Across
- 1. contains Earth’s magnetic field
- 6. the regions of high-energy ions in the magnetosphere
- 9. rocks consisting layers of fragments of other rocks and fossils
- 10. instrument used to record motion of ground during an earthquake
- 12. largest layer of Earth
- 13. change in direction when a ray of light enters a different form of matter
- 14. plate boundary occurring when two plates collide with one another
- 15. volcanic rock that makes up the continental crust
- 17. charged particles flowing toward the Earth from the sun
- 18. the thin top layer of Earth
Down
- 2. the study of earth’s crust
- 3. volcanic rock that has cooled from a molten state
- 4. the separation of Earth’s layers by density
- 5. volcanic rock that makes up the oceanic crust
- 7. equal to 1,000 meters
- 8. waves spread through Earth’s interior from explosions or earthquakes
- 11. an idea that explains the movements of earth’s crust
- 12. rocks produced when high temperatures or pressures alter other rocks
- 14. the middle of the Earth, has two sections
- 16. plate boundary occurring when two plates slide past one another