Across
- 2. The rigid outer part of the earth, consisting of the crust and upper mantle.
- 5. The action or process of changing in shape or distorting, especially through the application of pressure.
- 11. A geologic process in which tectonic plates split apart from each other.
- 12. A system of ideas intended to explain something.
- 14. The point on the earth's surface vertically above the hypocenter (or focus), point in the crust where a seismic rupture begins.
- 16. An area on Earth where two or more lithospheric plates collide.
- 18. A planar fracture or discontinuity in a volume of rock across which there has been significant displacement as a result of rock-mass movements.
- 21. Outermost shell of a terrestrial planet.
- 22. A current in a fluid that results from convection.
- 23. 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.
- 24. A linear feature that exists between two tectonic plates that are moving away from each other.
Down
- 1. The process by which the North pole is transformed into a South pole and the South pole becomes a North pole.
- 3. The sideways and downward movement of the edge of a plate of the earth's crust into the mantle beneath another plate.
- 4. A theory explaining the structure of the earth's crust and many associated phenomena as resulting from the interaction of rigid lithospheric plates which move slowly over the underlying mantle.
- 6. The place inside Earth's crust where an earthquake originates.
- 7. Boundary between two tectonic plates, where the plates are moving horizontally or vertically in opposite directions, not against or away from each other.
- 8. What happens to the crustal material on either side of a fault during an earthquake.
- 9. Mostly solid bulk of Earth’s interior.
- 10. The mantle in the region under the lithosphere and the asthenosphere, but above the outer core.
- 13. A fault along a plate boundary where the motion is predominantly horizontal.
- 15. Extremely hot center of Earth, another planet, or a star.
- 17. The upper layer of the earth's mantle, below the lithosphere, in which there is relatively low resistance to plastic flow and convection is thought to occur.
- 19. The movement of continents resulting from the motion of tectonic plates.
- 20. Huge and irregular slabs of rock into which the lithosphere of the earth is broken.