plate tectonics Crossword

proposed continental drift
mantles middle region
hypothesis that one day all the continents were one land mass
the two sub layers of the crust that float around
movement of matter that results in difference of density
tectonic plates that move twords each other and collide
the ration of mass of an object to its volume
rock and soil setting down and piling up
when tectonic plates move away or divide
ground shaking caused by caused by earths crust moving
movement or rock or soil from one place to another
ridgid outer part of he earth consisting of the crust and mantle
continuous double ridged chain of mountains on the ocean floor in the atlantic ocean to the indian and pacific oceans
a large landform that goes taller than the surrounding land made from tectonic forces
a tectonic plate at the bottom of the oceans
the name given to the landmass that later split apart into pieces
theort that the earths surface is made up of large plates called tectonic plates
when two ocean plates pull apart and and magama rises to create new crust
when two plates collide and the denser plate goes under
tectonic plates that slide next to each other in opposite directions
a low stretch of land between hills
a mountain or hill that has a vent hole that allows hot rock or apor to be released
process where rock breaks down into smaller pieces or changes composition