Question

Earthquakes happen when _____.

magma fills the chamber in a mountain
seismic waves are transferred from the ocean floor to ocean water
tectonic plates suddenly move past one another
rocks are broken down and transported from one place to another

Answer 1

Earthquakes are usually caused when rock underground suddenly breaks along a fault. This sudden release of energy causes the seismic waves that make the ground shake. When two blocks of rock or two plates are rubbing against each other, they stick a little.

Answer 2

it would be C.