Advertisements
Advertisements
प्रश्न
Name two man-made causes of an earthquake.
Advertisements
उत्तर
- Construction of huge dams: The weight of large reservoirs can trigger earthquakes in seismically active zones.
- Mining and blasting of rocks: Explosions and excavation near fault lines can induce earthquakes.
APPEARS IN
संबंधित प्रश्न
Identify and name the internal movement.
Molten magma is thrown out of the earth’s mantle.
Give reasons why an earthquake occurs.
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?
What is an Earthquake?
Name the important Earthquake-belts of the world.
OR
Indicate two major belts of Earthquakes.
What was the cause of the Koyna earthquake in India?
Give one word for the following :
The surface position immediately above the origin of an earthquake.
Give reasons for the following:
Internal processes are different from external processes.
Choose the odd one
On an outline map of the world, mark the Pacific Ring of Fire
The earthquake is measured by the ______ scale.
An earthquake of magnitude ______ scale can cause damage from things falling.
Name the point where the vibrations originate in an earthquake.
Choose the odd one.
focus, epicenter, vent, seismic waves
