Across
- 5. Spreading Process where new oceanic crust forms at mid-ocean ridges
- 6. Rift Zone where continental crust is being pulled apart
- 11. of Fire Pacific basin area with frequent earthquakes and volcanoes
- 12. Massive layer of hot rock between the crust and core
- 13. Zone Site where a dense oceanic plate sinks beneath another
- 14. Crust Thick, buoyant, old part of the crust forming landmasses
- 15. Lava Dark, thin, low-viscosity volcanic rock that flows easily
- 16. Boundary Tectonic border where two plates move away from each other
- 17. Tectonics Theory that Earth's outer shell is divided into gliding plates
Down
- 1. Lava Light-colored, high-silica lava that is thick and traps gas
- 2. Crust Thin, dense part of the crust underlying ocean basins
- 3. Boundary Tectonic border where plates slide horizontally past each other
- 4. Boundary Tectonic border where two plates collide
- 6. Drift Hypothesis that continents were once a single landmass
- 7. Shaking caused by a sudden release of energy along a fault
- 8. Opening in the crust through which molten rock and gas escape
- 9. Rigid outer shell consisting of the crust and top mantle
- 10. A measure of a fluid’s resistance to flow