Earthquake

I learned that An earthquake (also known as a quake,tremor or temblor) is the result of a sudden release of energy in the Earth's crust that creates seismic waves. 

I want to know what are the causes and effects of earthquake.

I appreciate the fact that many precautionary measures are shared to know what we will do before, during and after.

I can apply my learnings through drills and other practices on what we will do when an earthquake occur.