true or false 4. Friction helps in the movement of the rock layers. 5. There should be enough energy needed to overcome the friction for the fault to generate earthquakes. 6. Earthquake is the sudden movement of the ground due to fault movements. 7. A normal faulting occurs when one block of the broken Earth's crust moves upward with respect to the other. 8. When a block of broken crust moves downward, the type of fault present is reverse fault. 9. The type of force present in reverse fault is compression. 10. In strike-slip fault, blocks of the Earth's crust do not slide past each other. 2​