Across
- 6. __ is the theory that Earth's outer crust has several plates that glide over the upper mantle (no space between the two words).
- 7. When two oceanic plates spread apart at a _ boundary, magma creates new crust to form a mid-ocean ridge.
- 8. The layer of the Earth in which convection currents occur.
- 9. _ rocks are found closer to ocean ridges, and old rocks are further away.
- 10. When plates collide, the more _ plate subducts under the less dense plate.
Down
- 1. _ can create islands.
- 2. A __ is formed when two continental plates diverge (no space between the two words).
- 3. _ is when a more dense plate "dives" below a less dense plate.
- 4. Which plate boundary are mountains & ocean trenches most likely to form?
- 5. __ are landforms that can be created from transform boundaries (no space between the two words).