Plate Tectonics
Across
- 6. outermost, rigid later of the Earth
- 8. type of volcano also called a composite volcano, which is large and has steep slopes
- 13. the layer between the crust and the core
- 14. liquid layer of the Earth's core
- 16. type of volcano that is the biggest and has large gentle slopes
- 17. simplest type of volcano, conical with low, steep sides and often found on sides of other types of volcanoes
- 18. this is the region around much of the rim of the Pacific cean where many volcanic eruptions and earthquakes occur
- 21. boundary where two tectonic plates move away from each other
- 22. when magma erupts onto the surface it is called this
- 23. mountains created where two or more continental plates are pushed together. The Himalayan mountains are an example.
- 24. a long narrow depression in a surface
- 25. molten rock in the Earth's crust
- 27. the science of the history of the Earth as recorded in rocks
- 28. volcano that buried the ancient town of Pompeii in Italy
- 29. the study of the movement of Earth's crust
- 30. continental transform fault that extends through California
Down
- 1. vibration from underground movement along a fault plane
- 2. type of volcano that is big, round and shaped like a cauldron
- 3. a crack in the Earth's crust through which gases escape
- 4. boundary where two tectonic plates slide by each other
- 5. outermost layer of the Earth
- 7. the movement of the edge of one tectonic plate under another
- 9. region formed where two plates move apart and can be found on land or the bottom of the sea
- 10. process the happens at mid-ocean ridges where new oceanic crust is formed through volcanoes and then gradually moves away from the ridge
- 11. the theory that continents drift apart
- 12. the edges where two plates meet
- 15. a long, underwater ocean ridge created by divergent boundary
- 16. the branch of geology that studies earthquakes
- 19. boundary between two colliding tectonic plates
- 20. a break or crack in the Earth's surface
- 26. soft later of the mantle