Across
- 6. a solid chemical compound that combines to create rocks
- 8. the study of the earth
- 9. the boundary when two plates slide past each other
- 11. scientist which hypothesized the continental drift theory
- 12. Planets made of hydrogen and helium, second most massive
Down
- 1. preserved remains of once-living things
- 2. when water vapor turns into liquid water
- 3. process of sediment stopping after being transported
- 4. currents that move hot material up and cold material down
- 5. the phases of moon which show more light
- 7. the day-to-day description of the environment
- 10. melted rock inside of a volcano