Fact 1: Faulting of rock in Earth 's crust causes earthquakes.

Fact 2: Earthquakes are caused by movements on faults.

Given the two facts above, answer the question "what does fault movement form?" with the following options: 
- sunlight
 - energy barrier
 - coastlines
 - erosion
 - ocean
 - earthquakes
 - tornado
 - mechanical


 

      earthquakes   