Useful Words and Expressions Crust-地壳 Mantle-地幔 Lithosphere-岩石圈 Asthenosphere-岩流圈 Plate Tectonics-板块构造学说 Weathering-风化 Hydrolysis-水解 ava-熔岩 Parent materia-原生材料Useful Words and Expressions • Crust –地壳 • Mantle –地幔 • Lithosphere – 岩石圈 • Asthenosphere – 岩流圈 • Plate Tectonics – 板块构造学说 • Weathering – 风化 • Hydrolysis – 水解 • Lava –熔岩 • Parent material –原生材料