WorksheetsClassifying Rocks
Total questions: 25
Worksheet time: 17mins
Name
Class
Date
1.
This rock was another type of rock that was heated and compressed over time. What type of rock is this?
a)
Sedimentary
b)
Igneous
c)
Metamorphic
2.
This rock was formed by smaller pieces of rock that settled at the bottom of a lake millions of years ago. What type of rock is this?
a)
Sedimentary
b)
Igneous
c)
Metamorphic
3.
This rock started as lava that cooled and then was heated and compressed over time. What type of rock is this?
a)
Sedimentar
b)
Igneous
c)
Metamorphic
4.
This rock was formed by lots of fossils that settled on top of each other over time. What type of rock is this?
a)
Sedimentary
b)
Igneous
c)
Metamorphic
5.
This rock used to be the bottom of an ocean millions of years ago. What type of rock is this?
a)
Sedimentary
b)
Igneous
c)
Metamorphic
6.
This rock started as molten magma. What type of rock is this?
a)
Sedimentary
b)
Igneous
c)
Metamorphic
7.
This rock was layers of fossils that were buried, heated, and compressed over millions of years. What type of rock is this?
a)
Sedimentary
b)
Igneous
c)
Metamorphic
8.
Wind and water have eroded this rock to show the layers of sediment that were laid down millions of years ago. What type of rock is this?
a)
Sedimentary
b)
Igneous
c)
Metamorphic
9.
This rock was found near the mouth of a volcano. What type of rock is this?
a)
Sedimentary
b)
Igneous
c)
Metamorphic
10.
Igneous rock forms in regions where –
a)
rock is heated to melting point then cooled to a solid.
b)
metallic minerals are put under extreme pressure.
c)
a river deposits sand and mud over a long time.
d)
evidence of organisms is becoming fossilized.
11.
What is the primary process that turns sediments into sedimentary rocks?
a)
Organisms walking on layers of sediment, pressing particles together tightly
b)
Minerals within sediment, absorbing water, and undergoing a chemical reaction
c)
Upper layers of sediment, pressing down on lower layers of deposited sediment
d)
Magma cooling under the surface of Earth, crystallizing to form rock
12.
Metamorphic rocks are different from igneous and sedimentary rocks in that metamorphic rocks form -
a)
when liquid rock freezes into a solid.
b)
by magma rising from Earth’s core.
c)
from existing rock that has been changed.
d)
by layering minerals of different sizes.
13.
Scientists classify igneous, metamorphic, and sedimentary
rocks based on their –
rocks based on their –
a)
shape.
b)
color.
c)
formation.
d)
usefulness.
14.
What are the three types of rocks?
a)
Metamorphic, Sedimentary, Mineral
b)
Metamorphic, Sedimentary, Igneous
c)
Metamorphic, Igneous, Compaction
d)
Metamorphic, Igneous, Cementation
15.
Rock formed above ground with lava
a)
Sedimentary Rock
b)
Extrusive Igneous Rock
c)
Intrusive Igneous Rock
d)
Metamorphic Rock
16.
Rock formed by heat and pressure underground
a)
Sedimentary Rock
b)
Extrusive Igneous Rock
c)
Intrusive Igneous Rock
d)
Metamorphic Rock
17.
Only rock that contains fossils
a)
Sedimentary Rock
b)
Extrusive Igneous Rock
c)
Intrusive Igneous Rock
d)
Metamorphic Rock
18.
Rock with smooth, glassy surface
a)
Sedimentary Rock
b)
Extrusive Igneous Rock
c)
Intrusive Igneous Rock
d)
Metamorphic Rock
19.
Rock formed below ground by magma
a)
Sedimentary Rock
b)
Extrusive Igneous Rock
c)
Intrusive Igneous Rock
d)
Metamorphic Rock
20.
May have holes or bubbles in the rock
a)
Sedimentary Rock
b)
Extrusive Igneous Rock
c)
Intrusive Igneous Rock
d)
Metamorphic Rock
21.
May have bands or ribbons
a)
Sedimentary Rock
b)
Extrusive Igneous Rock
c)
Intrusive Igneous Rock
d)
Metamorphic Rock
22.
Has large visible crystals
a)
Sedimentary Rock
b)
Extrusive Igneous Rock
c)
Intrusive Igneous Rock
d)
Metamorphic Rock
23.
How do geologists classify rocks?
a)
by color
b)
by grain size
c)
by chemical composition
d)
by how they form
24.
Geologists might recognize a metamorphic rock by distorted, wavy layers because they were caused by -
a)
compaction and cementation.
b)
melting and crystallizing.
c)
erosion and deposition.
d)
pressure and heat.
25.
Igneous and sedimentary rocks could each be changed into metamorphic rock if they are changed by -
a)
weathering.
b)
pressure.
c)
organisms.
d)
cementation.
100 %
