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Classifying Rocks

Earth Science - Middle School

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Classifying Rocks sandstone (sedimentary) gneiss (metamorphic, foliated) quartzite (metamorphic, nonfoliated) granite (igneous) shale (sedimentary) slate (metamorphic, foliated) Heat & Pr essure © Copyright NewPath Learning. All Rights Reserved. 94-4670 Visit www.newpathlearning.com for Online Learning Resources. Sedimentary conglomerate limestone Rocks are solid, naturally occurring substances composed of one or more minerals and other matter. Rocks are classified into three groups according to how they were formed: igneous, sedimentary or metamorphic. Sedimentary Rock Formation Sedimentary rocks form from weathering, erosion and layering of sediment that takes place over millions of years. Metamorphic Rock Formation Rocks that changed due to intense heat or pressure in the Earth’s crust are called metamorphic rocks. Metamorphic rocks are further classified as foliated and nonfoliated. basalt pumice granite obsidian limestone sandstone conglomerate Igneous Rock Formation Igneous rocks form when liquid rock cools and hardens. Liquid rock that is under the crust is called magma. When it pours out onto the Earth’s surface, it is then called lava. Pressure Heat

Pause and Review Sort the rocks into the correct category. Draw a line from each rock to the heading. Classifying Rocks © Copyright NewPath Learning. All Rights Reserved. 94-4670 Visit www.newpathlearning.com for Online Learning Resources. granite slate limestone conglomerate sandstone basalt obsidian pumice quartzite gneiss Igneous Rocks Metamorphic Rocks Sedimentary Rocks

Classifying Rocks

Earth Science - Middle School

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