Answer:
1.Earth's core
2.But in some cases, the rock on either side of a fault slowly deforms over time due to tectonic forces. Earthquakes are usually caused when underground rock suddenly breaks and there is rapid motion along a fault. This sudden release of energy causes the seismic waves that make the ground shake.
3.the mantle
4.Earth's crust is composed of igneous, metamorphic, and sedimentary rocks
5.An earthquake is caused by the movement of Earth's crustal plates grinding against one another.