WorksheetsIgneous Rock
Total questions: 19
Worksheet time: 14mins
Name
Class
Date
1.
A natural mixture of minerals.
a)
erosion
b)
magma
c)
alloys
d)
rock
2.
What does Ignis mean?
a)
hot
b)
fire
c)
steam
d)
flame
3.
A type of rock that forms from the cooling of molten rock at or below the surface of the earth
a)
Igneous Rock
b)
Metamorphic Rock
c)
Sedimentary Rock
d)
chemical Rock
4.
Igneous rock that forms from lava on Earth's surface
a)
Organic Rock
b)
Intrusive Rock
c)
Clastic Rock
d)
Extrusive Rock
5.
Extrusive rocks that form quickly above the Earths surface have
a)
small crystals
b)
large crystals
c)
small and large crystals
d)
no crystals
6.
Igneous rock that forms when magma hardens beneath Earth's surface
a)
intrusive Rock
b)
compaction
c)
Chemical Rock
d)
Clastic Rock
7.
A slow cooling igneous rock will have _____ crystals
a)
large
b)
small
c)
average
d)
black
8.
One common use for the igneous rock granite is...
a)
building material
b)
cutting tools
c)
abrasion in polishing
d)
cement
9.
One common use for the igneous rock obsidian is...
a)
building material
b)
cutting tools
c)
abrasion in polishing
d)
cement
10.
What is the most common type of extrusive rock?
a)
basalt
b)
granite
c)
obsidian
d)
porphyry
11.
How do coarse-grained igneous rocks form?
a)
from sedimentary rocks changed under pressure
b)
from large rock particles cemented together
c)
from rapidly cooling lava
d)
from slowly cooling magma
12.
Extrusive forms _________crystals
a)
small
b)
large
13.
The process by which igneous rocks are formed...
a)
heat and pressure deep underneath earth's surface
b)
melting and cooling of magma
c)
compaction and cementation of sediments
14.
Coarse or Fine
a)
coarse
b)
fine
15.
Stone Mountain is mainly composed of granite. What does that mean about its origin?
a)
It formed on Earth's surface.
b)
It formed below and then on Earth's surface.
c)
It formed on then below Earth's surface.
d)
It formed below Earth's surface.
16.
What do basalt, pumice, and obsidian have in common?
a)
They form on Earth's surface from the cooling of lava.
b)
They are fine-grained.
c)
Their crystal grains are small and hard to see.
d)
They have all of these things in common.
17.
What statement is true about the sample of diorite shown?
a)
Diorite is an extrusive igneous rock.
b)
Diorite is coarse-grained because its crystals are large and easy to see.
c)
Diorite is fine-grained because its crystals are small and hard to see.
d)
Diorite is a mineral because of its crystal structure.
18.
What are the two most abundant igneous rocks in Earth's crust? (HINT: They are the two most common igneous rocks!)
a)
pegmatite and pumice
b)
gabbro and obsidian
c)
granite and basalt
d)
halite and gold
19.
Two ways to describe igneous rocks are _____
a)
Intrusive and Extrusive
b)
Gray and White
c)
Foliated and Non-Foliated
d)
Clastic and Biochemical
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