Across
- 4. - Type of plate boundary where plates move apart.
- 5. - The process where one plate is forced under another plate.
- 7. - Deep, narrow depressions in the ocean floor formed by subduction.
- 9. - Molten rock beneath the Earth's surface.
- 10. - Type of plate boundary where plates slide past each other.
Down
- 1. - A semi-fluid layer beneath the lithosphere that allows plates to move.
- 2. - Type of plate boundary where plates collide.
- 3. - The rigid outer layer of the Earth, including the crust and upper mantle.
- 6. tectonics - The theory that explains the movement of Earth's plates.
- 8. of fire - A major area in the Pacific Ocean where many volcanoes are located.