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Natural Disaster ? Earthquake ? Volcano eruption ? Typhoon ? Forest fire ? Tsunami ? Plague Earthquake How Harmful Earthquake is? 2022 Wenchuan Earthquake ? magnitude ? More than 69000 died ? 18000 disappeared ? Direct economy lost: 845 billion 2022 Japan Earthquake ? magnitude ? More than 14,000 died ? 10,000 disappeared ? More than 11,000 bee homeless ? Nuclear leak(核泄漏 ) Basic Knowledge about Earthquake ? Earthquake: result of a sudden release of energy in the Earth Crust(地殼 ) that creates seismic waves(地震波). ? Measured by energy it released, Richter magnitude scale( 里氏地震級 ) . Scale phenomenon frequency Under No feeling 1000 per day Felt, building shake, no big damage More than 5,0000 times per year damage within 100 km2 area, some building collapsed. 100 times per year Above serious damage over 1000km2 area, lots of building fall down 1 time per year Types of Earthquake ? Fault(斷層 ) types : normal, reverse (thrust) and strikeslip ? Depth of earthquake occurring: Shallowfocus(less than 70km) midfocus(70300km) deepfocus (300 to 700km) ? Shaking and ground rupture ? Landslides and avalanches( 山體滑坡、雪崩 ) ? Fires ? Soil liquefaction( 地陷 ) ? Tsunami( 海嘯 ) ? Floods Effects of Earthquake Earthquake safety tips ? If you are indoors: stay there. Quickly move to a safe location in the room such as under a strong desk, a strong table, or along an interior wall. ? If you are cooking: turn off the stove and take cover. ? If you are outdoors: move to an open area ? If you are driving: slow down smoothly and stop on the side of the road Thanks ! Volcano eruption The Word Volcano The word volcano es from the Roman god of fire, Vulcan. Structure of volcano 單擊此處添加內(nèi)容 Types of Volcanoes 單擊此處添加內(nèi)容 單擊此處添加標(biāo)題 單擊此處添加內(nèi)容 單擊此處添加標(biāo)題 單擊