Information and images of earthquakes?
Answers
A disaster is a sudden, calamitous event that seriously disrupts the functioning of a community or society and causes human, material, and economic or environmental losses that exceed the community’s or society’s ability to cope using its own resources.
major types of disaster
like floods , drought , lanslides , tsunami and earthquakes
earthquake
An earthquake (or quakes, tremors) is shaking of the surface of earth, caused by sudden movement in the Earth's crust. They can be extremely violent
Earthquakes are usually quite brief, but may repeat.An earthquake under the ocean can cause a tsunami.
causes of earthquake
Earthquakes are caused by tectonic movements in the Earth's crust. The main cause is that when tectonic plates collide, one rides over the other, causing orogeny (mountain building), earthquakes and volcanoes.
The boundaries between moving plates form the largest fault surfaces on Earth. When they stick, relative motion between the plates leads to increasing stress. This continues until the stress rises and breaks, suddenly allowing sliding over the locked portion of the fault, releasing the stored energy as shock waves.
how to measure earthquake
The Richter Scale provides a measure of the magnitude of the earthquake
precautions during earthquake
• Drop down; take cover under a desk or table and hold on.
• Stay indoors until the shaking stops and you're sure it's safe to exit.
• Stay away from bookcases or furniture that can fall on you.
• Stay away from windows. In a high-rise building, expect the fire alarms and sprinklers to go off during a quake.
• If you are in bed, hold on and stay there, protecting your head with a pillow.
• If you are outdoors, find a clear spot away from buildings, trees, and power lines. Drop to the ground.
• If you are in a car, slow down and drive to a clear place. Stay in the car until the shaking stops.
we have to prepare for after shocks also .....
