Plate Tectonics

2. atlantic ocean hot spot
5. plate boundary that results in shallow earthquakes and no volcanoes
6. pacific ocean hot spot
10. scientific theory that explains how major landforms are created as a result of Earth's subterranean movements
12. plate boundary found at midocean ridges
14. rock that makes up oceanic plates
16. the study of prehistoric Earth's magnetic fields recorded in rocks, sediment, or archeological materials.
18. the rigid, outermost rocky shell of a terrestrial planet or natural satellite. On Earth, it is composed of the crust and the lithospheric mantle, the topmost portion of the upper mantle that behaves elastically on time scales of up to thousands of years or more.
21. plate boundary that results in subduction
23. movement caused within a fluid by the tendency of hotter and therefore less dense material to rise, and colder, denser material to sink under the influence of gravity, which consequently results in transfer of heat.

1. process that occurs at mid-ocean ridges, where new oceanic crust is formed through volcanic activity and then gradually moves away from the ridge.
3. ocean with a midocean ridge going down the center, broke up Pangaea, expanding over time.
4. rock that makes up continental plates
7. long chains of active volcanoes with intense seismic activity found along ocean-oceanic convergent tectonic plate boundaries.
8. Earth's largest ocean, surrounded by convegergent boundaries, getting smaller over time
9. a buoyant mass of material in the mantle, which rises because of its buoyancy
11. a seafloor mountain system formed by plate tectonics. This feature is where seafloor spreading takes place along a divergent plate boundary.
13. geological process in which the oceanic lithosphere and some continental lithosphere is recycled into the Earth's mantle at convergent boundaries
15. a layer inside a planetary body bounded below by a core and above by a crust.
17. long, narrow depressions on the seafloor that form at the boundary of tectonic plates where one plate is pushed, or subducts, beneath another.
19. layer of earth that generates earth's magnetic field
20. volcanic locales thought to be fed by underlying mantle that is anomalously high temperature compared with the surrounding mantle.
22. the outermost solid shell of a rocky planet, dwarf planet, or natural satellite. It is usually distinguished from the underlying mantle by its chemical makeup