[{"term": "Igneous Rock", "definition": "Rock formed from cooled and solidified magma or lava."}, {"term": "Sedimentary Rock", "definition": "Rock formed from compressed layers of sediment over time."}, {"term": "Metamorphic Rock", "definition": "Rock that has been changed by heat and pressure."}, {"term": "Plate Tectonics", "definition": "The theory that Earth's crust is divided into plates that move on the mantle."}, {"term": "Erosion", "definition": "The wearing away and transport of rock and soil by wind, water, or ice."}, {"term": "Weathering", "definition": "The breaking down of rocks by physical, chemical, or biological processes."}]