1、Introduction and readingearthquakefiretornadofloodMud-rock flowhurricanesnow disastertyphoon地震地震火灾火灾龙卷风龙卷风洪水洪水泥石流泥石流飓风飓风雪灾雪灾台风台风闪电闪电雷暴雷暴火山喷发火山喷发沙尘暴沙尘暴海啸海啸lightningThunderstormvolcanic eruptionSandstormTsunamiListen to What is a Tornado and fill in the blanksA tornado is a rotating column of air _ a
2、thunderstorm_ the ground.The most_ have winds of more than _kilometers per hour.They _in the area from Texas in the southeast to South Dakota in the north.400fromtoviolentoccurThey can _ cars,trains and houses.They can _ houses,but leave the furniture inside exactly where it was.The worst one occurr
3、ed in 1925,affecting _US states.More than _people had been killed and _ had been injured.pick up destroythree 700 2,700Answer the questions about Hurricane1.What is a hurricane?Hurricanes are strong tropical storms.2.What happens during a hurricane?It causes huge waves,heavy rain and floods.3.When w
4、as the worst hurricane of all time?On the 8th Semptember19004.What is the result of the worst hurricane?The disaster killed 6,000 people and destroyed 3,600 buildings.moved toCanadafamousNew Yorkdied in _Galvestonended in the seacoffinstreamPrince Edward Island CanadaAn Extraordinary EventTrue or Fa
5、lse.1.All tornadoes have winds of more than 400 kilometres per hour.2.There are more tornadoes occurring in the US than in other parts of the world.3.Tornadoes cant destroy furniture because they are not violent enough.Careful reading4.In the US,there are usually about 80 people killed in tornadoes
6、every year.5.The worst tornado in history killed at least 700 people.6.Every year there are six Atlantic hurricanes.7.Both the worst tornado and the worst hurricane occurred in the US.8.The worst hurricane of all time killed about one-sixth of the population in the US.9.Charles Coghlan didnt become
7、famous until he moved to New York.10.Coghlans coffin was destroyed by the 1900 Galveston hurricane.11.It was only because of the hurricane that Coghlans body could travel back to Canada.SummaryDefinitionSpeedWhereDamageThe worst onea rotating column of air from a thunderstorm to the groundStrong tro
8、pical storms400km/hin the US,from Texas to South Dakotapick up/put down/take off/destroy houses1925,three states,over 700 killed,2,700 injured120km/h or morein the southern Atlantic Ocean,the Caribbean Sea and the Gulf of Mexicocause huge waves,heavy rain and floods8th Step.1900 in Galveston,Texaski
9、lled 6,000,detroyed 3,600buidings 2008年年5月月12日，中国汶川发生日，中国汶川发生8.0级地震。级地震。据民政部门报道，截至据民政部门报道，截至2008年年9月月25日日12时，时，汶川地震已确认汶川地震已确认69227人遇难，人遇难，374643人受伤，人受伤，失踪失踪17923人。人。Discussion：Faced with the earthquake,what should we do?First of all,Keep calm.Dont panic and follow teachers instructions.If you are in
10、 the class,quickly hide yourself under your desk.Or move out of the building in order and stay in safe place.If you are on the playground,stay in a crouch position covering your head with both hands.Remember to avoid tall building.If you are in the tall building,dont try to jump off.Always help each other to get through the quake.Homework Describe an earthquake 1.What is an earthquake?(definition)2.What damage can it cause?3.The worst earthquake of all time in China.Thanks for your listening!
