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प्रश्न
For the formation of a rift valley, which of the following processes should occur in the earth’s crust?
पर्याय
Compression
Tension
Weathering
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उत्तर
Tension
Explanation:
When the energy waves within the earth’s mantle move away from each other, they create tension on the layers of rock surrounding the waves leading to fractures in the earth’s crust. Sometimes, two fractures can occur parallel to each other and the crust between these fractures subside forming the rift valley.
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संबंधित प्रश्न
Fill in the blank:
Most earthquakes occur on account of the strain in the _________.
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. |
Explain the three types of earthquake waves.
How are earthquakes distributed over the globe?
What is an Earthquake?
Name the instrument used to record Earthquakes.
Name the causes of earthquakes.
Give one word for the following :
The surface position immediately above the origin of an earthquake.
What is the point of the earth’s surface directly above the focus called?
Choose the odd one.
focus, epicenter, vent, seismic waves
