Across
- 5. A huge bowl-shapeed depression formed when an empty magma chamber collapses after volcanic eruption
- 10. Fluid lava surges from vent like water from a fountain (eruption)
- 11. The point underground, where an earthquake begins
- 12. Volcano formed when an eruption composed mostly of tephra buildup cone-shaped mountains
- 17. A volcano that has not erupted and recorded history or is unlikely to ever erupt again
- 22. The banner between the crust and the mantle
- 23. The place at ground level that is directly above the focus of the earthquake
- 24. A vent that allows molten rock an hot gases to escape from within the earth
- 25. A break that appears at the boundary between two moving masses of rock
- 28. Hot clouds of gas and dust are expelled high into the air, usually quite violently (eruption)
- 30. A volcano that has erupted recently or is considered likely to erupt in the future
- 33. The most region of the Earth
- 34. An enormous wave that can be caused by an earthquake
- 35. The region of the Earth were most of the worlds earthquakes occur
- 36. An opening in the ground through which a volcano erupts
- 37. A volcano that erupted many years ago and although now inactive may erupt again
- 39. The scale used to measure the strength of an earthquake
Down
- 1. Volcano formed in large amounts of fluid running lava, gradually build up a dome-shaped mound
- 2. Holes or cracks that serve as escape vents for underground gases
- 3. Fragments of volcanic rock that formed when thick magma explodes into pieces as it leaves the volcano
- 4. Molten rock after it reaches the Earth surface
- 6. A depression at the top of a volcano
- 7. A scientist who studies the structure of the earth
- 8. The strength of an earthquake
- 9. A zone of volcanoes that in circles, the edge of the Pacific Ocean
- 13. Volcano formed when altering layers of fluid lava, and tephra build up a steep symmetrical mountain often with a small crater at the top
- 14. Natural acid slow slowly, eat into a rock and break it apart
- 15. The study of the Earth and a structure
- 16. Globes of hot lava are flung into the air, where they harden into volcanic bombs in a series of noisy but mild eruptions
- 18. Any trembling or shaking of the earths crust
- 19. The smallest fragments of Tera resembles dust or fine sand
- 20. A process that causes rocks to gradually break and crumble into smaller pieces
- 21. Underground melted rock
- 26. A large reservoir located a few miles beneath the Earth surface containing magma
- 27. An underwater mountain range in the ocean, where a plates of the earths crust are moving away from each other
- 29. Fragments of Tafra that are smaller than bombs and blocks, but larger than volcanic ash, Means “ Little stones”
- 31. Physical forces, such as flowing water, ice and wind blown sand break down the rock
- 32. the outermost layer of the Earth
- 35. The study of earthquakes
- 38. The middle layer of the Earth