I can now see the fourth row of rocks clearly. I have identified the final three rocks: gypsum, marble, and granite. Let me classify each of these:
10. Gypsum: This is a sedimentary rock composed of the mineral gypsum (calcium sulfate dihydrate). It often forms in evaporative environments where water has evaporated, leaving behind mineral deposits.
11. Marble: This is a metamorphic rock that forms from the metamorphism of limestone. It's characterized by its crystalline texture and often shows veining or banding patterns.
12. Granite: This is an igneous rock, specifically a coarse-grained intrusive rock that forms from the slow cooling of magma beneath the Earth's surface. It typically contains visible crystals of quartz, feldspar, and mica.
Now I have classified all 12 rocks. Let me summarize my findings to provide a complete answer to the question.
Based on my analysis of the image, here is the classification of each rock as igneous, sedimentary, or metamorphic:
1. Shale - Sedimentary
2. Schist - Metamorphic
3. Limestone - Sedimentary
4. Conglomerate - Sedimentary
5. Gneiss - Metamorphic
6. Pumice - Igneous
7. Basalt - Igneous
8. Sandstone - Sedimentary
9. Slate - Metamorphic
10. Gypsum - Sedimentary
11. Marble - Metamorphic
12. Granite - Igneous
This classification is based on the geological properties of each rock type:
- Sedimentary rocks form from the accumulation and lithification of sediments (shale, limestone, conglomerate, sandstone, gypsum)
- Metamorphic rocks form from the transformation of existing rocks under heat and pressure (schist, gneiss, slate, marble)
- Igneous rocks form from the cooling and solidification of magma or lava (pumice, basalt, granite)
Parent Tip: Review the logic above to help your child master the concept of rock types worksheet.
