Earthquake: The Land Destruction

What Is An Earthquake?
An Earthquake takes place when two blocks of the earth suddenly slip past one another. The surface they a Fault Place. The location below the earth's surface where the earthquake starts is called the Hypo Center and the location directly above it on the surface of the earth is called the Epicenter.

Sometimes earthquakes has fore shocks. These are smaller earthquakes that happen in the same place before a larger earthquake takes place. The largest main earthquake is called the Main Shock. Main shocks are always followed by aftershocks that occur in the same place and can continue for weeks, months and even years after the main shock.


Causes of Earthquake
The earth has for major layers: The Inner Core, Outer Core, Mantle and Crust.
The Crust and top of the Mantle make up a thin skin on the surface of our planet. But this skin is not all in one piece. It is made up of many pieces covering the surface of the earth. These pieces are called Tectonic Plates and the edge of the plates are called the Plate Boundaries. These pieces keep moving around slowly, sliding past one another and bumping into each other. these plate boundaries are made up of many faults and most earthquakes around the world occur on these faults.

Why does the Earth shakes?
While the edge of the faults are stuck together and the rest of the block is moving. The energy that would normally cause the block to side past one another is being accumulated. When the force of the moving blocks finally overcomes, the friction of the jagged edges of the fault and it breaks free all that stored up energy released.
The Seismic Waves shakes the earth as they move through it and when the wave reach the earth surface, they shakes the ground and anything on it, like our houses and us.


Recent Earthquake
Some earthquakes are not so harmful but some are most destructive. High magnitude earthquake can make big destruction. Such As-
The April 2015 Nepal earthquake killed nearly 9000 peoples and injured nearly 22000. Hundreds of thousands of people were made homeless, with entire villages flattened across many district of the country. It occurred on 25 April with a magnitude of 7.8. Due to this earthquake an avalanche on Mount Everest was triggered which killed 21 peoples. And it was the deadliest day on the mountain in history.


SOME PRECAUTIONS
Earthquake is a natural disaster, we can not stop it. But we can keep some precautions for safety.

1. Be calm, alert and don't panic.
2. Stay away from glass windows and heavy furniture or appliances that may fall.
3. Stay away from trees and structures.
4. Go to the higher ground, Tsunami may occur after the earthquake.
5. If you are inside house, office or any building, execute evacuation plan as instructed.

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