All of the following are examples of descriptive classifications except
A) igneous vs. sedimentary vs. metamorphic rocks.
B) silica rich vs. silica poor vs. intermediate rocks.
C) dark-colored vs. medium-colored vs. light-colored rocks.
D) carbonate vs. mixed-carbonate vs. non-carbonate rocks.

Question

Quizplus · Accepted Answer

Descriptive classifications typically categorize based on observable characteristics or composition. Choices B, C, and D are examples of such classifications based on composition or color. Choice A, however, classifies rocks based on their formation process (igneous, sedimentary, metamorphic), which is not merely descriptive but involves understanding the origin and history of the rocks.

All of the Following Are Examples of Descriptive Classifications Except