plate tectonics puzzle

fill in the answer to the definitions in the puzzle.

An online crossword puzzle with 10 words. Play it free at AgileCrosswords.com.

Clues

major geologic discontinuity or suture marking the juncture of lithospheric plates that have been jo
The dozen or so plates that make up the surface of the Earth.
any of various instruments for measuring and recording the vibrations of earthquakes.
measuring the direction, intensity, and duration of earthquakes by measuring the actual movement of
an area where 2 plates are moving apart
occur when two plates are sliding along each other in opposing directions
a theory of global tectonics in which the lithosphere is divided into a number of crustal plates, ea
a record made by a seismograph.
a point, directly above the true center of disturbance, from which the shock waves of an earthquake
a central point, as of attraction, attention, or activity