Plate Tectonics
Across
- 2. A deep valley that forms where two plates move apart; forms at a divergent boundary on Earth's surface
- 4. the name of the single, ancient, large landmass that broke apart 200 million years ago and gave rise to today's continents
- 9. the process by which one lithospheric plate moves beneath another plate as a result of tectonic forces
- 11. an area where magma from deep within the mantle melts through the crust above it
- 12. the boundary between tectonic plates that are colliding
- 13. a break in the earth's crust; forms at transform boundary
- 14. an undersea mountain chain where new ocean floor is produced; forms at an underwater divergent plate boundary
Down
- 1. the boundary between two tectonic plates that are moving away from each other
- 3. the boundary between tectonic plates that are sliding past each other horizontally
- 5. the solid, outer layer of Earth that consists of the crust and the rigid upper part of the mantle
- 6. a narrow, deep trough parallel to the edge of a continent or island arc where subduction is taking place
- 7. a string of volcanoes that form as the result of subduction of one oceanic plate beneath a second oceanic plate; forms at a convergent with subduction plate boundary
- 8. a mountain that forms when rock layers are squeezed together and uplifted; forms at a convergent boundary
- 10. the process by which new oceanic lithosphere (seafloor) forms when magma rises to Earth's surface at mid-ocean ridges and solidifies, as older, existing seafloor moves away from the ridge