Across
- 2. The scale to measure an earthquake.
- 4. A series of very big waves.
- 6. The name we give to something that happens because of natural forces.
- 9. Whirlwind with speeds of up to 400km. per hour. Also known as twisters.
Down
- 1. The line where the plates meet.
- 3. The different parts of the crust.
- 5. The outside of the earth.
- 7. The device used to measure an earthquake.
- 8. A sudden movement of the earth.