Seismic waves are the waves generated by an earthquake.
Epicenter is the place on the ground surface that is perpendicular to the hypocenter which records the first quake.
Hypocenter is the place of origin of an earthquake which is always hidden inside the earth at the depth of 20 km to 700 km.
Richer scale is the scale that measures the magnitude or intensity of energy released by an earthquake.
The word 'Tsunami' in Japanese mean 'harbor wave' that refers to a series of large ocean waves that hits the shoreline.
A tsunami is a large ocean ware that is caused by sudden motion on the ocean floor.
Earthquake is the sudden shaking of ground due to the breaking and movement of large sections (tectonic rocks) in the crust of the earth.
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