Across
- 3. A rigid layer made up of the uppermost part of the mantle and the crust.
- 6. A description of surface features of land.
- 7. One plate going under another plate
- 8. the difference in elevation from one contour line to the next
- 10. the difference in elevation between the highest and lowest parts of an area
- 16. The soft layer of the mantle on which the lithosphere floats.
- 18. Process in which sediment is laid down in new locations.
- 20. A hypothesis that has been tested with a significant amount of data
- 21. The process in which rock is broken down by changes in its chemical makeup
- 22. supercontinent
- 23. on a map, a darker, heavier contour line that is usually every fifth line and that indicates a change in elevation
Down
- 1. The theory that pieces of Earth's lithosphere are in constant motion, driven by convection currents in the mantle.
- 2. A map that shows the surface features of an area.
- 4. A line on a topographic map that connects points of equal elevation
- 5. A plate boundary where two plates move past each other in opposite directions
- 9. The breaking down of rocks and other materials on the Earth's surface.
- 11. A plate boundary where two plates move away from each other.
- 12. a piece of the lithosphere that moves around on top of the asthenosphere
- 13. Processes by which rock, sand, and soil are broken down and carried away (i.e. weathering, glaciation)
- 14. A plate boundary where two plates move toward each other.
- 15. the formation of new areas of oceanic crust, which occurs through the upwelling of magma at midocean ridges and its subsequent outward movement on either side.
- 17. Any process that breaks rock down into smaller pieces without changing the chemistry of the rock; typically wind and water.
- 19. The hypothesis that states that the continents once formed a single landmass, broke up, and drifted to their present locations