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"