Plate Tectonics

3. when two tectonic plates are moving away from each other
4. a number of volcanoes in a volcanic arc in western North America
7. part of the boundary between the Pacific and North American plates
9. when two tectonic plates move away from each other.
10. a mostly underwater mountain range in the Atlantic Ocean
12. a continuous range of underwater volcanoes that wraps around the globe
14. two tectonic plates moving toward each other and colliding
16. occur in ocean basins or on or near ocean ridges
19. places where plates slide sideways past each other
21. when two plates collide
23. two tectonic plates colliding and the less dense plate, submerges underneath the denser one
24. a path along the Pacific Ocean characterized by active volcanoes and frequent earthquakes
25. the edge of the lithospheric plates

1. a series of mountains or mountain ridges closely related in position and direction
2. include the highest mountains in the world
5. where two plates converge, and one plate is thrust beneath the other.
6. a series of contiguous geographic trenches
8. he outermost layer of Earth's lithosphere that is found under the oceans
11. long, narrow depressions on the seafloor
13. the outermost layer of Earth's lithosphere that makes up the planet's continents
15. an opening in the Earth's crust through which lava, ash, and gases erupt
17. heat transfer involving the movement of energy and heat from one place to another
18. magma moves in between tectonic plates and creates new oceanic crust
20. gigantic pieces of the Earth's crust and uppermost mantle.
22. a weak to violent shaking of the ground because of sudden rock movement below Earth's surface