Earthquakes

2. a long, high sea wave caused by an earthquake or other disturbance
4. means quickly moving back and forth (or up and down) about a point of equilibrium. The vibration may be periodic (having a pattern) or random.
7. (plates) forming or belonging to a continent; these plates are less dense but typically much thicker.
9. a slight earthquake
10. relating to the structure of the earth's crust and the large-scale processes which take place within it.

1. a sudden violent shaking of the ground, typically causing great destruction, as a result of movements within the earth's crust or volcanic action.
3. a geological process that takes place at convergent boundaries of tectonic plates where one plate moves under another and is forced to sink due to high gravitational potential energy into the mantle.
5. the point on the earth's surface vertically above the focus of an earthquake
6. an instrument that measures and records details of earthquakes, such as force and duration.
8. a smaller earthquake following the main shock of a large earthquake