Across
- 3. a vent on the earths surface where magma and gases are expelled
- 5. boundary between two colliding plates - keywords: ocean trench
- 8. an underwater chain of mountains.
- 9. a theory proposed by Alfred Wegener that explains how large pieces of land called plates move and change shape of the earth.
- 10. the process by which Earth's crust breaks apart
Down
- 1. a boundary where two plates are moving apart - hint: create new crust
- 2. creates midocean ridges, earthquakes, and volcanic activity
- 4. boundary between two plates that are sliding past each other
- 6. the solid, outer layer of the earth that consists of the crust and the upper part of the mantle
- 7. when one tectonic plates dives under another