Across
- 5. The _____ states that the lithosphere is divided into tectonic plates that slowly move on top of the asthenosphere.
- 6. The ______ is the ductile part of Earth just below the lithosphere.
- 7. Two plates that divide, diverge
- 9. Two plates come together, converge
Down
- 1. When a plate is forced under another plate
- 2. Two plates that slide against each other
- 3. The cool, rigid outermost layer of Earth that is divided into enormous pieces called tectonic plates
- 4. The theory of _____ states that continents were once connected by have drifted apart.
- 8. Vertical movement of fluids that is driven by heat