My Inquiry- Why do earthquakes happen?

-Earthquakes are usually caused when rocks underground suddenly break along a fault.

-Earthquake-like seismic waves can also be caused by explosions underground.

-During the earthquake the plates or blocks of rocks start moving and they continue to move until they get stuck again.

-After a while, the rocks  break because of the pressure that's built up.

-When the rocks break the earthquake occurs.

-Sometimes you won't be able to feel the earthquake.

-The rocks are pushing against each other but are not moving.

-The concrete breaks when two plates are rubbed against each other and start to stick a little bit.

Research done by Carlynne