WorksheetsIgneous rocks
Total questions: 20
Worksheet time: 10mins
Where is magma found?
inside Earth
on the Earth's surface
Where is lava found?
inside Earth
on the surface of the Earth
How do extrusive igneous rocks form?
from lava that erupted onto Earth's surface
from magma that hardened beneath Earth's surface
How do intrusive igneous rocks form?
from lava that erupted onto Earth's surface
from magma that hardened beneath Earth's surface
The process by which igneous rocks are formed _?_.
heat and pressure deep underneath earth's surface
melting and cooling of magma
compaction and cementation of sediments
Which of the following igneous rocks is this?
rhyolite
obsidian
basalt
scoria
Which of the following is NOT a way to describe a rocks texture
Grain size
Grain shape
Grain pattern
Grain composition
Which type of igneous rocks form below Earth's surface?
Intrusive
Extrusive
Geologic
Volcanic
Which type of igneous rock forms when lava solidifies after it reaches the surface?
Intrusive
Extrusive
Geologic
Plutonic
Magma that forms dark colored rocks and has a high crystallization temperature is called ________________
Mafic
Felsic
Granitic
Silicate
Magma that forms lighter colored rocks and has a high silicon content is called ____________.
Mafic
Basaltic
Felsic
Silicate
____________ refers to the size, shape, and distribution of the crystals or grains that make up the rock
Smoothness
Texture
Color
Hardness
Rocks that have a spongy appearance from the gasses in the lava when the rock formed has a _____________ texture
Porphyritic
Vesicular
Bubbly
Phenocryst
Is obsidian intrusive or extrusive?
intrusive
extrusive
neither
What is another word for Intrusive
volcanic
plutonic
vesicular
non-vesicular
what is another word for extrusive
non-vesicular
plutonic
volcanic
vesicular
which rock is the only mono-mineralic Igneous rock?
Dunite
obsidion
dolostone
basalt
what color is dunite
red
orange
yellow
green
blue
Use your reference table. What composition does granite have
Very Coarse, Non-Vesicular
Coarse, Non-Vesicular
Fine, Vesicular
Very Fine, Non-Vesicular
