Unit 9. Natural disaters

Unit 9. Natural disaters tài liệu, giáo án, bài giảng , luận văn, luận án, đồ án, bài tập lớn về tất cả các lĩnh vực kin...

WELCOME TO OUR GROUP DISASTER I.Tsunami What is Tsunami ? • Tsunamis, also known as seismic sea waves, are a series of enormous waves created by an underwater disturbance such as an earthquake, landslide, volcanic eruption, or meteorite • A tsunami can move hundreds of miles per hour in the open ocean and smash into land with waves as high as 100 feet or more II.What cause Tsunami ? •• Drawing Plate Overriding slips, of tectonic plate causing subsidence and bulges plate under boundary before strain,releasing causing tectonic earthquake energy into uplift water The energy released produces tsunami waves II.Storm What is Storm ? • Storm is a heavy fall of rain, snow, or hail, or a violent outbreak of thunder and lightning, unaccompanied by strong winds Also called violent storm • Meteorology a wind of 64–72 miles per hour (29–32 m/sec) • It include: Ice storm, Blizzard, Snow-storm, Fire-storm, Dust devil, Wind-storm, Squall, Gale, Tropical cyclone, Hail-storm and Tornado II.What cause Storm ? • Storms are created when a center of low pressure develops with a system of high pressure surrounding it This combination of opposing forces can create winds and result in the formation of storm clouds, such as the cumulonimbus Small localized areas of low pressure can form from hot air rising off hot ground, resulting in smaller disturbances such as dust devils and whirlwinds Storm in U.S.A Storm in Texas THANK YOU FOR LISTEINING TO OUR GROUP