Practice and Revision - Rocks and Rock Types

Core concept

Igneous rocks form when molten magma or lava cools and solidifies, like granite (formed underground) and basalt (formed from lava).

How it works

Sedimentary rocks form when layers of sediment (sand, mud, organic matter) are compressed over time, like sandstone and limestone.

Why it matters

Metamorphic rocks form when existing rocks are transformed by heat and pressure, like marble (from limestone) and slate (from shale).

Key detail

Understanding rock types helps us learn about Earth's geological history and how different landscapes and materials are formed.