Plate Tectonics Crossword

"supercontinent"
the studyof the alignment of magnetic minerals in rock
new oceanic lithosphere [sea floor] form as magma rises to earth's surface and solidifies at mid-ocean ridges
a long, undersea mountain chain thathas steep, narrow valleyat its center
moving apart
moving together
sliding past eachother
a crack
states that the continents once formed a single landmass
region along a plate boundary where one plates move under another plate
movement of matter due to different in density that are caused by temp.
solid, outer layer of earth that consists of crust and the rigid upper part of the mantle.
solid, plastic layer of the mantle beneath the lithosphere made of mantle rock that flows very slowly
the crust beneath the ocean
thickest beneath high mountain ranges
trembling of the ground that is caused by a sudden release of energy when rocks along a fault move
fissure in the earth's surface through which magma and gases are expelled
chain of volcanic island
zone of active volcanoes that encircles the pacific ocean
the lithosphere of the earth is divided into a small number of plates which float on and travel independently over the mantle and much of the earth's seismic activity occurs at the boundaries of these plates.