Glencoe Physical Science with Earth Science, Florida Edition

Section 2: Igneous Rocks

Section Review Quiz

1.
What is the name of an intrusive igneous rock with a high silica content.
A)granite
B)rhyolite
C)basalt
D)gabbro
2.
What does a porphyritic texture tell you about how a rock formed?
A)the rock in intrusive
B)The rock is extrusive
C)The rock is not volcanic.
D)The rock formed at two different stages, both intrusively and extrusively.
3.
How is the vesicular texture of an igneous rock formed?
A)erosion
B)intrusive formation
C)release of gas
D)weak chemical bonds
4.
What are two common elements in basalt and gabbro?
A)magnesium and iron
B)iron and silica
C)silica and aluminum
D)oxygen and aluminum
5.
According to Bowen's Reaction Series, what mineral groups are most stable in high temperature regimes?
A)olivine and pyroxene
B)calcium-rich plagioclase and olivine
C)olivine and sodium-rich plagioclase
D)plagioclase and quartz
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