1. SCIENCE TIP #13/20/12 USE your Scaling Earth’s Interior for help 1.What are the 4 layers of the interior of the Earth? 2.Which layer is the thickest? 3.Which layer is the thinnest? 4.What is a “P-Wave”? “S-Wave”? 5.What is the Moho?

2. SCIENCE TIP #23/21/12 USE your obj. notes for help 1.What are the three ways we classify Ign. Rocks? 2.Explain Extrusive vs. Intrusive 3.Give two examples of texture of an Ign. Rock. 4.What is Mafic? 5.What is Felsic?

3. Science Tip #3 3/22/12 1.What is the “tear” running right through the middle of Iceland and further down the Atlantic ocean called? What is happening here? (p.119) 2.Iceland is also located right above a “hotspot”—what is this? (p.119) 3. What theory is used to explain both of these phenomena?

4. Science Tip #4 3/29/12 1.Name the 4 types of volcanic eruptions (3 have cones, one doesn’t) 2.What is the difference between composite and shield volcanoes? 3.What is meant by the term “viscous”? 4.What type of lava is high in silica and high in dissolved gases? 5.Name the 2 types of mafic lava.