What are the 2 types of seismic wave produced during an earthquake?
P - waves (Primary) and S - Waves (Secondary)
P-waves are longitudinal waves that travel at the speed of sound and are twice as fast as S-waves. They travel at different speeds through solids and liquids
S-waves are transverse waves that are not able to travel through liquids
When seismic waves are produced, the difference in time between the arrival of P-waves and S-waves at different detectors provides evidence about the location of the earthquake and the material they have travelled through
