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CNN新闻: Five things you should know about earthquakes
有关地震5点常识

燕山大学刘立军宋葳编写

?TRANSCRIPT

CHAD MYERS, AMS METEOROLOGIST:

Number one, an earthquake occurs when two blocks of the Earth slip fast each other. Now, for most of the time, those blocks are together with friction. But they are building up energy because they are moving in different directions. When one block decides to slip, all of a sudden, that energy is released by seismic waves, kind of like ripples on a pond, creating the earthquake.

Number two, an earthquake can occur very near the surface of the Earth. Those earthquakes are typically very destructive, or as deep as 400 miles down into the crust. Now, where the shaking actually happens, that`s called the hypocenter. But directly above it, on the surface, that`s called the epicenter.

Number three, the power of an earthquake is called magnitude. Now, the intensity of the shaking can vary depending on the geography, the typography, or even the depth of the quake. Now, the USGS says there are 500,000 detectable quakes every year. One hundred thousand can be felt and 100 will create damage.

Number four, earthquakes themselves actually don`t kill that many people. It`s the natural and manmade structures that fall to the ground during the shaking that injure and kill.

Number five, the majority of all earthquakes and volcanoes happen along plate boundaries. The largest is the Pacific plate and its series of boundaries all along the Pacific Ocean known as the Ring of Fire.

Adapted from 关于地震你应该知道的5点

◆VOCABULARY

1. seismic adj. connected with or caused by earthquakes 地震的；地震引起的。例如： seismic waves 地震波

2. crust n. (可数名词, 不可数名词) a hard layer or surface, especially above or around sth. soft or liquid （尤指软物或液体上面、周围的）硬层，硬表面。例如：
○a thin crust of ice一层薄冰
○the earth's crust地壳

3. hypocenter n. （地震的）震源

4. epicenter n. 震中，中心

◆QUESTIONS

Read the passage. Then listen to the news and fill in the blanks with the words you hear.

Number one, an earthquake occurs when (1) ______________________________________. Now, for most of the time, those blocks are together with friction. But they are building up energy because they are moving in different directions. When one block decides to slip, all of a sudden, that energy is released by seismic waves, kind of like ripples on a pond, creating the earthquake.

Number two, an earthquake can occur very near (2) __________________________________. Those earthquakes are typically very destructive, or as deep as 400 miles down into the crust. Now, where the shaking actually happens, that`s called the hypocenter. But directly above it, on the surface, that`s called the epicenter.

Number three, the power of an earthquake is called (3) _______________________. Now, the intensity of the shaking can vary depending on the geography, the typography, or even the depth of the quake. Now, the USGS says there are 500,000 detectable quakes every year. One hundred thousand can be felt and 100 will create damage.

Number four, earthquakes themselves actually (4) _____________________________. It`s the natural and manmade structures that fall to the ground during the shaking that injure and kill.

Number five, the majority of all earthquakes and volcanoes happen (5) _____________________. The largest is the Pacific plate and its series of boundaries all along the Pacific Ocean known as the Ring of Fire.

◆KEY

Number one, an earthquake occurs when (1) two blocks of the Earth slip fast each other. Now, for most of the time, those blocks are together with friction. But they are building up energy because they are moving in different directions. When one block decides to slip, all of a sudden, that energy is released by seismic waves, kind of like ripples on a pond, creating the earthquake.

Number two, an earthquake can occur very near (2) the surface of the Earth. Those earthquakes are typically very destructive, or as deep as 400 miles down into the crust. Now, where the shaking actually happens, that`s called the hypocenter. But directly above it, on the surface, that`s called the epicenter.

Number three, the power of an earthquake is called (3) magnitude. Now, the intensity of the shaking can vary depending on the geography, the typography, or even the depth of the quake. Now, the USGS says there are 500,000 detectable quakes every year. One hundred thousand can be felt and 100 will create damage.

Number four, earthquakes themselves actually (4) don`t kill that many people. It`s the natural and manmade structures that fall to the ground during the shaking that injure and kill.

Number five, the majority of all earthquakes and volcanoes happen (5) along plate boundaries. The largest is the Pacific plate and its series of boundaries all along the Pacific Ocean known as the Ring of Fire.

时长：1.5分钟

语速：135wpm

来源：刘立军宋葳 2018-01-03

练习 | CNN新闻：有关地震5点常识

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