Across
- 3. largest part of earth’s interior.
- 7. plate tectonics pulling away from each other.
- 8. areas far from plate boundaries where heat is nevertheless rising from earth.
- 10. any rock that has cooled from a molten state.
- 12. study of earth’s crust and its history.
- 13. made of fragments of igneous rock of shells of living organisms deposited by wind or water.
- 14. light waves that bend.
- 15. the natural separate of differently dense materials over time due to gravity.
- 16. plate tectonics sliding horizontally alongside each other.
- 17. area where of two plates coming together, forcing one underneath.
- 18. produced by cooling of volcanic lava, made primarily of the element’s silicon, oxygen, iron, aluminum, and magnesium.
Down
- 1. heat escapes from interior through upward flow of warmer material and slow sinking of earth, to a cooler region.
- 2. how slow motions within the mantle of earth move large segments of the crust, resulting in drifting of continents, and other geological features.
- 4. jamming together of plate tectonics.
- 5. a metric unit of length to 1,000 meters.
- 6. produced when high temperature or pressure alters igneous or sedimentary rock physically or chemically.
- 9. regions of high-energy ions in the magnetosphere.
- 11. rocks made of silicon oxygen, makes up continental crust.