Across
- 5. Areas where two plates grind past each other resulting in faults such as the San Andreas. Earthquakes often occur at fault lines.
- 6. Convergent boundary where an oceanic plate is pushed beneath a continental place forming a trench. The oceanic crust melts resulting in the formation of volcanoes.
- 9. the layer of the Earth that the lithosphere floats on and contains the convection currents.
- 11. line that connects places on a topographic map that are all at the same elevation (eventually a closed loop)
- 12. the theory that pieces of Earth's Lithosphere are in constant motion, driven by convection currents in the mantle.
- 15. the movement of a fluid, very much like a conveyor belt of thermal energy, that is the mechanism in the asthenosphere for plate movement.
- 16. height above sea level.
- 17. a well researched idea or thought that has a substantial amount of evidence to support it, but can still be disproved.
- 18. a lowering in the elevation of land.
- 19. A series or chain of mountains that are close together and rise 300m (1000ft.) above its surrounding area.
- 21. a large valley shaped area of the earth in which plates of theEarth's crust are moving away from each other, forming a system of cracks and faults.
- 22. the process by which molten material adds new oceanic crust to the oceanic floor.
- 23. The scientist that was given the most credibility for Pangea.
- 24. Underwater mountain ranges where the crust is spreading apart creating new ocean floor at a divergent boundary.
- 25. where two plates meet.
- 28. areas where plates move toward each other and collide, causing uplift.
- 29. the super continent that existed approximately 225-260 million years ago that means 'all lands' in Latin.
Down
- 1. Study of the shapes and features of the Earth's surface.
- 2. a deep depression of the sea floor caused by the suduction of one plate under another at a convergent boundary.
- 3. Long, continuous volcanic chain of various mountains
- 4. The layer of the Earth that contains the plates.
- 7. Areas where plates move away from each other, forming either mid oceanic ridges or rift valleys.
- 8. the difference between the highest elevation point and lowest elevation point on a map
- 10. the vertical difference in elevation between neighboring contour lines.
- 13. a crack in the Earth's crust where rocks slide past one another.
- 14. the hypothesis that the continents slowly move across Earth's surface.
- 17. shows the three dimensional shape and elevations of an area of land in two dimensions.
- 20. a map made of pictures of the Earth taken from a satellite orbiting the Earth.
- 26. Man's best friend
- 27. An area where volcanoes are concentrated on the edges of continents, along island chains or beneath the sea forming long mountain ranges.