Magnitude of Earthquake
Magnitude of Earthquake
Magnitude of an Earthquake: The most common scale used to measure the magnitude of an earthquake is the Richter scale. An earthquake of magnitude 2.0-4.0 on the Richter scale is not too damaging. One of magnitude 4-8 is considered a moderate to severe earthquake. An earthquake of magnitude greater than 8-9 would be very severe. On 26 January 2001, there was a major earthquake of magnitude 7.6-8.1 in Gujarat. Records of earthquakes
| Magnitude | Earthquake effect |
| 2.5 or less | Usually not felt, but can be recorded by seismograph. |
| 2.5 to 5.4 | Often felt, but only causes minor damage. |
| 5.5 to 6.0 | Slight damage to buildings and other structures. |
| 6.1 to 6.9 | May cause a lot of damage in very populated areas. |
| 7.0 to 7.9 | Major earthquake. Serious damage. |
| 8.0 or greater | Great earthquake. Can totally destroy communities near the epicenter. |
Earthquakes with magnitude greater than 7.5 are called ______________________. | |||
| Right Option : A | |||
| View Explanation | |||
Which of the following are correct : (a) When the magnitude of earthquake is 2.5 or less,it usually not felt, but can be recorded by seismograph. (b) When the magnitude of earthquake is 2.5 or less,it is great earthquake. Can totally destroy communities near the epicenter. (c) When the magnitude of earthquake is 8 or more,it is great earthquake. Can totally destroy communities near the epicenter. | |||
| Right Option : C | |||
| View Explanation | |||
The instrumental scales used to describe the magnitiude of an ___________ began with the Richter magnitude scale in the 1930s. | |||
| Right Option : A | |||
| View Explanation | |||
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