1. POS

2. Topic 2: Rocks and the Rock Cycle
Unit 5: Planet Earth
Topic 2: Rocks and the Rock Cycle

3. Rocks Gizmo

5. The Rock Cycle
Three families of Rock:
Igneous
Sedimentary
Metamorphic

7. Igneous From the latin word for “fire”
Igneous rock forms when magma cools and makes crystals
Ex. Granite, quartz, pumice, (ash), basalt, peridot, and obsidian

8. Peridot (August birthstone)

9. Granite

10. Obsidian

11. Quartz

12. Geode-Amethyst

13. Igneous Rock (Kilauea)
Intrusive igneous rock forms underground, where the magma cools slowly (plutonic)
Extrusive igneous rock forms above ground, where the magma (now called lava) cools quickly.

14. Sedimentary rock
Formed by lithification: cementation and compaction of eroded material
Mud-mudstone
Sand-sandstone
It is in this type of rock where we find fossils

15. Sandstone

16. A conglomerate

17. Metamorphic rock Tectonic pressure/friction Radioactive decay
Geothermal activity
Rising magma
depth
Morph-to change
Ex.

18. Marble (from limestone)

19. Mudstone( shale) -Slate-Schist

20. Granite -> Gneiss

22. Assignments
Vocab
Rock Cycle wksht
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