Answer:d. Ground waves
Explanation:A P-wave is one of the two main types of seismic waves. P-waves travel faster than other seismic waves and hence are the first signal from an earthquake to arrive at any affected location or at a seismograph
Answer:
The correct options are A and C.
Explanation :
When there is a sudden release of energy due to earthquake or any type of explosion inside the earth, then this energy is transferred in the form of waves called Seismic Waves.
Seismograph helps us to measure these waves. These seismic waves can be categorized as Body Waves and Surface Wave.
Body Waves propagate inside the earth in all directions, and are further classified as Primary Waves (P-Waves) and Secondary Waves (S-Waves).The Surface Waves move along the earth’s surface, like the ripples on water surface.
