Tectonic Vocabulary

3. - the degree of compactness of a substance determined by the mass/volume.
7. - thin, more dense crust that may subduct in a collision.
9. - the scientific theory describing the large-scale motion of plates and the interactions between
12. - string of volcanoes and earthquakes around the edges of the Pacific Ocean. 90% of all
14. - two diverging tectonic plates where new crust forms from upwelling magma. It creates the

1. - process where one tectonic plate slides beneath another.
2. - created when Earth tectonics plates move apart and can be found on both land and water.
4. and 75% of all active volcanoes on Earth occur here.
5. - Depressions of the sea floor, narrow in width, but very long. Deepest parts of the ocean floor.
6. - plate boundary where two plates divide, move apart.
8. mountain chain in the world.
10. - plate boundary where two plates slide parallel against one another.
11. - thicker, less dense crust that makes up land. Does not subduct.
13. - plate boundary where two plates collide, come together.