Across
- 2. Boundary between tectonic plates that are sliding past each other horizontally
- 7. Continents once formed a single landmass, broke up and drifted to present
- 9. Solid outer layer of earth that consists of crust and rigid upper part of the mantle
- 10. Process by which continents form and break apart over millions of years
Down
- 1. Boundary between tectonic plates that are moving away from each other
- 3. Super continent that formed 300 million years ago and began to break 250 million years ago
- 4. Solid plastic layer of the mantle beneath the lithosphere
- 5. Theory that explains how and why plates move and change shape
- 6. Process when earths crust breaks apart
- 8. Boundary between tectonic plates that are colliding