Crust - Earth's outer layer, Mantle - Layer beneath crust, Core - Earth's innermost layer, Convection current - Heat transfer in mantle, Tectonic plate - Large crustal slab, Plate boundary - Where plates meet, Continental drift - Movement of continents, Seafloor spreading - New oceanic crust forms, Subduction - One plate under another, Fault - Crack in Earth's crust, Earthquake - Sudden ground shaking, Volcano - Erupting mountain, Mountain range - Series of connected mountains, Ocean basin - Large underwater area, Rift valley - Lowland between highlands, Mid-ocean ridge - Underwater mountain chain, Trench - Deep oceanic valley, Hot spot - Volcanic activity area, Pangaea - Supercontinent, Continental crust - Thicker land crust,

Geology/Plate Tectonics Tier 3

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