1、Natural-Disaster-自然灾害PPT-Class-presentationToday we focus on some information about“Natural Disaster”When mentioning natural disasters,Im afraid that flood comes to the first place in our mind.We can say that human beings have been fighting against flood since the emergence of mankind,also we contin
2、uously recorded the flood stories.In the“Bible”(the Bible)the first chapter“The Creation”(Genesis)recorded that God decided to punish his bad subjects(wicked mankind)with heavy rains triggering major floods(deluge),the rain had fallen 40 days and nights,flooded the earth 150 days,only a virtuous Noa
3、h and the species on the ark survived.The most destructive natural disasters is earthquake.As the epicenter of the earthquake rupture of two As the epicenter of the earthquake rupture of two kinds of shock rock-wave(P wave,Primary Waves)kinds of shock rock-wave(P wave,Primary Waves)and the longitudi
4、nal wave(S wave,Secondary waves)and the longitudinal wave(S wave,Secondary waves)of twoof two.Earthquake wave reaches the surface first,so Earthquake wave reaches the surface first,so people first feel the ground up and down.people first feel the ground up and down.According to the causes of earthqu
5、akes,earthquakes can be divided into the following:1.Tectonic earthquakeSince the depths of underground rock dislocation,caused by the rupture of the earthquake known as tectonic earthquake.Such earthquake occurred most often,the GREatest damage,the earthquake accounted for about 90 percent of the w
6、orld over.2.Volcanic earthquakeAs the volcano,such as magmatic activity and gas explosions caused by the earthquake known as the volcanic earthquake.Only in areas of volcanic activity may occur before the volcanic earthquakes,such earthquakes around the world accounts for only about 7 percent of the
7、 earthquake.3.Earthquake collapseAs the top of underground caves or mine collapse caused by the earthquake known as the collapse of the earthquake.Such relatively small-scale earthquake,the number of little,if any,tend to occur in the limestone cave over the region or large-scale underground mining
8、of the mining area.4.Induced earthquakeAs water,oil field activities such as water flooding caused by the earthquake known as the earthquake-induced.Such earthquake only in certain oil reservoir area or region.5.Artificial earthquakeUnderground nuclear explosions,explosives,blasting and other human-
9、induced ground vibration known as the artificial earthquake.Artificial earthquake was caused by human activities in the earthquake.Such as industrial blasting,the vibration caused by underground nuclear explosions in deep water in a high-pressure water and the large increases the pressure on the cru
10、st,sometimes induced earthquake1.For your own safety and their families to hide in the table below,and other solid furniture 2.Shaking Commissioner of the fire immediately,as soon as the fire extinguishing 3.Do not panic ran to the outdoor 4.Open the door to ensure the exports5.Outdoor occasions,to
11、protect your head and avoid the danger 6.In department stores,theatres,according to the instructions of the staff of Action 7.Automotive on-street parking,closed to control the region 8.Its Important to note landslides,rock-drop or bluffs overlooking the tsunami 9.Evacuate to walk,carrying goods tha
12、t should be at least limit 10.Do not listen to rumors,do not act rashly Self-rescue tipsSelf-rescue tipsWe often hear about the hurricane in news in the United States.Hurricane is just the same as the Typhoon.Both of them are tropical cyclone.Do you know how scientists give name of hurricanes?Origin
13、ally,people named hurricanes after some unpopular statesmen or big names.Afterwards,scientists in Europe and the United States gave a list in which there are 26 names from A to Z.Whats more,if one of the hurricanes do great damage on our society,that name will never be used again.On December 26,2004
14、,when many people still immersed in the joy of Christmas,An undersea earthquake triggered by the Indian Ocean tsunami attacked several Southeast Asian countries.The tsunami killed 270,000 people.What is gratifying is that people around the world are eager to give a hand to those victims.Always,when
15、confronted with destructive disasters,people show great spirit of solidarity and fraternity through their actions.Natural disaster is terrible,but not every disaster that occurred for no reason.People want to have better living conditions by continuous consumption of resources,polluting the environm
16、ent,and undermining the laws of nature.Ultimately more disasters occurred.Therefore,we have to take immediate measures to protect our environment,do more contributions rather than harms to it.Just as the covenant made in Bible by the God and Noah,as long as your heart is full of kindness,flood will not destroy all the creatures on the earth,sowing,harvesting,cold and heat,summer and winter,day and night,life could be long forever.此课件下载可自行编辑修改，仅供参考！此课件下载可自行编辑修改，仅供参考！感谢您的支持，我们努力做得更好！谢谢感谢您的支持，我们努力做得更好！谢谢
