Plate Tectonics

3. this is formed when the old crust melts in the subduction zone forming a magma chamber, which eventually finds its way to the surface
5. The Earth's crust is broken up into plates made up of continental and oceanic rock
7. when plates slide past each other they form this kind of boundary
11. the magma causes this in the athenosphere
13. this is when two oceanic plates come together and one slides down under the other
14. these are formed at a subduction zone
15. these ride on convection currents
17. this age of rocks are found closest to the ridge (hint: oldest or youngest)
18. when plates come together they form these
19. --------margin is found at the edge of the continent and is made up of the shelf, slope, and rise
21. rises up at the mid-ocean ridge causing the seafloor to split

1. when plates move away from each other they form this kind of boundary
2. this kind of continental margin happens when the edge of the continent is in the middle of the plate
4. when plates come together this kind of boundary forms
6. this is made up of plates that float on the athenosphere
8. this is a fault in California that has a transform boundary
9. the chains of mountain ranges found on the bottom of the oceans
10. this kind of continental margin occurs when plates meet at the edge of a continent
12. This age of rocks are found at the trenches (hint:oldest or youngest)
16. an active continental margin causes this kind of activity
20. when a continental plate and an oceanic plates collide, this plate goes underneath the other one