Earth Dynamics Crossword

4. a permanent change in a rock
5. downward vertical motion of the earth's surface
7. parallel forces that act in opposite directions
8. balance between crust and the denser mantle below itsubsidence downward vertical motion of the earth's surface
11. mountains formed from ash and lava hardening and building up
12. squeezing stress
13. stress that pulls something apart
16. parallel ridges that form where blocks of crust move up and down along the fault
17. an area of many fractured pieces of crust along a large fault
18. crack or fracture in the earth's lithosphere

1. large regions that form where blocks of crust move up and down along the fault
2. mountains formed from compression of continental crust
3. deep underwater troughs created by subduction
6. force acting on a surface
9. when tectonic plates slide horizontally past each other
10. a change in the shape of a rock caused by stress
14. rock does not deform, does not permanently change
15. upward vertical motion of the earth's surface