1. IGNEOUS ROCKS

2. Igneous Rock – rock formed when magma cools and solidifies

3. Felsic Rocks – light colored rocks made of aluminum, potassium, silicon, and sodium
Mafic Rocks – dark colored rocks made of calcium, iron, and magnesium

4. Intrusive Igneous Rock – magma that cools underground
Slow cooling of magma = Large crystal rocks

5. Extrusive Igneous Rock – magma that cools after erupting onto the earth’s surface
Fast cooling of magma = Small crystal rocks

6. 1 2 3 4

7. Granite Felsic or Mafic? Slowly Cooled or Quickly Cooled?
Intrusive or Extrusive?
granite

8. Basalt
4. Felsic or Mafic? 5. Slowly Cooled or Quickly Cooled? 6. Intrusive or Extrusive?
Andesite

9. Rhyolite
7. Felsic or Mafic? 8. Slowly Cooled or Quickly Cooled? 9. Intrusive or Extrusive?
Rhyolite

10. Gabbro
10. Felsic or Mafic? 11. Slowly Cooled or Quickly Cooled? 12. Intrusive or Extrusive?
Rhyolite

11. Obsidian
13. Felsic or Mafic? 14. Slowly Cooled or Quickly Cooled? 15. Intrusive or Extrusive?
Obsidian

12. Granite Felsic Slowly Intrusive Felsic or Mafic?
Slowly Cooled or Quickly Cooled?
Intrusive or Extrusive?
granite

13. Basalt Mafic Quickly Extrusive
4. Felsic or Mafic? 5. Slowly Cooled or Quickly Cooled? 6. Intrusive or Extrusive?
Mafic
Quickly
Extrusive
Andesite

14. Rhyolite Felsic Quickly Extrusive
7. Felsic or Mafic? 8. Slowly Cooled or Quickly Cooled? 9. Intrusive or Extrusive?
Rhyolite

15. Gabbro Mafic Slowly Intrusive
10. Felsic or Mafic? 11. Slowly Cooled or Quickly Cooled? 12. Intrusive or Extrusive?
Rhyolite

16. Obsidian Mafic Quickly Extrusive
13. Felsic or Mafic? 14. Slowly Cooled or Quickly Cooled? 15. Intrusive or Extrusive?
Mafic
Quickly
Extrusive
Obsidian