Unit 5 & 6 Crossword

an attractive force that exists between all objects that have mass
the mass per unit of volume
the brittle rocky outer layer
the thick middle layer in the solid part of the earth
the rigid outermost layer in the solid part of the earth
the partially melted portion of the mantle below the lithosphere
the dense metallic center of the Earth
name given to a supercontinent that began to break apart approximately 200 million years ago
the movement of Earths continents over time
long, narrow mountain range on the ocean floor; formed by magma at divergent plate boundaries
the process by which new oceanic crust forms along a mid-ocean ridge and older oceanic crust moves away from the ridge
an event that causes a magnetic field to reverse action
theory that the earths surface is broken into large, rigid pieces that move with respect to each other
the boundary between two plates that move away from each other
the boundary between two plates that move toward each other
the process that occurs when one tectonic plate moves under another tectonic plate
the circulation of particles within a material caused by differences in thermal energy and density
a crack or fracture in earths lithosphere along which movements occur
energy that travels as vibrations on and in earth
vibrations caused by the rupture and sudden movement of rocks along a break or a crack in the Earth's crust
a location inside Earth where seismic waves originate and rocks first move along a fault and from which seismic waves originate