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प्रश्न
Define Earthquake.
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उत्तर
A sudden movement of a portion of the earth’s crust which produces a shaking or trembling is known as an earthquake.
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संबंधित प्रश्न
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. |
Describe how earthquakes are caused on the surface of the earth.
What is the difference between seismic focus and epicenter?
How is the intensity of an earthquake measured?
How an earthquake is caused?
Describe the world’s distribution of earthquakes.
Name some Earthquakes which caused great damage.
Earthquakes occur in the Mid-Atlantic belt.
Why are earthquakes related to volcanoes?
Give one word for the following :
The surface position immediately above the origin of an earthquake.
Choose the odd one
What is Seismograph?
On an outline map of the world, mark the Pacific Ring of Fire
The earthquake is a ______ activity.
In India, the Himalayan region and the ______ valley are prone to earthquakes.
Name the point where the vibrations originate in 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
