Across
- 4. Above ground magma
- 5. explosions of lava
- 6. ripples, ridges, and hollows moving over the water
- 7. the action of when one tectonic plate moves underneath another
Down
- 1. a long, high sea wave caused by an earthquake or other disturbance
- 2. underground lava
- 3. when two plates come together
- 8. occurs when two tectonic plates move away from each other