Why Earthquakes Happen?[malayalam]

Enthukondanu earthquakes athava bhookambam undakunnath? Dhurantham undakum munbe bookambangal pravachichukoode? Bhookambangal undakumbol shraddhikenda karyangal enthokkeyanu? Bhookambathinte pinnile shastravum rasakaramaya kadhakalum kelkaam ee showiloode.