When two igneous rocks are considered "equivalent" to each other other, it means they have the same...

Question

BlackTom AI · Accepted Answer

To begin, consider the prompt: two igneous rocks being considered 'equivalent' to each other means they share a key characteristic in common that defines their equivalence. Now evaluate each option carefully.
Option 1: composition. This is the most accurate choice because igneous rocks are commonly classified by their mineral composition (felsic, intermediate, mafic, ultramafic) and the proportions of light and dark minerals. When two rocks are equivalent, they are alike in their chemical makeup and mineralogy, which directly ties to composition.
Option 2: place of origin. While origin can influence environment or context, rock equivalence in igneous petrology does not require identical geographic source. Two rocks from different locations can be compositionally the same and still be considered equivalent.
Option 3: age. Equality of age is not what defines equivalence in this context. Two igneous rocks can be formed at vastly different times yet be compositionally identical; hence age is not the defining criterion for equivalence.
Option 4: texture. Texture relates to grain size and the arrangement of minerals, often reflecting cooling history, but rocks with similar textures can have different compositions. Therefore texture alone does not establish equivalence between igneous rocks.
In summary, the defining trait that makes two igneous rocks equivalent is their composition, since composition encapsulates the mineral and chemical identity that classifies and distinguishes igneous rocks from one another.

FA25: GEOL-103 Sec 02 - Earth Systems Quiz 1.2: Igneous Rocks (Due 9/23)

When two igneous rocks are considered "equivalent" to each other other, it means they have the same...

View Explanation

Log in for full answers

Similar Questions

Rocks are composed primarily of minerals.

In a consumer society, many adults channel creativity into buying things

Economic stress and unpredictable times have resulted in a booming industry for self-help products

People born without creativity never can develop it

A product has a selling price of $20, a contribution margin ratio of 40% and fixed cost of $120,000. To make a profit of $30,000. The number of units that must be sold is: Type the number without $ and a comma. Eg: 20000

Which of the following statement regarding cost is correct:

Under the assumptions used in cost-volume-profit analysis, as the activity increases:

The CVP and break-even analysis are supported by a range of important assumptions. Which of the following is not an assumption of the CVP:

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