Across
- 2. Tectonic activities occur mostly along the plate _________
- 3. Forces which originate from within the earth
- 5. An opening in the volcano in the form of a long crack
- 6. The place of origin of the earthquake
- 8. The shaking of the earth's surface
- 10. These spread out as concentric waves during an earthquake
- 11. Forces which originate on the surface of the earth
- 13. These are called living volcanoes
- 15. The intensity of the earthquake waves is measured on this
Down
- 1. These waves are the first to arrive during an earthquake
- 4. The place where the maximum intensity of the earthquake is felt
- 7. This states the idea of sea-floor spreading
- 9. The earth's crust has this many minor plates
- 12. A funnel shaped hollow at the top of the cone of a volcano
- 14. These volcanoes have become quiet after erupting