Planetary Geology Crossword Puzzle

QUESTIONS LIST: crust : low-density surface layer of a planet, erosion : wearing down or building up of geological features, core : dense central region of a planet that has undergone differentiation, differentiation : the process by which gravity separates materials according to density, cratering : creation of bowl-shaped impacts by objects striking a planet's surface, seismic waves : earthquake-induced vibrations that travel through a planet, volcanism : eruption of molten rock from a planet's interior onto its surface, faults : places where plates slip sideways relative to each other, lithosphere : relatively rigid outer layer of the planet, hot spot : a place within the lithosphere where a plume of hot mantle materials rises, mantle : rocky layer between a planet's core & crust, tectonics : disruption of a planet's surface by internal stresses, lava : molten rock, earth : largest terrestrial planet, geo : prefix meaning "earth"