Advertisements
Advertisements
Question
Give two major causes of earthquakes.
Advertisements
Solution
Two major causes of earthquakes are faulting associated with tectonic forces and the movements due to volcanic eruptions.
RELATED QUESTIONS
For the formation of a rift valley, which of the following processes should occur in the earth’s crust?
Arrange the following statements in chronological order in which an earthquake occurs.
- The earth’s surface vibrates.
- The plates suddenly move.
- Due to the movements in the mantle, compression goes on increasing.
- Along the weak points ( faultlines) rocks break apart.
- Stored energy is released in the form of seismic waves.
Fill in the blank:
Most earthquakes occur on account of the strain in the _________.
Fill in the blank:
___________ are the first earthquake waves to be recorded on a seismograph of an earthquake.
Fill in the blank:
The giant sea waves caused by earthquakes in the oceans are called ___________.
Fill in the blank:
About 70 percent of the earthquakes occur in the _________________ Belt.
How are earthquakes useful?
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. |
Is it possible to predict an earthquake? Give reasons to support your answer.
Name the instrument used to record Earthquakes.
Name some Earthquakes which caused great damage.
What was the cause of the Koyna earthquake in India?
Why are earthquakes related to volcanoes?
Name three causes of Earthquakes.
Give one word for the following :
The surface position immediately above the origin of an earthquake.
What is Seismograph?
The earthquake is measured by the ______ scale.
Give a note on Tsunami 2004.
An earthquake of magnitude ______ scale can cause damage from things falling.
