Topical Questions
These questions are keyed to the major topics in the chapter. Usually a question that is answered at the back of the book is paired with a similar one that is not.
On May 18, 1980, Mt. St. Helens in Washington erupted. The 9677-ft high summit was lowered by 1314 ft by the eruption. Approximately 0.67 cubic miles of debris was released into the atmosphere. How many cubic meters of debris was released?
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