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Western Governors University (WGU) GEOG1312 D199 Introduction To Physical And Human Geography Practice Exam

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How many grams make up one petagram?
Correct Answer:
10^15 grams
Explanation:
One petagram is equal to 10^15 grams. The metric prefix "peta-" denotes a factor of one quadrillion, or 10^15. This system of prefixes is designed to simplify the expression of large quantities in scientific contexts. For example, a gram is a standard unit of mass in the metric system, and when prefixed with "peta," it indicates an exceedingly large mass measurement. Hence, when converting the unit, the definition of the prefix confirms that one petagram corresponds to 1,000,000,000,000,000 grams, or 10^15 grams. Understanding these metric prefixes is essential for interpreting and working with large-scale measurements across various scientific disciplines.

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