Subject: Rocks and Minerals
1. What are the three types of rock?
• Igneous, sedimentary, and metamorphic.
2. What are the characteristics of igneous rock?
• Created when magma or lava cools, very hard, have no layers, may appear grainy or have bubble holes.
3. What are some types of igneous rock?
• Granite, obsidian, pumice, scoria, rhyolite…
4. What are some characteristics of sedimentary rock?
• Made when other rocks are broken down and pressed back together, often has layers, frequently found by bodies of water, make up much of the rock on the planet, may contain fossils…
5. What are some types of sedimentary rock?
• Sandstone, limestone, shale, gypsum, halite…
6. What are some characteristics of metamorphic rock?
• Very hard, formed when igneous or sedimentary rocks are squashed or heated, may have crystals, usually solid or without holes or spaces, rarely holds fossils
7. What are some types of metamorphic rock?
• Schist, gneiss, quartz, marble, graphite, slate, coal…
8. How does the rock cycle work?
• Magma is released from underground and cools to form igneous rock. These igneous rocks are subjected to forms of erosion and break down. The pieces are pressed together to form sedimentary rocks. Sedimentary rocks are subjected to extreme heat or pressure and change into metamorphic rock.
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