Across
- 5. the edge where two plates meet
- 7. discontinuity in a volume of rock across where there has been a lot of displacement from rock-mass movements
- 9. edge of Earth's plates meet at this boundary
- 10. when a rock snaps from stress
- 12. formation of new areas of oceanic crust
- 15. where two or more lithospheric plates collide
- 18. rock gets thin as it pulls apart
- 19. linear shaped lowland between mountain ranges created from a geologic rift
Down
- 1. fault along a plate boundary where motion is mostly horizontal
- 2. chain of volcanoes formed above a subducting plate, positioned in an arc shape
- 3. area of Earth's mantle where hot plumes rise upward, forming a volcano on the crust
- 4. idea that continents havee and are still moving slowly across Earth
- 6. The Earth's crust and upper mantle are broken into sections called
- 8. vertical elevation of the Earth's surface in response to natural causes
- 11. theory that pieces of Earth's lithosphere are in constant motion
- 13. surface shaking on Earth from a sudden release of energy in Earth's lithosphere
- 14. oceanic trench area marginal to a continent
- 16. pieces of Earth's crust and uppermost mantle
- 17. two tectonic plates that are MOVING AWAY from each other