Question

When a pebble is thrown into a pond, disturbances are produced at the point of interaction and spread oat away
from this point of interaction over the surface of water. In the same manner, waves during earthquake move
outwards from a point on the earth surface.
a) Name these waves and the point on the earth surface.
b) How the intensity of the earthquake vary with the distance from the above mentioned point?
c) What is the point of the origin of earthquake called?
d) Also name the instrument used to find out the source of earthquake?​

Answer 1

Answer:

a) these waves are s waves , the body waves. the point of generation is called focus.

b) the intensity of earthquake goes on decreasing with distance.

c) the point of origin of earthquake is called focus below the earth surface and above earth surface is called epicenter.

d) Seismometer