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Types of Rock Sorting Activity Use the clues to sort the rocks below into Igneous, Metamorphic, or Sedimentary. Be able to justify your answers. 1. Pressure changes layers of dead plants into coal 2. Lava flows from cracks in the earth and hardens into basalt 3. Layers of shell or coral sand and mud form limestone 4. Heat and pressure change rocks inside the earth’s crust into gneiss 5. Hot lava filled with gas cools quickly and forms pumice 7. Pressure changes layers of mud into shale 8. Heat and pressure change sandstone into quartzite 9. Layers of mud made mostly of tiny shells and calcite crystals form the soft rock chalk 11. Heat and pressure deep in the earth change shale to slate 12. Hot lava on the earth’s surface cools quickly to form obsidian 10. Magma cools slowly and hardens into granite 6. Heat and pressure change limestone into marble Types of Rock Sorting Activity Use the clues to identify the rocks below as Igneous, Metamorphic, or Sedimentary. Explain why on the lines provided. Type of Rock: ___________________ Why? _________________________ _______________________________ 1. Pressure changes layers of dead plants into coal Type of Rock: ___________________ Why? _________________________ _______________________________ 4. Heat and pressure change rocks inside the earth’s crust into gneiss Type of Rock: ___________________ Why? _________________________ _______________________________ 7. Pressure changes layers of mud into shale Type of Rock: ___________________ Why? _________________________ _______________________________ 10. Magma cools slowly and hardens into granite Type of Rock: ___________________ Why? _________________________ _______________________________ 2. Lava flows from cracks in the earth and hardens into basalt Type of Rock: ___________________ Why? _________________________ _______________________________ 5. Hot lava filled with gas cools quickly and forms pumice Type of Rock: ___________________ Why? _________________________ _______________________________ 3. Layers of shell or coral sand and mud form limestone Type of Rock: ___________________ Why? _________________________ _______________________________ 6. Heat and pressure change limestone into marble Type of Rock: ___________________ Why? _________________________ _______________________________ Type of Rock: ___________________ Why? _________________________ _______________________________ 8. Heat and pressure change sandstone into quartzite 9. Layers of mud made mostly of tiny shells and calcite crystals form the soft rock chalk Type of Rock: ___________________ Why? _________________________ _______________________________ Type of Rock: ___________________ Why? _________________________ _______________________________ 11. Heat and pressure deep in the earth change shale to slate 12. Hot lava on the earth’s surface cools quickly to form obsidian Types of Rock Sorting Activity KEY 1. Sedimentary 2. Igneous 3. Sedimentary 4. Metamorphic 5. Igneous 6. Metamorphic 7. Sedimentary 8. Metamorphic 9. Sedimentary 10. Igneous 11. Metamorphic 12. Igneous
