Across
- 5. An Instrument that records seismic waves
- 6. Silicate rock, flows slowly, cools fast
- 8. Very large land mass
- 9. The point on the surface directly above the focus
Down
- 1. A sudden movement of the ground
- 2. A rapture in the earth. Lava, ash, and gases escape
- 3. Plates moving away from each other
- 4. The amount of energy released There is only one.
- 7. The layer of the earth that is cracked to make the tectonic plates