Switch to Twig Science to check out our NGSS product.
An earthquake is a sudden phenomenon.
Seismologists – geologists who study earthquakes – have no way of knowing exactly when or where the next one will hit.
Earthquakes occur along fault lines – cracks in the Earth's crust caused by shifting tectonic plates.
Many of these have been mapped across the world.
But …
Please log in to view and download the complete transcript.