Across
- 1. hypothesis that states that the continents once formed a single landmass, broke up, and drifted to their present locations
- 4. the process by which new oceanic lithosphere
- 5. the solid, outer layer of Earth that consists of the crust and the rigid upper part of the mantle
- 7. the boundary between tectonic plates that are colliding
- 9. the boundary between tectonic plates that are sliding past each other horizontally
- 10. the study of the alignment of magnetic minerals in rock
Down
- 2. the solid, plastic layer of the mantle beneath the lithosphere
- 3. the boundary between tectonic plates that are moving away from each other
- 6. a long, undersea mountain chain that has a steep, narrow valley at its center
- 8. theory that explains how large pieces of the lithosphere