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The Rock Cycle

The Rock Cycle. Chapter 4 Section 1. 2 Ways Rocks Have Been Used By Humans:. Tools like arrowheads, hammers, spear points, knives, and scrapers out of chert and obsidian rocks. To make buildings, monuments, and roads out of granite, limestone, marble, sanstone , and slate

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The Rock Cycle

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  1. The Rock Cycle Chapter 4 Section 1

  2. 2 Ways Rocks Have Been Used By Humans: • Tools like arrowheads, hammers, spear points, knives, and scrapers out of chert and obsidian rocks • To make buildings, monuments, and roads out of granite, limestone, marble, sanstone, and slate • Materials- concrete and plaster

  3. 4 Processes That Shape the Earth • Weathering- H2O, wind, ice, and heat break down rock into fragments- sediment • Erosion- H2O, wind, ice, and gravity erode and movesediments to collect somewhere else • Deposition- sediment is deposited or laid down in bodies of H2O and other low lying areas • Uplift- movement within the Earth that cause rocks inside the Earth to be moved up to the Earth’s surface

  4. Rock Cycle Weather & Deposit,-Sedimentary Rocks Heat & Pressure- Metamorphic Rocks Melting to magma, cooling of magma-Igneous Rock

  5. Rock Classification Composition Texture • Chemical makeup of rocks; describes either the minerals or the materials in the rock. • Quality of a rock based on the sizes, shapes, and position’s of the rock’s grains • How rocks look can reveal how they were made • Fine-grained- Siltstone • Medium-grained-Sandstone • Coarse-grained- Conglomerate

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