1. Monday January 28, 2013 (Igneous Rocks)

2. The Launch Pad Monday, 1/28/13 Draw a diagram of the rock cycle. Label all rock types, intermediate states, and factors that cause changes.

3. Announcements Happy National Meat Week!

4. Announcements I will be available after school today until 4:45.

5. Assignment Currently Open Summative or Formative? Date IssuedDate Due Date Into GradeSpeed Final Day Quiz 15S512/11 1/15 TOMORROW Quiz 16S11/18 1/242/7

6. Recent Events in Science Giant Squid Emerges from the Deep to Appear on Your Screen Read All About It! www.scienceworldreport.com/articl es/4558/20130125/giant-squid- emerges-deep-appear-screen.htm It's the modern day kraken, the horror that appeared in "20,000 Leagues Under the Sea" and tried to sink Captain Nemo's submarine. It's also one of the most mysterious animals beneath the ocean considering its size; it's the giant squid. However, the new footage of this squid has let scientists learn a little bit more about the animals that have haunted the ocean's depths. This Sunday, the giant squid will leave the ocean and appear right in your living room. The Discovery Channel is airing its new show, "Monster Squid: The Giant is Real", at 8 p.m. EST. Produced with Japan's NHK network, the show recounts the stories of three scientists as they hunt for the giant squid in the Pacific Ocean off of Japan. Although the squid has never been seen alive until now, the public received an advanced peek of the creature on a video clip from the show posted on YouTube.

7. Igneous Rocks

8. Igneous rocks form as magma cools and crystallizes. Rocks formed on the surface are formed from lava (a material similar to magma, but without gas) are called volcanic or extrusive rocks. Igneous rocks that are formed inside the Earth are called plutonic or intrusive rocks.

9. When magma cools, its ions crystallize into orderly patterns. The size of the crystal is determined by the rate of cooling. Slow cooling rates form large crystals. Fast cooling rates form microscopic crystals. Very fast cooling rates form glass.

10. Classification of igneous rocks is based on the rock’s texture and mineral constituents. Texture refers to the size and arrangement of the crystals in the rock. Types of igneous rock textures: Coarse-grained – slow rate of cooling Fine-grained – fast rate of cooling graniteandesite

11. Classification of igneous rocks is based on the rock’s texture and mineral constituents. Texture refers to the size and arrangement of the crystals in the rock. Types of igneous rock textures: Glassy – very fast rate of cooling Porphyritic (two crystal sizes) – two rates of cooling obsidianpumice porphyritic granite

12. Figure 3.5

13. Figure 3.5 B

14. Figure 3.5 A

15. Glassy (obsidian) Figure 3.7

16. Figure 3.8 pumice

17. Figure 3.5 D

18. Worksheet Igneous Rocks