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प्रश्न
On an outline map of the world, mark the Pacific Ring of Fire
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उत्तर
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संबंधित प्रश्न
Give a geographical reason.
Buildings collapsed at the foothills of the Himalayas because of an earthquake. Before collapsing, they were moving forward and backward.
Identify and name the internal movement.
Molten magma is thrown out of the earth’s mantle.
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.
Give reasons why an earthquake occurs.
Fill in the blank:
Most earthquakes occur on account of the strain in the _________.
State two natural causes of an earthquake.
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. |
Explain the three types of earthquake waves.
What is the difference between seismic focus and epicenter?
How are earthquakes distributed over the globe?
How an earthquake is caused?
Describe the world’s distribution of earthquakes.
Earthquakes occur in the Mid-Atlantic belt.
Why are earthquakes related to volcanoes?
Give two major causes of earthquakes.
Give one word for the following :
The surface position immediately above the origin of an earthquake.
How the earthquake can be recorded?
In India, the Himalayan region and the ______ valley are prone to earthquakes.
Name the point where the vibrations originate in an earthquake.
