marine vocab

3. a fracture in the earths lithosphere
4. irregularly shaped pieces of earths outermost layer
5. theory explaining that the Earth's outer shell is divided into several large, slow-moving plates that float on the hotter, more mobile mantle layer
6. pre-existing rocks from land that have been eroded
9. vast, continuous underwater mountain range formed by plate tectonics
11. a long, narrow, and extremely deep depression on the ocean floor
13. the sideways and downward movement of the edge of a plate
15. theory that Earth's continents have moved and will continue to move

1. local variation in earths magnetic field
2. type of fine-grained deep-ocean sediment composed primarily of the calcium carbonate
7. deep-ocean biogenic sediment composed of the skeletons of microscopic plankton
8. deposit of insoluble material, both organic and inorganic, that accumulates on the seafloor
10. the slow process of rocks breaking apart and changing due to natural forces
12. technique that determines the age of organic materials by measuring the decay of carbon-14
14. linear zone on the seafloor where tectonic plates are pulling apart