Geography
Answer
The three types of earthquake waves are-
P or Primary wave — These are the first earthquake waves to be recorded on a seismogram of an earthquake. They are compressional,i.e., the particles vibrate in the direction of movement of the wave. They can pass through solids, liquids and gases.
S or Secondary wave — These waves are recorded on a seismogram after the P waves. They are distortional waves in which the particles vibrate at right angles to the direction of movement of the wave. S waves travel through the earth's interior but cannot be transmitted by liquids.
L or Surface waves — These waves travel along the surface of the earth and are recorded after the P and S waves. Two types of L waves are identified- Love waves and Rayleigh waves.
Related Questions
What is the difference between seismic focus and epicentre?
The destructive effects of an earthquake are far more than its constructive effects. Give reasons to support your answer.
Give a geographical reason for each of the following:
(i) Most earthquakes occur on account of plate movements.
(ii) Primary waves are the first earthquake waves to be recorded on a seismogram.
(iii) Volcanic activity and earthquakes occur in the same belt.
How is the intensity of an earthquake measured?