The term IT MIGHT ROCK YOUR WORLD can be solved by the crossword solution SEISM, which is an abbreviation for Seismology, the scientific study of earthquakes and seismic waves. Seismology is a branch of geophysics that studies the physical properties and processes of earthquakes, seismic waves, and other related phenomena. Seismologists use seismographs to measure and record seismic activity, which can help them understand the structure of the Earth's interior and predict future earthquakes.