WorksheetsRocks
Total questions: 8
Worksheet time: 4mins
Name
Class
Date
1.
Which rock group makes up most of Earth's crust, and what is the percentage?
a)
Igneous 65%
b)
Metamorphic 27%
c)
Basalt 66%
2.
What kind of rocks make up most of the igneous rock?
a)
Basalt
b)
Granite
c)
Rhyolite
d)
Pegmatite
3.
From your knowledge of Earth's crust, where would you most likely find igneous rocks like basalt?
a)
Within mountain ranges
b)
In my backyard
c)
On the ocean floor
d)
Sandy Beaches
4.
Which rock group makes up least of Earth's crust and what is the percent?
a)
igneous 65%
b)
metamorphic 27%
c)
sedimentary 8%
5.
Which rock makes up the greatest part of metamorphic rocks and what is the percentage?
a)
Shale and silt stone 70%
b)
Schist 19%`
c)
Gneiss 78%
6.
About how many rock forming minerals make up most of the rocks of Earth's crust?
a)
2
b)
20
c)
200
d)
2000
7.
What three things do geologists observe when studying a rock sample?
a)
color; cleavage; texture
b)
color; texture; streak
c)
color; mineral composition; texture
d)
color; origin; texture
8.
How do igneous rocks form?
a)
small particles of rocks are pressed and cemented together
b)
when a rock is changed by heat or pressure
c)
From the cooling of magma or lava
100 %
