1. Warm-up 4/4
Page: 135, 1. The 3 major rock types are : __ __ __. Igneous, sedimentary, metamorphic Page: 135, 2. What is the name of the sedimentary rock shown on this page? sandstone Page: 135, 3. The word igneous is from a Latin term that means “ ___________ ___________” from fire or fire formed

2. Warm-up 4/8
Page: 141, 1. Magma that cools deep inside the Earth’s crust forms ______________ igneous rocks. intrusive Page: 141, 2. The size of the crystals in igneous rocks is determined mainly by the ____________ rate of magma. cooling Page: 141, 3. The rock granite has what type of texture? Coarse-grain texture

3. Warm-up 4/9
Page: 141, 1. Many ___________ igneous rocks are composed small mineral grains. extrusive Page: 142, 2. Geologist divide ___________ rocks into 3 families. igneous Page: 142, 3. Felsic (granitic) rock generally has the _ ______ coloring of its main mineral composition. light

4. Objectives: S.W.B.A.T. Classify igneous mineral content by color
Define coarse, fine, glassy, porous textures
Understand that color to following igneous groups: Granitic, Andesitic, Balsaltic

5. Activities: Warm-ups Notes.discussion
Complete 4.2 worksheet b reading Glencoe text
Start igneous rocks 1-4 H.W.

6. IGNEOUS ROCK:
MINERAL COMPOSITION OF IGNEOUS ROCKS
Granitic – igneous rock light in color white to clear, tan, & pink crystals mostly: quartz and feldspar

7. IGNEOUS ROCK:
Basaltic – igneous rock that is dark in color black, dark red-brown crystals Mostly plagioclase, olivine

8. IGNEOUS ROCK:
Andesitic – mineral colors between granitic and basaltic.

9. IGNEOUS ROCK:
Classifying Igneous Rocks Textures

10. IGNEOUS ROCK:
Coarse Grain – means rock has large crystals that can be seen easily by the naked eye. (intrusive : magma)

11. IGNEOUS ROCK:
Fine grain – small crystals, just barely able to see with eye, slightly smaller than sand grains. (extrusive : lava)

12. IGNEOUS ROCK:
Glassy – no crystals at all, cooled too fast for crystals to form (extrusive : lava)

13. IGNEOUS ROCK:
Porous – no crystals, rock full of holes produced by gas bubbles (extrusive – lava full of explosive gases)

14. Lava stone uses:

15. Show video clip

17. Cool down
1. What does a coarse-grain igneous rock mean? Large particles or large crystals 2. If lava cools very-very fast what occurs? Glass forms or tiny crystals occur