The Tectonics

1. huge pieces of Earth's crust.
5. the study of many different kinds of Earth science.
6. mechanical or chemical processes that break rocks into smaller pieces.
9. line on a map that connects points with the same elevation.
10. process which water, ice, wind, and gravity remove and tansport sediments.
11. photos or images taken of Earth from space.
13. distance above sea level
15. when two plates move towards each other.
16. when a denser plate is puched beneath a less dense plate.
17. natural physical features of the Earth's surface.
18. map shoing the shape and elevation of the land using contour lines.
19. solid fragments of weathered and eroed rock moved nd dropped into new places.
20. when two plates move away from each other.
21. when two plates slide agaisnt each other.

2. theory saying the continents were once connected and have sinse drifted apart.
3. study of shape of Earth's surface and it's physical features.
4. the amount of matter in the crust. Oceaniccrust is thinner and denser than continental crust.
7. seafloor mountain system formed by divergent boundaries.
8. thicker lines marking every 5th contour line on a map.
12. A supercontinent with mos of the Earth's continents.
14. difference in elevation between two adjacent contour lines of a topographic map.