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Study Guide for Test: Earth's Interior, Mag Field, Continental Drift Test 1. Name three facts about volcanoes 2. Explain the difference between magma and lava. 3. What type of rock is formed by volcanoes? 4. Where picture below shows what part of the earth? 5. Fill in the table below with information about the outer and the inner core. Composition Phase (solid, liquid or gas) Inner Core Outer Core 6. The lithosphere refers to which layer(s) of the earth? 7. Why is the mantle unique among the layer of the earth? 8. Which two layers of the Earth are completely solid? 9. What is the distance from the surface to the center of the earth? 10. Why is the Earth’s magnetic field important? 11. How does a compass work? 12. According to scientific evidence how old is the earth? 13. The Alfred Wegener proposed the existence of a huge landmass called ________________ 14. Give four pieces of evidence for continental drift? 15. What is continental drift? Use the table below answer questions 16 and 17. Approximate Time Period of Some Extinct Organisms Extinct Organism Lived Glossopteris (Plant) 206-250 million years ago Mesosaruaus (reptile) 248-280 million years ago Cynognanthus (reptile) 230-245 million years ago Lystrosaurus (reptile) 206-248 million years ago 16. During the time period of 200 to 220 million years ago, which organisms were alive? 17. During the time period 246 to 290 million years ago, which organisms were alive?