Glencoe Physical Science with Earth Science

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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