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Plate Tectonic Crossword Puzzle

Across
Super-Continent
Seismic waves that move in a rolling motion
The rigid outer part of the Earth
A long narrow mountain chain found on the floor of the ocean
The location on the Earth's surface directly above the focus
Seismic wave that causes particles in the ground to move
The origin of waves where rock first moves
Down
The upper layer of Earth's mantle
The distance from the surface to the ocean floor
Vibrations in the ground