Plates / Earthquakes / Volcanoes Crossword Puzzle

QUESTIONS LIST: continental drift : the hypothesis that the continents slowly move across earth's surface, pangaea : the name of the single landmass that began to break apart 200 million years ago and gave rise to today's continents, fossil : any trace of an ancient organism that has been preserved in rock, mid : _ ocean ridge - form long chains of mountains that rise up from the ocean floor, subduction : the process by which the ocean floor sinks beneath a deep-ocean trench and back into the mantle again, plates : a section of the lithosphere that slowly moves over the asthenosphere carrying pieces of continental and oceanic crust, divergent : _ boundary - a plate boundary where two plates move away from each other, convergent : _ boundary - a plate boundary where two plates move toward each other, transform : _ boundary - a plate boundary where two plates move past each other in opposites directions, plate tectonics : the theory that pieces of earth's lithosphere are in constant motion, driven by convection currents in the mantle, fault : a break in the earth's crust along which rocks move, rift valley : a deep valley that forms where two plates move apart, wegener : the person that provided the evidence for land features for his hypothesis, mantle : the layer of hot solid material between earth's crust and core, earthquakes : the shaking that results from the moment of rock beneath earth's surface, core : the central region of the sun where nuclear fusion takes place, crust : the layer of rock that forms earth's outer surface, density : the measurement of how much mass of a substance is contained in a given volume