Science Unit 3 Vocabulary
Across
- 4. the movement of a fluid, caused by differences in temperature, that transfers heat from one part of the fluid to another
- 6. A plate boundary where two plates move toward each other
- 9. The shaking that results from the movement of rock beneath Earth's surface
- 10. the region where two tectonic plates are in contact
- 11. thinner, more dense, younger crust making ocean floor
- 15. A plate boundary where two plates move away from each other
- 16. a valley formed by the separation of tectonic plates
- 17. The preserved remains or traces of an organism that lived in the past
- 18. The process that creates new sea floor as plates move away from each other at the mid-ocean ridges
- 19. The region where oceanic plates sink down into the asthenosphere
- 20. A solid, thin outermost layer of Earth
Down
- 1. The hypothesis that states that the continents once formed a single landmass, broke up, and drifted to their present location
- 2. a seafloor mountain system formed by plate tectonics
- 3. The layer of hot, solid material between Earth's crust and core
- 5. The soft layer of the mantle on which the lithosphere floats
- 7. The theory that pieces of Earth's lithosphere are in constant motion, driven by convection currents in the mantle
- 8. A supercontinent containing all of Earth's land that existed about 225 million years ago
- 12. The strong, lower part of the mantle between the asthenosphere and the outer core
- 13. A rigid layer made up of the uppermost part of the mantle and the crust.
- 14. A plate boundary where two plates move past each other in opposite directions