Geosphere Vocab

4. the area where two tectonic plates meet and there is a significant change in their speed or direction of motion
6. a place where two tectonic plates move away from each other
8. openings where lava and steam erupt onto the Earth's surface
10. a place where two tectonic plates slide horizontally past each other
11. the point on the earth's surface vertically above the focus of an earthquake
12. the slower kind of seismic wave that moves in an S-shape

1. the fastest kind of seismic wave that moves as a series of compressions
2. the theory that the Earth's lithosphere is split into plates
3. a place where two tectonic plates move toward each other
5. shaking of the ground caused by seismic waves through Earth's rocks
7. divide an area into triangles for surveying purposes
9. an instrument that measures and records details of earthquakes, such as force and duration