Across
- 2. boundary, where plates slip past each other
- 5. the sinking movement of ocean floor back into the mantle
- 6. spreading, molten rock flows through a crack in Earth's crust and hardens into solid strips on both sides of the crack
- 9. cyclical movement of fluids or gases due to temperature differences
- 10. an idea that can be tested by experimentation
- 11. boundary, where plates move together
- 13. crust, this crust is more dense
Down
- 1. refers to Earth's crust and the large scale processes that occur within it
- 3. ridge, long zipper like chains of undersea mountains
- 4. ideas that are supported by a vast diverse array of evidence
- 7. of Fire, places along the edges of the Pacific Plate where there are many volcanic eruptions and earthquakes
- 8. boundary, where plates move apart where seafloor spreading occurs
- 9. crust, this crust is less dense
- 12. trenches, undersea valleys that are the deepest part of the ocean