1. Igneous Rock:
Intrusive & Extrusive

2. Igneous
Born of fire, rocks relating to volcanic processes

3. A Variety of Types- All Igneous

4. Observations
Obsidian
Diorite

5. Obsidian Diorite Black Many colors and crystals Smooth Rough Glassy
Sharp
Many colors and crystals
Rough
Opaque

7. Obsidian Diorite Extrusive Intrusive Extruded- Forced out
Think: Intrusions!

8. Extrusive
Extrusive
Extrusive
Intrusive
Intrusive

9. Extrusive
Cools:
Quickly!
Intrusive
Cools:
Slowly...

10. Extrusive Intrusive Large Grained-
Cools Fast!
Cools Slowly...
Fine Grained- No time for big crystals to form
Large Grained-
Time for big crystals to form

11. x 7 Andesite Obsidian Granite Basalt Pumice Rhyolite Diorite Rocks:
Observations: __________
Draw
I think this is extrusive/intrusive (pick one)
x 7
Rocks:
Andesite
Obsidian
Granite
Basalt
Pumice
Rhyolite
Diorite

12. obs on each rock
what’s intr/extr?