Plate Tectonics By:Michael Bond Crossword

the ridge, brittle layer made up of the crust and the uppermost part of the mantle
transfer of heat by movement of a fluid
the soft, flexible upper layer of the mantle, on which the tectonic plates move
where two tectonic plates move away from each other
where two tectonic plates move toward each other
movement within hot fluids, when the heat source is on the bottom
the theory that all Earth's continents were once joined together into a single large landmass, and then moved apart
convection currents in the mantle that occur because hot rock in the lower part of the mantle is less dense and rises
a system of connected underwater mountain ranges that run throughout the world's ocean
"all land"
the process by which new oceanic crust forms when magma rises up and solidifies at the mid-ocean ridges
the process by which one tectonic plate sinks below another
large pieces of the lithosphere that slowly move on top of the asthenosphere