1、a,1,Natural Disasters,a,2,As we all know that “zainan” is called “Disaster” in English, but Im afraid that most of us dont know the origin of word “Disaster”.,Just as many other English words ,it was derived from Latin.If we split the word into two parts, we can see clearly that : dis-: negative, op

2、posite of. -astr: of the stars So disaster literally means evil star (bad star). The following is the English definition of disaster: A disaster is a natural or man-made event that negatively affects life, property, livelihood or industry often resulting in permanent changes to human societies, ecos

3、ystems and environment.,a,3,Today 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 continuously rec

4、orded the flood stories.,a,4,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 virtu

5、ous Noah and the species on the ark survived.,a,5,The most destructive natural disasters is earthquake.,a,6,As the epicenter of the earthquake rupture of two kinds of shock rock - wave (P wave, Primary Waves) and the longitudinal wave (S wave, Secondary waves) of two.,Earthquake wave reaches the sur

6、face first, so people first feel the ground up and down.,a,7,According to the causes of earthquakes, earthquakes can be divided into the following:,1. Tectonic earthquake Since the depths of underground rock dislocation, caused by the rupture of the earthquake known as tectonic earthquake. Such eart

7、hquake occurred most often, the GREatest damage, the earthquake accounted for about 90 percent of the world over.,2. Volcanic earthquake As 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 occu

8、r before the volcanic earthquakes, such earthquakes around the world accounts for only about 7 percent of the earthquake.,3. Earthquake collapse As the top of underground caves or mine collapse caused by the earthquake known as the collapse of the earthquake. Such relatively small-scale earthquake,

9、the number of little, if any, tend to occur in the limestone cave over the region or large-scale underground mining of the mining area.,a,8,4. Induced earthquake As water, oil field activities such as water flooding caused by the earthquake known as the earthquake-induced. Such earthquake only in ce

10、rtain oil reservoir area or region.,5. Artificial earthquake Underground nuclear explosions, explosives, blasting and other human-induced ground vibration known as the artificial earthquake. Artificial earthquake was caused by human activities in the earthquake. Such as industrial blasting, the vibr

11、ation caused by underground nuclear explosions in deep water in a high-pressure water and the large increases the pressure on the crust, sometimes induced earthquake,a,9,1. For your own safety and their families to hide in the table below, and other solid furniture,2. Shaking Commissioner of the fir

12、e immediately, as soon as the fire extinguishing,3. Do not panic ran to the outdoor,4.Open the door to ensure the exports,5. Outdoor occasions, to 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 pa

13、rking, closed to control the region,8.Its Important to note landslides, rock-drop or bluffs overlooking the tsunami,9. Evacuate to walk, carrying goods that should be at least limit,10. Do not listen to rumors, do not act rashly,Self-rescue tips,a,10,We often hear about the hurricane in news in the

14、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?,a,11,Originally, people named hurricanes after some unpopular statesmen or big names .Afterwards, scientists in Europe and the United States gave a list i

15、n 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.,a,12,On December 26, 2004, when many people still immersed in the joy of Christmas, An undersea earthquake triggered by the Indian Ocean tsunami attacked sev

16、eral Southeast Asian countries.,a,13,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 confronted with destructive disasters, people show great spirit of solidarity and fraternity through their actions.,a,14,

17、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 environment, 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 cov