Plate Tectonic Word Search Crossword

Wegener's hypothesis that all continents were once connected
an actively deforming region where two or more tectonic plates or fragments of the lithosphere move towards one another and collide
Theory that Earth's crust and upper mantle are broken into plates that float and move around on plastic-like layer of the mantle
a liner feature that exists between two tectonic plates that are moving away from each other
A large section of Earth's oceanic or continental crust and rigid upper mantle that moves around on the asthenosphere
Large, ancient landmass that was composed of all the continents joined together
the process that takes place at convergent boundaries by which one tectonic plate moves under another tectonic plate and sinks into the mantle
area where new ocean floor is formed when lava erupts through cracks in the Earth's crust
Hess's theory that new seafloor is formed when magma is forced upward toward the surface at a mid-ocean ridge
current in Earth's mantle that transfers heat in Earth's interior and is the driving force for plate tectonics
a place where two plates slip past each other, moving in opposite directions
the place where two plates move apart, or diverge
the place where two plates come together, or converge
when two plates slide apart and forms a deep valley along the divergent bounday
a device that bounces sound waves off underwater objects
breaks in the Earth's crust where rocks have slipped past each other
a well tested concept that explains a wide range of observations
a major volcanic belt formed by the many volcanoes that rim the Pacific Ocean
a weak spot in the crust where molten material, or magma, comes to the surface
a molten mixture of rock-forming substances, gases, and water from the mantle