Across
- 5. a wave that forms when an ocean disturbance suddenly moves a large volume of water
- 8. zone along the edged of tectonic plates
- 13. to come together with direct impact
- 16. a curved line of volcanoes that forms a parallel boundary
- 18. the rupture and sudden movement of rocks along a break or a crack in Earth's crust
- 19. an area of many fractured pieces of crust along a large fault
- 20. the denser plate sinks under the edge of the less dense plate
- 21. forms when two tectonic plates slide past each other
- 22. sudden and great damage
- 23. coming from different directions and meeting at the same point
- 24. the act of things coming together and having an effect on each other
Down
- 1. to move physically out of position
- 2. to cause to start or happen
- 3. giant, circular, depressions in the ground
- 4. a vent in Earth's crust through which molten rock flows
- 6. a break in Earth's crust along which movement occurs
- 7. the force acting on a surface
- 9. forms where two tectonic plates separate
- 10. height above sea level
- 11. forming a 90-degree angle
- 12. occurring unexpectedly or by chance
- 14. the rapid downhill movement of soil, loose rocks, and boulders
- 15. stress that pulls something apart
- 17. forms where two plates collide
- 25. a long, narrow fissure or opening in rock