What is the cause of an Earthquake?

Are the North State's recent earthquakes cause for concern? | NSPR

a
The explosions of flammable gases trapped in pockets under the ground causes the vibrations that create earthquakes
b
Two or more plate boundaries move against each other, producing vibrations and energy waves that travel to the surface
c
Large impacts of asteroids and meteors into the sea crash into the crust, sending shockwaves that are felt as earthquakes across the globe
d
Volcanic eruptions shake the ground around them while the erupt, causing the effect of earthquakes in the regions around them

1 answer

The correct answer to the cause of an earthquake is:

b Two or more plate boundaries move against each other, producing vibrations and energy waves that travel to the surface.

Earthquakes are primarily caused by the movement of tectonic plates in the Earth’s crust, which can create stress along fault lines. When the stress exceeds the strength of the rocks, it results in a sudden release of energy, causing seismic waves that we feel as an earthquake.