Across
- 3. the boundary between two plates that move away from each other.
- 5. the process by which atoms form a solid with an orderly, repeating
- 8. magma that erupts onto Earth's surface.
- 9. a round depression formed on the surface of a planet, moon, or other space object by the impact of a meteorite.
- 15. cycle the series of processes that change one type of rock into another type of rock.
- 16. the process by which new oceanic crust forms along a mid-ocean ridge and older oceanic crust moves away from the ridge.
- 18. a naturally occurring, inorganic solid that has a crystal structure and a definite chemical composition.
- 21. the process through which sediment turns into rock.
- 22. the boundary between two plates that move toward each other.
- 24. rock igneous rock that forms as magma cools underground.
- 25. the process that occurs when one tectonicplate moves under another tectonic plate.
- 26. a naturally occurring solid composed of minerals, rock fragments, and sometimes other materials such as organic matter.
- 28. the laying down or settling of eroded material.
- 29. the moving of weathered material, or sediment, from one location to another.
- 30. Wegener’s hypothesis that all continents were once connected in a single large landmass that broke apart about 200 million years ago and drifted slowly to their current positions.
- 31. a large mass of ice, formed by snow accumulation on land, that moves slowly across Earth’s surface.
- 32. rapid, downhill movement of soil, loose rocks, and boulders.
- 33. an area of many fractured pieces of crust along a large fault.
Down
- 1. the mechanical and chemical processes that change Earth’s surface over time.
- 2. the boundary between two plates that slide past each other.
- 4. vibrations caused by the rupture and sudden movement of rocks along a break or a crack in Earth’s crust.
- 6. name given to a supercontinent that began to break apart approximately 200 million years ago.
- 7. a process in which minerals dissolved in water crystallize between sediment grains.
- 10. a wave that forms when an ocean disturbance suddenly moves a large volume of water.
- 11. theory that Earth’s surface is broken into large, rigid pieces that move with respect to each other.
- 12. a curved line of volcanoes that forms parallel to a plate boundary.
- 13. a vent in Earth's crust through which molten rock flows.
- 14. long, narrow mountain range on the ocean floor; formed by magma at divergent plate boundaries.
- 17. molten rock stored below Earth's surface.
- 19. rock igneous rock that forms when volcanic material erupts, cools, and crystallizes on Earth’s surface.
- 20. a deep, underwater trough created by one plate subducting under another plate at a convergent plate boundary.
- 23. a crack or a fracture in Earth’s lithosphere along which movement occurs.
- 27. a process in which the weight from the layers of sediment forces out fluids and decreases the space between sediment grains.