Q10
The transverse, longitudinal and surface waves in an earthquake originate from ________
A.
The focus within the body of the earth
AnswerB.
The focus on the surface of the earth
C.
The epicentre on the surface of the earth
D.
The epicentre within the body of the earth
Answer: Option A
Solution
Answer: Option A
Solution:
The transverse, longitudinal and surface waves in an earthquake originate from the focus within the body of the earth.The epicenter of an earthquake sends out waves which are like an object dropped on to a still body of water that sends out ripples. After the stone hits the water ripples move outwards from the centre in every direction. An earthquake releases energy as shock waves, the so-called seismic waves, which ripple across the earth's surface.