6 Questions, Evidence, and Explanations: The Rock Cycle | 六个问题、证据与解释：岩石循环

📚 6 Questions, Evidence, and Explanations: The Rock Cycle | 六个问题、证据与解释：岩石循环

Rocks are not permanent objects. They form, break down, and change over millions of years. In KS3 science, you need to move beyond naming rocks and start using evidence to answer questions about how the rock cycle works. This article works through six key questions. For each question, you will see the observable evidence and the scientific explanation that links the evidence to the rock cycle.

岩石并不是永久不变的物体。它们在数百万年间不断形成、分解和变化。在 KS3 科学课程中，你需要超越仅仅记住岩石名称，开始运用证据来回答关于岩石循环如何运作的问题。本文梳理六个关键问题。每个问题都会给出可观察的证据，以及将证据与岩石循环联系起来的科学解释。

1. The Three Rock Families | 三大岩石家族

Before tackling questions, you need to recognise the three main rock families: igneous, sedimentary, and metamorphic. Igneous rocks form when molten rock cools and solidifies. Sedimentary rocks form when particles of older rocks, minerals, or shells are deposited, buried, and cemented. Metamorphic rocks form when existing rocks are changed by heat and pressure without melting.

在回答问题之前，你需要认识三大岩石家族：火成岩、沉积岩和变质岩。火成岩由熔融岩石冷却凝固形成。沉积岩由较老岩石的颗粒、矿物或贝壳沉积、埋藏并胶结而成。变质岩由原有岩石在未熔化的条件下受热和压力作用改变而成。

Each family has distinctive textures and minerals. These features are not random. They act as clues. When you describe a rock, you are gathering evidence. Later, you can use that evidence to explain how

Published by TutorHao | KS3 Chemistry Revision Series | aleveler.com

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