Across
- 2. forces, The energy or the movements that cause a change in the earth's crust.
- 6. one of trees kinds of tectonic boudaries.
- 7. force, The upward force a fluid exerts on an object.
- 10. instrument that measures earthquake waves.
- 12. the scientific study of earthquakes and volanic eruptions
- 13. The seismic waves that shake the ground back and forth.
- 14. Is the distortion of a material under stress.
- 15. boundaries, When two plates come together.
- 16. which propagate through the earth and cause the groungh surface to shake.
- 18. the plate of the planet reponsible for causing earthquakes.
- 20. scale, measuring the magnitude of an earthquake logarithmic.
Down
- 1. Any kind of shaking .
- 3. Occurs when the plates are pushed toward each other causing them to crash.
- 4. Cracks in the crust where there is no movement.
- 5. mantle, Rock slowly pushes up against section of the oceanic plates.
- 8. boudaries, Places where plates slide sideways past each other's.
- 9. a directed stress that pulls rock appart in opposite directions.
- 11. strongest shaking happens at epicentre.
- 17. earth's thickest layer made hot rock.
- 19. A force exerted inside a material.