Across
- 2. solid dense center of our planet that extends from the bottom of the outer core to the center.
- 6. the layer of the earth between the crust and the core.
- 7. zone the process by which collision of the earth's crustal plates results in one plate's being drawn down or overridden by another, localized along the juncture of two plates.
- 10. (of a rock formation) be broken by a fault or faults.
- 14. part of the earths lithosphere that surfaces in the ocean basins, it is primarily composed of mafic rock, sima, rich in iron and magnesium.
- 17. a fault in which rock strata are displaced mainly in a horizontal direction, parallel to the line of the fault.
- 20. magma that flows onto the earths surface.
- 21. the two sub-layers of the earth's crust that move, float, and sometimes fracture and whose interaction causes continental drift, earthquakes, volcanoes, mountains, and oceanic trenches.
- 24. made of iron,stretches from the mantle to the core.
- 25. a broad, domed volcano with gently sloping sides, characteristic of the eruption of fluid, basaltic lava.
- 29. cone volcano a steep conical hill of tephra that accumulates around and downwind from a volcanic vent.
- 30. the outer layer of the Earth.
Down
- 1. under the asthenosphere, is the strong layer layer part of the mantle from the asthenosphere to the core.
- 3. an inclined fault in which the hanging wall appears to have slipped downward relative to the footwall.
- 4. funnel shaped pit around the central vent at a volcano.
- 5. a large volcanic crater, typically one formed by a major eruption leading to the collapse of the mouth of the volcano.
- 8. a stress which stretches rocks into two opposite directions.
- 9. the hot liquid that forms when rock partially or completely melts may include mineral crystals.
- 11. a geological fault in which the upper side appears to have been pushed upward by compression.
- 12. To form bends in (a stratum of rock).
- 13. a conical volcano built up by many layers of hardened lava, tephra, pumice, and volcanic ash.
- 15. spreading a process in which new ocean floor is created as molten material from the earth's mantle rises in margins between plates or ridges and spreads out.
- 16. crack,split, or break in the earths core.
- 18. outermost rigid layer of the earth
- 19. soft layer of the mantle on which pieces of the lithosphere move.
- 22. plates earth major plates, known as plate tectonics also known as continental drift.
- 23. current stream of fluid propelled by thermal convection.
- 26. a mountain or hill, typically conical, having a crater or vent through which lava, rock fragments, hot vapor, and gas are being or have been erupted from the earth's crust.
- 27. boundary a major geologic discontinuity or suture marking the juncture of lithospheric plates that have been joined by plate tectonics.
- 28. core is divided into the outer and inner core, the outer core is liquid and surrounds the inner core.