Plate Tectonics
Across
- 2. Earth's _____ is broken into about 19 pieces.
- 3. Continents used to look like a giant _____ ____.
- 5. Tectonic plates have different size, ____, and thickness
- 7. A break in a body of rock along which one block slides relative to another.
- 9. The bending of rock layers due to stress.
- 11. A more dense oceanic plate slides under a less dense continental plate
- 12. Two plates that slide past each other
- 16. 300 million years ago all of the continents were combined into one super-continent called _____
- 17. PT.2 and _______ per year.
- 19. Who discovered the theory of continental drfit
Down
- 1. Process where new oceanic lithosphere forms as magma rises toward the surface and hardens
- 2. Formed by the collision of two lithospheric plates, EX: Himalaya Mountains
- 4. Which boundary moves in this direction ← →
- 6. Zones of geologic activity at the surface of Earth
- 8. The _______ (crust and asthenosphere) is cracked and divided into tectonic plates.
- 10. Submerged mountain range extended from the Arctic Ocean to beyond the southern tip of Africa. One of the better known Divergent Boundaries
- 13. The flow that transfers heat within a fluid
- 14. PT.1 Tectonic plates move around Earth's surface at rates of ______
- 15. Vibrations created by an earthquake.
- 18. The core is made up of mostly ____