Advertisements
Advertisements
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.
कारण सांगा
Advertisements
उत्तर
- The seismic waves can be divided into primary, secondary, and surface waves.
- When energy is released from the Earth's interior, the primary waves are the first to reach the surface.
- Subjected to a ‘P’ wave, particles in the rock move in the direction of waves to and from and therefore, these waves are also called forward-backward waves.
- Thus, during an earthquake, the buildings at the foothills of the Himalayas moved forward and backwards as they were first subjected to “P” waves.
- These movements create tremendous tension in the earth’s crust, and when the tension goes beyond limits, the energy is released in the form of waves, which is the cause of the trembling of the earth’s surface.
shaalaa.com
Earthquake and its causes
या प्रश्नात किंवा उत्तरात काही त्रुटी आहे का?
APPEARS IN
संबंधित प्रश्न
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:
The giant sea waves caused by earthquakes in the oceans are called ___________.
Explain the three types of earthquake waves.
Name the instrument used to record Earthquakes.
What was the cause of the Koyna earthquake in India?
Answer the following:
A volcanic eruption is one of the main causes of earthquakes.
The magnitude of an earthquake is measured by ______.
Choose the odd one
On an outline map of the world, mark the Pacific Ring of Fire
How the earthquake can be recorded?
