Across
- 1. produced by the cooling of volcanic lava
- 6. plate boundary where two plates move towards each other
- 7. high energy ions in the magnetosphere
- 8. top layer of earth is called
- 14. when hot molten rock solidifies
- 15. igneous rock consisting mainly of quartz
- 16. heat transferred by movement of a heated fluid such as air or water
- 17. a metric unit of length equal to 1000 meters
- 18. planets begin to melt, the materials begin to separate from each other
Down
- 2. plate boundary where two plates move past each other in opposite directions
- 3. large plume of hot mantle material rising from deep within earth
- 4. the study of earths physical structure and substance
- 5. waves that spread through the interior of Earth from earthquakes
- 9. flows outward from the hot surface of the sun
- 10. plate boundary where two plates move away from each other
- 11. used to record the motion of the ground during an earthquake
- 12. changed into a new form due to heat and pressure
- 13. formed by preexisting rocks