人教选修6Unit5ThepowerofnatureWarmingup[课件].ppt

;Warming up;Tsunami;Do you know any other natural disasters ?;;China suffered massive flooding concentrated in three areas during the 1998 summer. ;1976年7月28日凌晨3时42分，河北省冀东地区的唐山、丰南 一带突然发生7.8级强地震，新兴的重工业城市唐山蒙受惨重灾难，被夷为一片废墟。 ;hurricane;typhoon disaster;drought ;landslide;sandstorm;Heavy snowstorm hits Shandong Peninsula21 Dec 2005 ;Have you ever seen a volcano ?;volcano-eruption;公元79年维苏威火山的爆发掩埋了一座城市！ 虽然地球史上每一次火山爆发无不令地貌沧海桑田，但公元79年维苏威火山的爆发 却的确令一座城市获得了永生--庞贝无法躲过火山的劫难，但它被掩埋封存在渐渐冷却、凝固、变硬的火山灰中，最终竟躲过了上千年岁月的侵蚀。 ;Vesuvius entered the history of volcanology with the eruption of 79 AD, described by Pliny the Younger. The eruption destroyed Pompeii, Herculaneum, Oplonti and Stabiae and caused the death of Pliny the Elder among many other people. ;Have you ever considered how weak humans are compared with a volcano, hurricane or earthquake?;What do you know about volcano? Do you know how a volcano erupts?;How is a volcano formed?;an extinct volcano;Where is most possible for a volcano to erupt?;imagine;Preview new words in this unit and the passage on P34. ;See you next time !