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Plate Tectonics Crossword Puzzle

Author: Ben Nelson
Across
A force that push plates up mid-ocean ridges.
The crust and part of the mantle
The outer shell of earth
The middle of earth
A network of satellites that use lasers to track movement of continents
A mountain that has a hole in the top that occasionally spews out lava
A current in the crust that brings magma to the surface
When it feels like the earth is shaking
A theory that explains that continents were once together
A force that pulls plates into the core
Down
A mountain deep in the ocean.
A 250 million year old super continent
A theory proposed by Harry Hess
Explains how rocks turn into magma, then come back to the surface
A theory that the plates are moving
A network of satellites that tracks the rate the plates move at
Very big land masses
The man who proposed seafloor spreading.
A way to map the ocean floor using sound waves.
Large chunks of earth