Earth Science

1. the occurrence or frequency of earthquakes in a region.
4. hit with force when moving
7. places where plates slide sideways past each other
9. a force that changes the direction of an object towards you
11. an aftereffect of a distressing or traumatic event
13. the property of matter and radiation which is manifest as a capacity to perform work (such as causing motion or the interaction of molecules).
14. a real or imaginary line that separates two things
16. an act of changing physical location or position or of having this changed.
18. the outermost shell of a terrestrial planet
19. 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.

2. occurs when plates move towards each other and collide
3. a fracture or zone of fractures between two blocks of rock
4. any of the world's main continuous expanses of land (Africa, Antarctica, Asia, Australia, Europe, North America, South America).
5. part of the earth's surface directly above the focus of an earthquake
6. gigantic pieces of the Earth's crust and uppermost mantel
8. a mild tremor preceding the violent shaking movement of an earthquake
10. occurring in or frequenting the ocean and especially the open sea as distinguished from littoral or neritic waters
12. As the plates move, their edges ___ and grind against each other.
15. moving or extending in different directions from a common point
17. an act of exerting force on someone or something in order to move them away from oneself.