Across
- 4. PEOPLE WHO STUDY EARTHQUAKES
- 5. WHEN LAVA IS BELOW THE EARTH'S SURFACE
Down
- 1. THE EARTH'S UPPER LAYER
- 2. AN OPENING ON THE EARTH'S SURFACE,WHICH ALLOWS HOT,MOLTEN ROCK,ASH AND GASES TO ESCAPE FROM BELOW THE SURFACE
- 3. TIDAL OR STORM WAVES