Across
- 1. Wind Flow of charged particles from the Sun
- 4. The magnetic field created by Earth
- 7. a metric unit equal to 1,000 meters
- 9. Theory that the crust is made of sections
- 13. What makes something different
- 15. Second layer of Earth
- 17. Rock created from heat and pressure
- 18. Plates moving away from each other
Down
- 2. Changing direction
- 3. Rock created from years of organic material piled up
- 5. Waves an elastic wave in the earth produced by an earthquake
- 6. Rock created from hardened lava
- 8. The study of Earth’s structure and composition
- 10. The middle of Earth
- 11. Outermost layer of the Earth
- 12. Igneous rock created by the cooling of lava
- 14. Measures and charts seismic waves
- 16. A type of igneous silicate rock