Based on the visual characteristics and geological knowledge of each rock shown in the second section, I can identify their types:
1)
Sandstone - This is a
Sedimentary rock. It's formed from sand-sized mineral particles that have been compacted and cemented together over time.
2)
Obsidian - This is an
Igneous rock. It's a volcanic glass formed when lava cools rapidly with minimal crystal growth, giving it its characteristic smooth, glassy appearance.
3)
Marble - This is a
Metamorphic rock. It forms when limestone (a sedimentary rock) is subjected to high heat and pressure, causing recrystallization of the calcite or dolomite minerals.
4)
Gypsum - This is a
Sedimentary rock. It typically forms as an evaporite mineral from the evaporation of water containing dissolved sulfate and calcium ions.
5)
Granite - This is an
Igneous rock. It's a coarse-grained intrusive igneous rock formed from the slow cooling of magma beneath the Earth's surface, characterized by visible crystals of quartz, feldspar, and mica.
6)
Slate - This is a
Metamorphic rock. It forms from shale (a sedimentary rock) under low-grade metamorphism, resulting in a fine-grained, foliated rock that splits easily into thin sheets.
Now I'll provide the complete solution to the worksheet.
The completed worksheet answers are:
First Section:
1) C. Metamorphic rock
2) A. Igneous rock
3) B. Sedimentary rock
4) B. Sedimentary rock
5) A. Igneous rock
Second Section:
1) Sandstone - Sedimentary rock
2) Obsidian - Igneous rock
3) Marble - Metamorphic rock
4) Gypsum - Sedimentary rock
5) Granite - Igneous rock
6) Slate - Metamorphic rock
Parent Tip: Review the logic above to help your child master the concept of igneous sedimentary and metamorphic rocks worksheet.
