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प्रश्न
How are earthquakes useful?
उत्तर
Earthquakes cause energy release to put the earth in good shape; several landforms are uplifted to build large plains e.g. Sagami Bay uplifted 200 m, Landslides cause the formation of lakes in the Himalayan region.
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संबंधित प्रश्न
Identify and name the internal movement.
Molten magma is thrown out of the earth’s mantle.
Give reasons why an earthquake occurs.
Fill in the blank:
___________ are the first earthquake waves to be recorded on a seismograph of an earthquake.
Fill in the blank:
The last of the earthquake waves to arrive on the surface of the earth are ___________ waves.
State two natural causes of an earthquake.
Match the Columns.
| Column A | Column B |
| 1. Tsunami | (a) The waves that make the inhabitants feel the ground motion. |
| 2. Seismograph | (b) The instrument for measuring the intensity of earthquakes. |
| 3. S-waves | (c) Harbour waves generated by oceanic earthquakes. |
| 4. Richter scale | (d) The point on the earth surface directly above the seismic focus. |
| 5. Epicentre | (e) An instrument for recording the movement of earthquake waves. |
How an earthquake is caused?
Name the instrument used to record Earthquakes.
Name some Earthquakes which caused great damage.
What was the cause of the Koyna earthquake in India?
Describe the main type of Earthquake Waves.
Give one word for the following :
An instrument used for recording all the earth tremors and earthquakes.
The earthquake waves are recorded by an instrument known as ______.
Seismology is the study of ______.
Choose the odd one
Name the point where the vibrations originate in an earthquake.
What is the point of the earth’s surface directly above the focus called?
