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WorksheetsYear 8 Rocks Test
Total questions: 32
Worksheet time: 16mins
Name
Class
Date
1.
Rock that was melted and then cooled and hardened is called what?
a)
metamorphic rock
b)
clastic rock
c)
igneous rock
d)
sedimentary rock
2.
In order for a metamorphic rock to form, _______ is needed.
a)
melting and cooling
b)
weathering and erosion
c)
heat and pressure
d)
compaction and cementation
3.
This rock was found near the mouth of a volcano. What type of rock is this?
a)
Sedimentary
b)
Igneous
c)
Metamorphic
d)
Mineral
4.
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
d)
Mineral
5.
Igneous rocks that form as magma cools underground are called...
a)
extrusive
b)
intrusive
c)
felsic
d)
mafic
6.
Which process creates sediments?
a)
weathering and erosion
b)
cementation and compaction
c)
heat and pressure
d)
melting and cooling
7.
Which type of rock will form when sediments are compacted and cemented together?
a)
igneous
b)
metamorphic
c)
sedimentary
d)
magma
8.
Which of the following shows the correct order of events in the formation of sedimentary rock?
a)
weathering, erosion, deposition, cementation
b)
weathering, cementation, erosion, deposition
c)
erosion, cementation, deposition, weathering
d)
cementation, weathering, transportation, erosion
9.
Rocks are made out of minerals.
a)
True
b)
False
10.
Which type of rock would be likely to have fossils in it?
a)
lava
b)
igneous
c)
sedimentary
d)
metamorphic
11.
Molten rock below the Earth's surface.
a)
magma
b)
lava
c)
rock
d)
erosion
12.
A slow cooling igneous rock will have _____ crystals
a)
large
b)
small
c)
average
d)
black
13.
Geologists use the ... test to determine the hardness of a mineral.
a)
cleavage
b)
density
c)
scratch
14.
An igneous rock can become ______.
a)
metamorphic
b)
sedimentary
c)
igneous
d)
all of these
15.
The three groups of rocks are classified by
a)
How they form
b)
Color
c)
Grain size
d)
Chemical Composition
16.
The process in which sediment are fused or glued together.
a)
compaction
b)
deposition
c)
organic rock
d)
cementation
17.
The top layer of sediments in a sedimentary rocks is...
a)
The newest and youngest layer.
b)
The oldest layer.
c)
The only layer that is made from pebbles.
d)
The second layer of sediments.
18.
The parent rock of Gneiss is
a)
Marble
b)
Granite
c)
Obsidian
d)
Biotite
19.
Identify this Rock
a)
Pumice
b)
Rhyolite
c)
Scoria
d)
Vesicular Rhyolite
20.
Name this rock. It cools extremely fast.
a)
Pumice
b)
Granite
c)
Rhyolite
d)
Obsidian
21.
This rock was formed from limestone.
a)
Rock Salt
b)
Marble
c)
Quartzite
d)
Rock Gypsum
22.
This rock forms deep inside the Earth from felsic magma that cools slowly.
a)
Rhyolite
b)
Granite
c)
Diorite
d)
Pumice
23.
This is a low grade metamorphic rock, whose parent rock is shale.
a)
Marble
b)
Anthracite coal
c)
Slate
d)
Basalt
24.
This rock forms from sand-sized sediments in an aquatic environment.
a)
Siltstone
b)
Shale
c)
Breccia
d)
Sandstone
25.
This sedimentary rock is formed when rounded sediments are glued together.
a)
Breccia
b)
Conglomerate
c)
Sandstone
d)
Siltstone
26.
What is the name of this extrusive igneous rock?
a)
rhyolite
b)
basalt
c)
andesite
d)
pumice
27.
What is the process that picks up and moves weathered rocks?
a)
deposition
b)
landslide
c)
weathering
d)
erosion
28.
This type of weathering occurs when rocks weaken then break down due to chemical changes in the composition of the rock.
a)
mechanical weathering
b)
chemical weathering
c)
erosion weathering
d)
deposition
29.
How might a weathered mountain appear different than an unweathered mountain?
a)
Weathered mountain would be taller.
b)
Weathered mountain would be rounder and less jagged.
c)
Weathered mountain would be more jagged and less rounded.
d)
Weathered mountain would have no trees.
30.
How does freezing water cause the weathering of rocks? The freezing water—
a)
keeps the rocks in place
b)
makes the rocks last longer
c)
expands cracks and breaks rocks
d)
causes rocks to fall in landslides
31.
How do plants weather rocks?
a)
during photosynthesis
b)
when roots grow into cracks of rocks and expand the rock
c)
when the plant moves water from the roots to the leaves
32.
Carbonic acid is formed in nature when -
a)
Water dissolves particles of soil to form mud
b)
The oxygen molecules in water bond with minerals in rocks
c)
Water bonds with carbon dioxide in the air and/or soil
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