Across
- 3. portion of Earth's crust that lies beneath ocean waters
- 4. the edges of tectonic plates. There are three types of them.
- 8. When plates move away from each other, the space between them gets filled with material, which rises to the surface, cools and forms mid-oceanic ridges.
- 9. The thin and solid outermost layer of the Earth above the mantle
- 10. a long narrow hilltop, mountain range, or watershed
Down
- 1. the rigid outer part of the earth, consisting of the crust and upper mantle
- 2. an opening in the Earth's crust through which molten lava, ash, and gases are ejected.
- 5. Shaking and vibration at the surface of the earth resulting from underground movement along a fault plane of from volcanic activity
- 6. A molten mixture of rock-forming substances, gases, and water from the mantle
- 7. the layer of the earth between the crust and the core