Across
- 4. Break in a body of rock when one block moves relative to another
- 6. Zone Location where two plates collide and the denser ocean plate descends below the other.
- 7. type of plate boundary - two plates move slide past each other
- 9. Boundary The boundary between tectonic plates that are sliding past each other horizontally.
- 12. _______Drift- the idea that the continents once formed a single landmass, broke up, and drifted to their present locations.
- 15. The boundary between two tectonic plates that are moving away from each other.
- 16. Name for the super continent which contained all the plates together.
- 17. ______ Ridge- Underwater mountain ranges where new seafloor is created at a divergent boundary.
Down
- 1. Openings in Earth's crust from which molten rock, dust, ash, and hot gases flow or erupt
- 2. tectonics The theory that the Earth is broken into plates and are in motion due to convection currents in the asthenosphere (upper mantle).
- 3. The boundary formed by the collision of two tectonic plates.
- 5. sudden, violent movements of the tectonic plates along a boundary
- 8. The thin and solid outermost compositional layer of the Earth above the mantle.
- 10. _____Arc -Formed by two oceanic plates colliding volcanoes to form new land
- 11. type of crust in land, made of granite, less dense
- 13. Extremely deep areas in the ocean that are created by a subducting plate.
- 14. type of crust, ocean floor, made of basalt, more dense