WorksheetsIgneous Rocks
Total questions: 16
Worksheet time: 8mins
If this magma cools and solidifies underground, it will become
intrusive igneous
extrusive igneous
sedimentary
metamorphic
Which would produce extrusive igneous rocks?
Magma
Lava
Which would produce intrusive igneous rocks?
Magma
Lava
slow cooling underground results in ____
large mineral grains
small mineral grains
glassy texture
gas pockest
this rock cooled and solidified
quickly, on the surface
quickly, in the air
rapidly, in water
slowly, underground
this lava will cool ______on the surface
slowly
quickly
the rocks forming here will be classified as...
extrusive igneous
intrusive igneous
fine-grained
coarse-grained
glassy
vesicular
Which describes the formation of gold deposits in the Sierra Nevada?
heat and pressure exerted on course-grained metamorphic rock
heat and pressure compacted carbonized material
mineral deposited by hydrothermal solutions in quartz veins
highly viscous magma cooled quickly at Earth's surface
Diamonds are sometimes found in igneous intrusions known as Kimberlites
True
False
This igneous rock is
basalt
obsidian
granite
pumice
This igneous rock is
obsidian
basalt
pumice
granite
How are igneous rocks classified?
origin, texture and mineral composition
origin, color and texture
texture, color, and mineral composition
by their grains
As the water content of rock increases, the melting point ______.
first increases, then decreases
remains the same
decreases
increases
Why does pumice, an igneous rock, have holes?
It forms from gas-rich lava.
It forms deep beneath Earth's surface.
It forms from magma that is rich in silica.
