Across
- 2. an igneous rock that is granular and crystalline
- 4. an instrument that measures earthquakes
- 7. when the solar wind gets caught in the magnetic field, these are formed
- 8. a unit of measurement that is equal to 1000 meters
- 11. rock formed from buildup and cementing
- 13. the center of Earth
- 16. the melting and separation of materials
- 17. rock formed by physical and chemical alteration
- 18. charged particles coming from the sun
Down
- 1. the magnetic field around a planet
- 3. a grainy volcanic rock that appears in pillars
- 5. a wave in the earth produced by earthquakes
- 6. the motion of Earth’s plates over the mantle
- 9. when light changes direction at an angle
- 10. the outer layer of the Earth
- 12. rock formed from a molten state
- 14. the study of Earth
- 15. the middle layer of the Earth