Across
- 3. ___________ is caused by dry conditions.
- 5. Building collapses during an _________.
- 6. Tidal waves is another word for ________.
Down
- 1. People who study earthquakes.
- 2. __________ are rolling waves which rush towards the seashore.
- 4. The earth's upper layer, the crust, is made of large and small ____.
- 7. The layers under the plates are constantly ___________.