岩石循环

理解岩石循环：岩石在数百万年间缓慢地从一种类型转变为另一种类型——火成岩风化成为沉积物，沉积物变成沉积岩，高温和高压形成变质岩，熔融后又开始新的循环。

Understand the rock cycle: rocks slowly change from one type to another over millions of years — igneous rock weathers into sediment, sediment becomes sedimentary rock, heat and pressure create metamorphic rock, and melting starts the cycle again

学习证据 / Evidence

• 将岩石循环描述为一个没有起点和终点的持续过程。
• 追踪至少一条从火成岩到沉积岩再到变质岩并返回的完整循环路径。
• 解释岩石循环通过风化、压力、热量和熔融作用，历经数百万年运行。

• Describe the rock cycle as a continuous process with no beginning or end
• Trace at least one complete path through the cycle from igneous to sedimentary to metamorphic and back
• Explain that the rock cycle operates over millions of years through weathering, pressure, heat, and melting

评估问题 / Assessment

如果{{name}}看到火成岩、砂岩和大理石并排放在一起，他们能解释每种岩石是如何形成的，以及岩石如何在一个永无止境的循环中缓慢地从一种类型转变为另一种类型吗？

If {{name}} saw igneous rock, sandstone, and marble side by side, could they explain how each type forms and how rocks slowly transform from one type to another in a never-ending cycle?