How to Prepare for Earthquakes

Unit Six How to prepare for EarthquakesStep ⅠW arm-up ActivitiesDiscuss the following questions as the lead-in to the text1..Did you still remember 26th October,2005? Something special happened in Wuhan.2. What’s an earthquake?Earthquake: a sudden shaking of the earth's surface that often causes a lot of damages (LDOCE) Earthquakes are one of the most powerful natural forces that can disrupt(扰乱) our daily lives.Even if you do not remember seeing or feeling an earthquake, you have probably lived through thousands of tiny earthquakes during your lifetime. The earth is constantly creating earthquakes.3. Think about the following questions:1).Why do earthquakes occur?2)Why do some locations such as California and Japan receive so many earthquakes?3).Can we design a city to better withstand an earthquake?4).Can we stop earthquakes before they occur? Should we try?4.Basic facts about earthquakes1)Earthquakes are usually measured by Richter Scale.2)The largest recorded earthquake in the world was a magnitude 9.5 (Mw) 震级in Chile on May 22, 1960It is estimated that there are 500,000 detectable earthquakes in the world each year. 100,000 of those can be felt, and 100 of them cause damage.3) Most earthquakes occur at depths of less than 80 km (50 miles) from the Earth's surface.4) The world's deadliest recorded earthquake occurred in 1556 in central China. It struck a region where most people lived in caves carved from soft rock. These dwellings collapsed during the earthquake, killing an estimated 830,000 people. In 1976 another deadly earthquake struck in Tangshan, China, where more than 250,000 people were killed.5).Most earthquake waves have a frequency of less than 20 Hz, so the waves themselves are usually not heard. Most of the rumbling noise heard during an earthquake is the building and its contents moving. 6).The majority of the earthquakes and volcanic eruptions occur along plate boundaries such as the boundary between the Pacific Plate and the North American plate. One of the most active plate boundaries where earthquakes and eruptions are frequent, for example, is around the massive Pacific Plate commonly referred to as the Pacific Ring of Fire.Step ⅡDiscourse Analysisa. To predict when an earthquake is going to happen (Pare .1).1. Scientists have wired the Earth and sea to defect movements.2. People have found that before an earthquake leas……3. Experimental data show that……b. To prevent the great destruction of property caused by earthquakes: (Para .2).1. Many hew structures are built…….2. Architects design buildings so that the building’s columns and horizontal beams are of equal strength……3. Many hew houses……4. Concrete pillars ……c. To prepare for the possibility of a great earthquake (Para 3-6)d. conclusion (Para 7).Step ⅢLanguage Points1. detect: vt. to discover or ascertain the existence, presence, or fact of; to discern the true nature orcharacter of发现或查觉到…的存在, 洞察辨明真实的本质e.g. I detected a smell of gas.我察觉到一股煤气味。

7.3 magnitude 20 seconds US $101.5 billion （video）
US $146.5 billion
• Have you ever been in an earthquake? • What do you think you would do first if the room started to shake?
Step2:
Drop to your knees and curl lap, this minimize injuries by making yourself a smaller target. Next, cover your head, neck and chest by ? sth. sturdy like a table. Finally, hold on to your cover. If there is nothing around? cover your head with your hands, stay put until the tremor stopped. Forget the ? advice about standing in a doorway. In most modern buildings, doorways are no stronger than any other area.
water & food
radio receiver first-aid supplies
torch
extra batteries More
spade
More
tent
rope
clothing
fire extinguisher
heavy shoes or boots

Step three: listen to it
Listen to the text and answer the following
question
How can we know about warning signs of earthquakes? What animals show what signs of earthquakes? How are most of the people killed in an earthquake? What building structures might prevent the great destruction of property? What should people do to prepare their houses? What should people need for their earthquake survival supplies, and why How can family members keep in touch during an earthquake? What should be a major emphasis for all government programs and earthquake-related research projects?
Unit 6:How to prepare for earthquakes
Step one : an idiom a day
beat the air
cast pearls before swine Hercules’ choice ['herəkli:z]
cleanse/clean the Augean stable(s)

地震救生储备还包括无线电接收器、手电、备用电池、急 救用品、铁锹、帐篷、绳子和保暖衣物。 专家们还提出了以下建议： 1、receiver：①接受者，接收器②接待者③电话
听筒④ （破产公司的）官方接管人 2、battery:①炮组，炮兵连②电池（组） （a set of cells）③一系列，一套，一组 搭配：a battery of ①一连串的②一套（组）的 Eg:a battery of questions 一连串的质问 搭配： assault and battery人身攻击.n. 3、spade①铲子，锹；②（纸牌中的）黑桃 搭配： calls a spade a spade直言不讳 扩展：纸牌里：红桃 heart ；梅花 club ；方块 diamond； 黑桃 spade
1、It is best to do sth: 最好（做）什么 同义： It’s better to do sth had better do sth 2、gallon:加仑（容积单位）
体积单位（Cubic Measure） 立方米（cubic meter) 容积单位（Capacity Measure） 立方毫米（cubic 升（liter） millimeter） 毫升（milliliter） 立方厘米（cubic 分升（deciliter） centimeter） 常衡单位（重量单位） 厘升（ centiliter ） 立方分米(cubic (Avoirdupois Weight ) 品脱（pint） decimeter ） 克(gram) 夸脱（ quart ） 立方英寸（cubic inch） 千克(kilogram) 加仑（ gallon ） 立方英尺（cubic foot） 吨(ton) 配克（ peck ） 立方码（cubic yard） 格令(grain) 蒲式耳（ bushel ） 打兰(dram) 盎司(ounce) 磅(pound ) 英石(stone) 英担(hundredweight )