Across
- 3. the oceanic lithosphere is recycled into the Earth's mantle at convergent boundaries.
- 5. Interestingly, the magnetic field may sometimes only undergo an 'excursion', rather than a reversal.
- 7. The mesosphere is the third layer of the atmosphere,
- 10. the mid-oceanic ridge where a divergent boundary is causing two plates to move away from one another resulting in spreading of the sea floor.
- 12. Crust is the outermost layer
- 13. When you think really hard about something
- 14. asthenosphere is the denser, weaker layer beneath the lithospheric mantle.
- 18. the action or process of changing in shape or distorting, especially through the application of pressure.
- 19. a fault is a planar fracture or discontinuity in a volume of rock across which there has been significant displacement as a result of rock-mass movements.
- 20. a current in a fluid that turns into a convection.
- 21. tectonics is the generally accepted scientific theory that considers the Earth's lithosphere to comprise a number of large tectonic plates which have been slowly moving since about 3.4 billion years ago.
- 22. A transform fault or transform boundary, sometimes called a strike-slip boundary, is a fault along a plate boundary where the motion is predominantly horizontal. are created as a result of Earth's subterranean movements.
- 23. It's an ideal of something and a guess about it
Down
- 1. continents have moved over geologic time relative to each other, thus appearing to have "drifted" across the ocean
- 2. Earth's outer shell is divided into large slabs of solid rock, called “plates,” that glide over Earth's mantle
- 4. It a ball inside of the earth called the core and it under the crust and mantle.
- 6. the point on the earth's surface vertically above the focus of an earthquake.
- 8. material that returns to its original shape after being deformed
- 9. a sudden and violent shaking of the ground, sometimes causing great destruction, as a result of movements within the earth's crust or volcanic action.
- 11. It is the solid, outer part of Earth. The lithosphere includes the brittle upper portion of the mantle and the crust, the outermost layers of Earth's structure.
- 15. Elastic rebound is what happens to the crustal material on either side of a fault during an earthquake. The idea is that a fault is stuck until the strain accumulated in the rock on either side of the fault has overcome the friction making it stick.
- 16. In plate tectonics, a divergent boundary or divergent plate boundary is a linear feature that exists between two tectonic plates that are moving away from
- 17. Mantles are made of rock or ices, and are generally the largest and most massive layer