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[填空题]Earthquake
Every year earthquakes are responsible for a large number of deaths and a vast amount of destruction in various parts of the world. Most of these damaging earthquakes occur either in a narrow belt which surrounds the Pacific Ocean or in a line which extends from Burma to the Alps in Europe. Some of the destruction is directly caused by the quake itself. An example of this is the collapse of buildings as a result of the quake itself. Other damage results from landslides or major fires which are initiated by the quake.
These are about a million quakes a year. Fortunately, however, not all of them are destructive. The intensity of an earthquake is measured on the Richter Scale, which goes from upward. The highest scale recorded to date is 8.9. Major damage generally occurs from quakes ranging upward from 6.0.
The actual cause of the quake itself is the breaking of rocks at or below the earth’s surface. This is produced by pressure which scientists believe
[填空题]Every year earthquakes are responsible for a large number of deaths and a (36) amount of destruction in various parts of the world. Most of these damaging earthquakes occur either in a narrow belt which (37) the Pacific Ocean or in a line which (38) from Burma to the Alps in Europe. Some of the destruction is directly caused by the quake itself. An example of this is the (39) of buildings as a result of the quake itself. Other damage results from landslides or major fires which are (40) by the quake.
There are about a million quakes a year. (41) , however, not all of them are destructive. The (42) of an earthquake is measured on the Richter Scale, which goes from 0 upward. The highest scale recorded to date is 8.9. Major damage generally occurs from quakes (43) upwards from 6.0.
The actual cause of the quake itself is the breaking of rocks at or below the earth’s surface. This is produc
[简答题]
Earthquakes
An earthquake is one of the most terrifying phenomena that nature can dish up. We generally think of the ground we stand on as "rock-solid" and completely stable. An earthquake can shatter (粉碎) that perception instantly, and often with extreme violence.
Up until relatively recently, scientists only had unsubstantiated (无确实证据的) guesses as to what actually caused earthquakes. Even today there is still a certain amount of mystery surrounding them, but scientists have a much clearer understanding.
There has been enormous progress in the past century: Scientists have identified the forces that cause earthquakes, and developed technology that can tell us an earthquake’s magnitude and origin. The next hurdle is to find a way of predicting earthquakes, so they don’t catch people by surprise.
In this article, we’ll find out what causes earthquakes, and we’ll also find out why they can have such a devastating eff
