Crossword Puzzle !

3. its where two tectonic plates meet
4. a type of elastic wave, also called seismic waves, that can travel through gases
6. is a process that takes place at convergent boundaries by which one tectonic plate moves under another tectonic plate
8. an unsatisfactory feature of one's work
9. a divergent boundary or divergent plate
12. a type of seismic, also known as the elastic s-waves
13. the crust and upper mantle of the earth
14. the thin part of the earth's crust that under lies the ocean basins
15. the point on the earth's surface vertically above the focus of an earthquake

1. a numerical scale for expressing the magnitude of an earthquake on the basis of seismograph
2. in plate tectonics, a boundary also known as a destructive boundary
3. the part of a continent that is stable and forms the central mass of the continent
4. a theory explaining the structure of the earth's crust
5. the think crust of the earth's crust that forms the large landmasses, it is generally older and more complex than the oceanic crust
6. the branch of science concerned with earthquake and related experience
7. the gradual movement of the continents across the earth's surface through geological time
10. the upper layer of the earth;s matle, below the listhosphere
11. a sudden and violent shaking of the ground, sometimes causing destruction, as a result movements of the earth's crust is involved