Across
- 5. Ocean floor feature found at a divergent boundary, underwater mountain range.
- 6. A flat-topped, submerged inactive volcano.
- 7. Sediment formed from living organisms.
- 9. Settling of sediments out of the water.
- 10. Organic or inorganic particles that accumulate in a loose form.
- 11. Sediment formed from particles dissolved in water.
- 15. Plate boundary in which Earth's plates slide past each other.
- 19. The layer of Earth between the crust and core.
- 22. Sediment formed from particles from space.
- 23. Small, sediment-covered inactive volcano, found on the abyssal plain.
- 28. The hot layer of Earth's upper mantle below the crust.
- 29. Large destructive wave commonly caused by underwater earthquakes.
- 30. Movement of sediments through the action of wind, gravity, and moving water.
- 31. Sediment formed from weathering and erosion of land.
Down
- 1. Deep, narrow valley with very steep sides found at subduction zones.
- 2. Theory that the continents have moved slowly apart over the past 250 million years.
- 3. A vent in the Earth's crust through which lava, steam, and ash are expelled.
- 4. Breakdown of rocks & minerals by ice, water, and heat.
- 8. Occurs when a dense, oceanic plate converges with a less dense continental plate, creates trenches.
- 12. The gentle transition from the slope to the deep sea floor, created by the accumulation of sediments.
- 13. A sudden motion of the Earth's crust resulting from plate movement.
- 14. The greatly sloping transition between the shelf and rise.
- 16. The outermost layer of Earth, top of the lithosphere.
- 17. Name given by Alfred Wegener to the original "supercontinent."
- 18. Vast, flat sediment-covered deep ocean floor.
- 20. Type of current found in the mantle that causes the Earth's plates to move.
- 21. The outermost layer of Earth, rigid layer of the mantle.
- 24. Type of plate boundary in which the Earth's plates divide.
- 25. Type of plate boundary in which the Earth's plates collide.
- 26. Cone-shaped, underwater, volcanic mountain peak.
- 27. The gently sloping submerged portion of a continent, just off land.