Unit 4 《Earthquakes》Warming up课件17（28张PPT）（人教版必修1）

Warming up,Unit4 Earthquake,What happened in the Indian Ocean at the end of last year?,A terrible tsunami broke out on 26th December. More than 200,000 people were killed.,Question,A tsunami is an undersea earthquake.,Can you tell some famous land earthquakes?,WHAT IS TSUNAMI?,Pakistan Earthquake 2005,On October 8th, a terrible earthquake which measured 7.6 on the Richter scale happened in Pakistan, Afghanistan and India. And Pakistan was the most serious-affected country, in which 38,000 people died, 62,000 people injured and 25,000 people were homeless.,San Francisco 1989,A wide and busy road fell onto the other one,Many people were killed in their cars, but a few lucky ones were not hurt.,These buildings were over 50 years old, so they were not strong enough.,There were a lot of fires all over the city. The electricity was cut off for several days too.,San Francisco 1989,On October 17, 1989,an earthquake measuring 7.1 on The Richter scale struck San Francisco,The Tangshan Earthquake in 1976,On July 28, 1976 , one of the largest earthquakes that measured 8.2 on the Richter scale hit the industrial city of Tangshan in Hebei , China, which left 242,419 people dead,164,581 people severely injured. The earthquake hit at 3:42 in the morning, lasting for around 15 seconds. It was followed by a major 7.1 magnitude aftershock some 15 hours later, increasing the death toll.,Tangshan Earthquake 1976,What might happen in an earthquake?,The buildings, the roads, the railway tracks, bridges would be destroyed. People would be killed or be trapped. Big holes would appear in the earth.,Discussion,Task 1,Lets have a quiz!,When an earthquake happens, do you know how to rescue yourself?,Dont be nervous and keep calm. Dont try to run out of the classroom. Protect your head by putting your bag on your head. Squat or sit down under your desk. Leave the classroom after the earthquake.,Task 2,Do you know any other natural disasters? What will happen during the disasters?,Earthquake,Floods,Drought,Typhoon/hurricane,Tornadoes,Volcano eruption,natural disasters,floods,drought,hurricanes,tornadoes,volcano eruption,earthquake,Task 3,Do you know why an earthquake happens?,San Francisco,Pacific plate,American plate,Eurasian plate,India plate,African plate,Antarctic plate,Paragraph 4,Pacific plate,North,South,West,East,American plate,Earthquake Happens,同学们,来学校和回家的路上要注意安全,同学们,来学校和回家的路上要注意安全,