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