Question

path travelled by earthquake waves helps in determining composition of earth

Answer 1

There are about 100 to 200 earthquakes each year that are large enough (about M 6) to be recorded by seismographs around the globe. These large quakes provide the means to “see” into our planet and have been the source of much of the data that allow us to more fully understand Earth’s interior

Answer 2

Seismic waves (Earth quakes) are playing a major role in finding the structure of Earth’s interior. Seismic waves travels in different speed in different materials. This property of seismic waves probably tell a lot about the earth’s interior.

There are only two type of earth quakes that occurs in Earth they are

• P-waves also known as pressure that goes through liquid and solid.
• S-waves also known as secondary waves that only goes through the solid.