3: Rocks
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- 3.1: Igneous Rocks
- This page discusses igneous rocks, detailing their formation from molten material, classification as intrusive or extrusive, and mineral composition. It highlights types such as felsic, mafic, and ultramafic, and notes their common uses in construction, tools, and art. The lesson also emphasizes the distinctions in crystal size and composition among different igneous rocks.
- 3.2: Sedimentary Rocks
- This page discusses the White House's construction in 1792 using porous sandstone, initially causing water damage, which was mitigated with a protective mixture that contributed to its white color. It highlights sedimentary rocks like sandstone, detailing their formation through compaction and lithification processes like cementation. The lesson further categorizes various types of sedimentary rocks based on composition and formation methods.
- 3.3: Metamorphic Rocks
- This page discusses the formation and characteristics of metamorphic rocks created through metamorphism, influenced by heat and pressure. It distinguishes between foliated and non-foliated types and explores contact and regional metamorphism. Common examples like slate, schist, quartzite, and marble are highlighted, along with their applications in construction and art. Key concepts related to metamorphic rocks and their uses are emphasized throughout the lesson.