This is an excerpt from an article that was published in a magazine titled "World of Wonder" and a portion of it is a study material in the CG. State board course. I am giving it for a reference purpose for the students of CG.the Board.
The titled of the chapter given in the book is- "Can We Stop Earthquake?" The present write-up is a set of questions and answers given in the book.
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| Earthquake in Alaska (Photo-Google) |
Ans. There are three reasons for the earthquake
- The first reason is the gravitational pull of the sun and the moon on the earth which causes deep stress inside the earth.
- The second one is related to the movement of the earth from one side to the other on its axis.
- The third cause is the result of the presence of water in between the deep-lying rocks.
Q.2. Why were only a few lives lost in the 1968 Alaska earthquake?
Ans. Becuase Alaska is relatively less populated part of the world. That's the reason only a few lives were lost the earthquake.
Q3. What tells you that the Alaska earthquake was a particularly powerful one?
In 1968 Alaska experienced the earthquake. It is said to be particularly powerful one because when this earthquake occurred the whole area moved about 80 feet farther west into the Pacific Ocean. Almost the whole of the subcontinent was moved by this earthquake.
Q4. How were our present continents formed?
Ans. Our present continents were formed in a strange way. it is presumed that the deep rock under the earth formed huge islands which started floating on the softer and hotter rocks beneath the earth. Slowly they got separated and huge land masses were formed which were known as continents.
Q. 5. How do we know that another earthquake is likely to occur in California?
Ans. According to the scientist, another earthquake is likely to occur in California within the next 8000 years, California is situated on the earthquake zone; the San Andreas Fault. There was an earthquake in Los Angeles in 1971. From their experiments and investigations, the scientists came to the conclusion that another disastrous earthquake may occur in California.
Q 6. Why do people not leave the cities in Calfornia to escape the expected earthquake?
Ans. It is said that the expected earthquake may hit within coming 8000 years. As the exact time of the earthquake is unpredictable, so it is not practical for the people to leave the cities.
Q 7. How do Californian scientists hope to get an early warning of an earthquake?
Ans. As the Californian scientist is aware of the coming disastrous earthquake, they are trying their best to save the people from it. They have built two scientists on a part of San Andreas Fault, at a distance of four miles, connected with the laser beam. If there is any tremor, the beam will be disturbed and that will create a warning of the coming earthquake for the people.
Q 8. What is the suspected cause of the 1967 earthquake in the Deccan plateau?
Ans. The suspected cause of the earthquake was the constructions of the dam which built in 1960.
Q 9. Where do scientists plan to set off the controlled earthquake quake?
Ans. It is planned to set off in a part of the San Andreas Fault.
Q. 10. How might the setting off of controlled earthquakes help to prevent uncontrolled earthquakes?
Ans. It will lead to a process by which pressures underground can be artificially destroyed by a series of small controlled earthquake and will help to prevent an uncontrolled earthquake.
To know about the uses of verb please read my blog titled VERB.
Use of HAVE TO, HAS TO, MUST
Q. 5. How do we know that another earthquake is likely to occur in California?
Ans. According to the scientist, another earthquake is likely to occur in California within the next 8000 years, California is situated on the earthquake zone; the San Andreas Fault. There was an earthquake in Los Angeles in 1971. From their experiments and investigations, the scientists came to the conclusion that another disastrous earthquake may occur in California.
Q 6. Why do people not leave the cities in Calfornia to escape the expected earthquake?
Ans. It is said that the expected earthquake may hit within coming 8000 years. As the exact time of the earthquake is unpredictable, so it is not practical for the people to leave the cities.
Q 7. How do Californian scientists hope to get an early warning of an earthquake?
Ans. As the Californian scientist is aware of the coming disastrous earthquake, they are trying their best to save the people from it. They have built two scientists on a part of San Andreas Fault, at a distance of four miles, connected with the laser beam. If there is any tremor, the beam will be disturbed and that will create a warning of the coming earthquake for the people.
Q 8. What is the suspected cause of the 1967 earthquake in the Deccan plateau?
Ans. The suspected cause of the earthquake was the constructions of the dam which built in 1960.
Q 9. Where do scientists plan to set off the controlled earthquake quake?
Ans. It is planned to set off in a part of the San Andreas Fault.
Q. 10. How might the setting off of controlled earthquakes help to prevent uncontrolled earthquakes?
Ans. It will lead to a process by which pressures underground can be artificially destroyed by a series of small controlled earthquake and will help to prevent an uncontrolled earthquake.
To know about the uses of verb please read my blog titled VERB.
Use of HAVE TO, HAS TO, MUST
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