40
practice examMultiple Choice

Practice Exam

Question 40 • Earth and Space Science

What general trend does Bowen's Reaction Series show about the relationship between temperature and the order in which minerals crystallize from magma?

Answer
A
Minerals that form at higher temperatures crystallize first and are typically darker in color.
B
Minerals that form at higher temperatures crystallize last, after the magma cools completely.
C
All minerals crystallize at the same temperature regardless of composition.
D
Minerals that form at lower temperatures crystallize first and are typically iron-rich.

Explanation

Bowen’s Reaction Series shows that minerals crystallize in a sequence as magma cools: high-temperature minerals form first, while lower-temperature minerals form later. Many of the early-forming minerals are rich in iron and magnesium and are typically darker in color, so choice A describes the general trend.

AI-written and checked against the verified answer.

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