Across
- 4. A supercontinent containing all of Earth's land that existed about 225 million years ago.
- 5. two tectonic plates move away from one another and allows the asthenosphere to move to the Earth's surface creating new lithosphere
- 8. Collision of tectonic plates, they push against each other, and the denser plate sinks.
- 9. The lower, more dense part of the mantle
- 12. large tectonic moving pieces of the lithosphere
- 14. Earth's thick middle compositional layer just below the crust
- 18. the process by which new sea floor forms, where new rock forms
- 19. fold is a stack of originally planar surfaces, such as sedimentary strata, that are bent or curved during permanent deformation
- 21. the center of the Earth, made of dense elements, divided into inner and outer sections
- 22. two tectonic plate that move past each other horizontally in opposite directions, slowly scraping and building energy
- 23. the hypothesis that today's continents were once part of a single landmass
Down
- 1. a theory that states Earth's surface is made up of giant, moving slabs called tectonic plates
- 2. the process by which one tectonic plate is pulled beneath another plate
- 3. a change of the magnetic poles resulting in a pattern that provides evidence for seafloor spreading and plate tectonics.
- 6. the bending, tilting, and breaking of Rock due to stress
- 7. a current caused by the rising of heated fluid and sinking of cooled fluid
- 10. Energy released by earthquakes that travel through rocks outward
- 11. Stress that squeezes rock until it folds or breaks
- 13. The Earth's shell-like thin compositional layer
- 15. The soft layer of the mantle on which the tectonic plates move
- 16. the outermost physical layer of Earth
- 17. a break in Earth's crust along which blocks of rock move
- 20. Stress that stretches rock so that it becomes thinner in the middle and eventually breaks