Across
- 3. this means land
- 6. this boundaries plates slide past each other.
- 7. There Are 7 of these.
- 11. the rigid outer part of the earth
- 12. when two plates move away from eachother
Down
- 1. a supercontinent that existed about 175 million years ago
- 2. this means water
- 4. the outermost layer of rock of which a planet consists
- 5. the upper layer of the earth's mantle
- 8. This German scientist created the theory of continental drift.
- 9. boundary these boundaries plates slide beneath one another.
- 10. the hypothesis that the Earth's continents have moved over geologic time relative to each other