Geography Vocab

5. a conical volcano built up by many layers of hardened lava and tephra.
6. The innermost part of the earth
7. extremely hot liquid and semi-liquid rock located under Earth's surface
9. places where plates slide sideways past each other
10. an area on Earth where two or more lithospheric plates collide
12. a seafloor mountain system formed by plate tectonics
13. the location on the surface of the Earth directly above where the earthquake starts
14. when an oceanic plate runs into a continental plate and slides beneath it.
15. When magma flows or erupts onto Earth's surface, it is called lava
16. a volcano that produces low viscosity, runny lava, it spreads far from the source and forms a volcano with gentle slopes
18. an area where the earth's crust is splitting apart.

1. the mostly solid bulk of Earths interior
2. instruments used to record the motion of the ground during an earthquake
3. the movement of particles through a substance, transporting their heat energy from hotter areas to cooler areas
4. a steep conical hill of loose pyroclastic fragments
7. an area under the rocky outer layer of Earth, called the crust, where magma is hotter than surrounding magma.
8. measure of the magnitude of an earthquake
9. long, narrow depressions on the seafloor that form at the boundary of tectonic plates where one plate is pushed, or subducts, beneath another.
11. a boundary formed when two tectonic plates move away from each other.
17. a fracture or zone of fractures between two blocks of rock.