Question

Describe in 150 words, the causes and effects of Earthquake.

Answer 1

Answer:

Earthquake can be grouped into three categories based on the depth of their foci that are shallow focus (<70 km depth), intermediate focus (70-300 km depth) and deep focus (>300 km) Geological faults, volcanic activity, landslides, mine blasts and nuclear experiments will caused an earthquake. Strong earthquakes can cause severe damages and great loss of life in several ways, including fault rupture, tremors flood caused by tsunami and landslides. Earthquakes are generated by either tectonic activity, the movement of large rock plates which underlay the earth's surface, or volcanic activity.

Answer 2

When there is sudden movement on the Earth's crust, earthquakes occur. Earthquakes are caused due to sudden lateral or vertical movements in the crust of the Earth. Or we can say that when tectonic plates ride over the other and cause the collision of orogeny or mountain building. The largest faults are formed on the surface of the Earth due to boundaries between moving plates. When there is relative motion between the plates, it is more severe. Circum-Pacific Belt is the most important earthquakes belt which affects several populated coastal regions around the Pacific Ocean like New Zealand, New Guinea, and Japan, etc. It is estimated that the energy about 80% is released in the earthquakes that come from those whose epicentres are in this belt.