| A | B |
|---|
| sediment | a deposit of sand and mineral fragments |
| sedimentary rock | rock formed when sediments are cemented toogether |
| crust | outermost layer of rock |
| core | earth's innermost layer |
| igneous rock | rock that forms from moleten rock. |
| plastic rock | rock that behaves between a liquid and a solid |
| earthquake | a trembling of the earth due to moving masses of rock |
| fault | boundary between moving rock and stationary rock |
| focus | where an earthquake begins |
| epicenter | the point of the earth directly above an earthquake's focus |
| plate tectonics | earth is comprised of several plates |
| Pangea | the theoretic supercontinent |
