1. Earth Materials
Igneous Rocks — Quiz
Test your understanding of igneous rocks with 5 practice questions.
Practice Questions
Question 1
Which igneous rock texture is characterized by large phenocrysts embedded in a fine-grained groundmass, indicating a two-stage cooling history?
Question 2
According to Bowen’s discontinuous reaction series, which mineral crystallizes first from a mafic magma?
Question 3
A dark, fine-grained igneous rock composed predominantly of pyroxene and plagioclase feldspar is classified as:
Question 4
Which magmatic process involves melting and incorporation of surrounding country rock into the magma, thereby changing its composition?
Question 5
Which extrusive igneous rock is the volcanic equivalent of the intrusive rock diorite?