Geology Terms

4. The block of rock that forms on the lower half of a fault
7. The block of rock that forms the upper half of a fault
9. Stress that squeezes rock until it folds or breaks
10. Stress that pushes a mass of a rock in opposite, horizontal directions
11. Waves of energy that travel through the Earth's layers, and are a result of an earthquake, explosion, or a volcano
13. A force that acts on rock to change its shape or volume
15. Seismic waves that move at the greatest velocity
17. Disturbance that travels through space or time usually by the transfer of energy
18. A change in the volume or shape of Earth's crust
19. Center of the Earth made up of mostly nickel and iron
20. Stress that stretches rocks so that it become thinner in the middle

1. Stress that squeezes rock until it folds or breaks
2. Type of fault where the hanging wall slides downwards
3. The shaking that results from the movement of rock beneath Earth's surface
5. The supercontinent that existed 250 million years ago
6. Theory that the continents are slowly drifting
8. Place where liquid metal is found
12. The study of earthquakes
14. Type of fault where rocks on either side move past each other side-ways with a little up-down motion
16. Type of faults where the hanging wall slides up