Unit 3 Vocab

4. A ______ ring-shaped coral reef, encircling a shallow lagoon
5. stress that cause plates to collide twards each other
6. This is comprised of the continental shelf, slope, and rise, also known as the edge of the continent
9. A _____ is a long, narrow deep depression on the ocean floor
10. Valley Also known as an "undersea valley" located along the center of the mod-ocesn ridge, where lava seeps out and creates new ocean floor
11. Type of boundary created when plates move towards each other
12. This layer is composed of both the crust and the protion of the upper mantle that behaves as a brittle, rigid solid
14. This happens from stress that results in the plates sliding past each other

1. This is the solid upper layer, which behaves plastically. Convection currents also occur here.
2. Type of current that is an underwater mudslide of sediments
3. Underwater part of the continent that gently slopes
7. Type of boundary created when plates move away from the each other
8. A seamount whose top has been eroded by wave action, the subsides
13. Type of boundary created when plates slide past each other