Note the similarities in the sketches of Mt. St. Helens (Fig. 3.11) and Crater Lake, Oregon (Fig. 3.12). Surmise how Crater Lake may have formed.
Answer to relevant QuestionsWhat could happen to the cities shown in Fig. 3.13 if any of the nearby volcanoes erupted?Refer to Fig. 3.16. What is the viscosity and composition of the lavas which formed Hawaii?What causes chemical weathering?What are the common products of oxidation?What is the order of chemical stability of the common igneous minerals?
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