来欣赏一首为汶川地震创作的歌为汶川地震创作的歌曲曲直到永远直到永远青海省玉树县2010年4月14日发生两次地震，最高震级7.1级The United StatesSan Franci
3、sco Why do earthquakes happen? Scientists explain that the outside of the earth is made of a number of different plates. At San Francisco the Pacific plate which is moving towards the northwest meets the North American plate. The Pacific Plate is moving very slowly at 5.3 centimeters a year. Sometim
4、es these two plates stop and do not move for years. Then suddenly, they jump and an earthquake is felt. As a result of the movement of these plates, west America near the sea has always been a bad place for earthquakes. When the 1906 earthquake happened, the pacific plate jumped 5-6 metres to the no
5、rth.Pacific plateAmerican plateEurasian plate Indian plateAfrican plateAntarctic plateSan FranciscoPacific plate American plateSan FranciscoTangshan, HebeiJuly 28th, 1976Roads got huge cracks.Steam burst from holes or wells in the ground. Water pipes were destroyed.Houses fell down. Brick buildings
6、were destroyed.The railway tracks became useless pieces of steel.People died or were injured. Families were killed and many children were left without parents.In a few seconds, a large city lay in ruins. Everything was destroyed. It seems the world was at an end.Natural disasters occur throughout th
7、e world, and China has a particular problem with earthquakes. Tangshan earthquake in 1976 is a case in point. So it is especially important to take steps to reduce the damage caused by quakes.the person who studies quakes.the machine to record seismic waves. the inventor of the 1st seismologySeismologist:Seismometer:Zhang Heng in Han Dynasty:the study of Quake recordingsSeismology:1. Talk about a big earthquake that happened in the world with your partner.2. Learn the new words and phrases for the unit.HOMEWORK
