Across
- 4. Convection (Mantle convection describes the movement of the mantle as it transfers heat from the white-hot core to the brittle lithosphere)
- 7. (the location on the surface of the Earth directly above where the earthquake starts)
- 8. floor spreading (process in which tectonic plates split apart from each other)
- 9. Plate Boundary (occurs when two tectonic plates move past one another)
- 11. Waves (an elastic wave in the earth produced by an earthquake or other means)
- 13. of Plate Tectonic (Earth's outer shell is divided into several plates that glide over the Earth's rocky inner layer above the soft core)
- 15. (a sudden and violent shaking of the ground, sometimes causing great destruction, as a result of movements within the earth's crust or volcanic action.)
- 17. (long, narrow depressions on the seafloor)
Down
- 1. (a planar fracture or discontinuity in a volume of rock across which there has been significant displacement as a result of rock-mass movements)
- 2. Plate Boundary (when two plates come together)
- 3. Push (The newly-formed plates slide sideways off these high areas, pushing the plate in front of them resulting in a _____-____ mechanism)
- 4. (the great size or extent of something)
- 5. (an opening in the Earth's crust through which lava, ash, and gases erupt)
- 6. ridges (a sea floor mountain system formed by plate tectonics)
- 10. (instruments used to record the motion of the ground during an earthquake)
- 12. Plate Boundary (occurs when two tectonic plates move away from each other)
- 14. Pull (The force exerted by the weight of the subducted slab on the plate it is attached to)
- 16. (a concentration or centring of attention on a stimulus)