Across
- 3. fine particles ejected by volcano
- 6. molten rock
- 8. light, strong metal with high melting point
- 9. small, unmanned aircraft
- 10. advance notice of something; cautionary advice
Down
- 1. rupture in the Earth's crust allowing escape of lava, ash and gas
- 2. instrument to measure the tilt of the ground
- 4. thermal energy
- 5. light porous volcanic rock
- 7. central tube of volcano