Name the two belts where most of the earthquakes occur.

Describe how earthquakes are caused on the surface of the earth.

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.

Explain the three types of earthquake waves.