Plate tectonics

3. boundary, occurs when plates move towards each other and collide
4. wave, a wave of energy that travels through the Earth and away from an earthquake in all directions
8. is a fracture or zone of fractures between two blocks of rock
11. is a channel for conveying water or other fluid
14. boundary, occurs when two tectonic plates move away from each other
15. the point on the earth's surface vertically above the focus of an earthquake
16. zone, is a collision between two of Earth's tectonic plates, where one plate sinks into the mantle underneath the other plate

1. hot molten or semifluid rock erupted from a volcano or fissure, or solid rock resulting from cooling of this
2. a mountain or hill, typically conical, having a crater or vent through which lava, rock fragments, hot vapor, and gas are being or have been erupted from the earth's crust
5. is not expected to ever erupt again
6. hot fluid or semifluid material below or within the earth's crust from which lava and other igneous rock is formed on cooling
7. a sudden and violent shaking of the ground, sometimes causing great destruction, as a result of movements within the earth's crust or volcanic action
9. a long high sea wave caused by an earthquake or submarine landslide
10. is the outermost shell of a planet
12. plates, are pieces of Earth's crust and uppermost mantle, together referred to as the lithosphere
13. boundary, is a place where plates slide sideways past each other
14. have not erupted for a very long time but may erupt at a future time