Across
- 2. the size of an earthquake
- 5. zone of fracture between two blocks of rock
- 6. device mounted structures to reduce mechanical vibrations
- 7. Series of large waves of extremely long periods usually generated by a violent, impulsive under sea disturbance.
- 10. measure of an Earthquakes magnitude
- 12. a period of time between two related actions
- 16. the bowl shaped depression around the orifice of the volcano
- 17. the rigid outer part of the earth
- 18. a force that squeezes something together
Down
- 1. the point on Earth's surface directly above the starting point of an Earthquake
- 3. opening or vents where lava and steam erupt onto the Earth's surface
- 4. nonactive
- 8. extremely hot liquid located under earths surface
- 9. shaking of the surface of the earth
- 11. the magnitude of a quantity per unit area
- 12. Hot molten rock erupted from a volcano
- 13. the point where light rays originating from a point on the object converge
- 14. the third layer of the atmosphere
- 15. the force transmitted through a rope, string or wire when pulled by forces
- 18. the outermost shell of a planet