Metamorphic grade refers to which of the following? Select the one best answer.

Question

BlackTom AI · Accepted Answer

To tackle this question, I’ll evaluate what metamorphic grade means and then test each option against that definition.
Option 1: 'the geographic location of the rock' — Metamorphic grade is not about where the rock is found on a map. Location tells us about geography, not the intensity of metamorphism, so this is not a valid descriptor of metamorphic grade.
Option 2: 'how good the rock is for use as a building material, such as a roofing tile' — Building suitability is a practical property related to strength, durability, and aesthetics, but metamorphic grade specifically describes the degree of metamorphism, not commercial applicability. This makes the option incorrect.
Option 3: 'the chemical composition of the rock' — While mineralogy and chemistry change with metamorphism, metamorphic grade is not defined strictly by chemical composition alone; it’s about the degree of metamorphism indicated by textures and index minerals formed at certain pressure–temperature conditions. So this option is misleading and incorrect as a definition of grade.
Option 4: 'the color of the metamorphic rock' — Color can vary due to mineral content and other factors, but grade relies on the intensity of metamorphic conditions and the resulting mineral assemblages, not just color. Therefore, this choice does not capture the concept of metamorphic grade.
Option 5: 'the magnitude of the change in pressure and/or temperature the rock experienced' — This precisely describes metamorphic grade: it reflects how intensely the rock was metamorphosed, i.e., the degree of pressure and temperature change it underwent, which governs mineral reactions and textural changes. This aligns with standard definitions in metamorphic petrology.
Using these evaluations, the only option that aligns with the accepted definition of metamorphic grade is the one describing the magnitude of pressure and/or temperature change the rock experienced. The other choices relate to ancillary properties or misconceptions rather than the formal notion of grade.

Metamorphic grade refers to which of the following? Select the one best answer.Single choice

Similar Questions

Which of the following changes do not typically occur in rock as it is subjected to metamorphism? (2 answers are correct)

Only sedimentary and igneous rocks can be metamorphosed.

Metamorphic rocks are rocks that have changed by:

The implementation and loading phase of the Database Life Cycle (DBLC) involves _____.

Which of the following parameters is used to determine the concentration of protein in a spectrophotometer?

What are the units of absorbance?

What is the concentration of protein in the stock solution of BSA used for the standard curve?

More Practical Tools for Students Powered by AI Study Helper

Homework AI Solver

Stylized AI Paper Writer

Plagiarism Checker Assistant

Citation AI Academic Writing Tool

In-Class Translation Assistant

AI Note Generator

AI Quiz Answers

Past Exam Questions from University Test Bank

Smart Practice Assistant

Adaptive Practice

Making Your Study Simpler