Where do magma and lava come from? What are the ways magma forms, and how does each work? What are the major types of magma and how/why are their compositions different?

Name: Exam 2 Study Guide
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Geo 101 – The Dynamic Earth Exam 2 Study Guide THIS IS NOTALLINCLUSIVE – especially if you don’t fill it out fully. 1.You must know all the terminology we covered in order to answer the questions. 2. Where do magma and lava come from? - The upper mantle 3.What are the ways magma forms, and how does each work? 1. Decrease in pressure - Heat + decrease in pressure allows rock to melt 2.Adding volatiles -Adding volatiles to rock decreases melting temperature 3. Heat transfer - Exactly how it sounds: heat rises up and melts rock 4. What are the major types of magma and how/why are thei