PLATE TECTONIC AND CONTINENTAL DRIFT
Across
- 2. this is a large wave caused by earthquakes
- 7. plate tectonics helps in finding the age of ____ floors.
- 8. the thickest layer of the earth
- 9. Alfred Wegner believed that all the continents fitted together like....
- 14. the most important evidence that supports the plate tectonic theory.
- 16. the oceanic crust on the other hand is made up of _____ rock.
- 17. a slowly moving mass or river of ice formed by the accumulation and compaction of snow on mountains or near the poles
- 18. where all the continents spread apart.
- 21. when two plate comes together
- 22. the biggest body of water available
- 24. the theory of plate tectonics identifies how many major types of lithospheric plates .
- 25. this happens when the earth crust buckles in a wavelike pattern, creating holls or mountain
- 28. evidence of dead plants and animal
- 29. how many plate boundaries are there
- 30. when tectonic plates slide past each other horizontally along strike-slipe faults or transform faults ____ boundaries are created.
- 34. device used to record an earthquake seismic wave
- 37. along diverging margin ______ are prevalent.
- 39. when two plate move apart
- 40. the theory of plate tectonics identifies how many minor types of lithospheric plates
Down
- 1. the most active example of continental convergent plate boundaries is the _____ mountain
- 3. the continental crust is made up of which rock.
- 4. a natural stream of water flowing in a channel to the sea, a lake or another such stream
- 5. he came up with the idea of continental drift
- 6. a large natural elevation of the earths surface rising abruptly from the surrounding level: a large steep hill
- 10. the upper layer of the earths mantle.
- 11. in the process of subduction on the oceanic plate is driven down into the
- 12. another word for lava
- 13. the term plate was first coined by
- 15. when the continents were all hooked together.
- 19. the mid Atlantic ridges are a good example of a ______ boundary.
- 20. the reason due to which earths plates are moving
- 23. the ______ plate is the only major plate that is completely oceanic.
- 26. the ridge outer part of the earth consisting of the crust and upper mantle
- 27. ______fit together like pizza puzzle
- 31. the innermost layer of the earth
- 32. outermost layer of a earth composed of ____ and brittle part of the upper mantle.
- 33. the lithosphere consist of only ______ crust
- 35. when one plate eventually slides beneath the other, the process is known as
- 36. something you drink to stay alive
- 38. the planet we live on