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Worksheets6.10B Classifying Rocks and 6.6C Minerals
Total questions: 38
Worksheet time: 29mins
Name
Class
Date
1.
Using the chart below of the Mohs Hardness Scale, answer the following question. A certain mineral sample cannot scratch apatite, but apatite can scratch the sample. Which of the following is most likely the mineral’s hardness?
a)
4
b)
6
c)
8
d)
10
2.
Information on several minerals is given in this table. If one were to observe samples of the minerals from the table, which two would appear similar in color, but could be distinguished, one from the other, using a streak test?
a)
Hematite and Stantinite
b)
Chalcopyrite and Platinum
c)
Acanthite and Stantinite
d)
Chalcopyrite and Biotite
3.
The table provides information on four minerals. A mineral sample has a metallic luster, is black in color, and has a hardness of 6. Which of the minerals in the table is a reasonable identification for this mineral sample?
a)
Pyrite
b)
Graphite
c)
Hematite
d)
Calcite
4.
A student was given two minerals of the same color. What physical property could be tested to help the student determine the identification of the two minerals?
a)
Relative size
b)
Mass in grams
c)
Volume in mL
d)
Streak color
5.
This table provides information on two minerals. Which property would allow a geologist to distinguish a sample of feldspar from rose quartz?
a)
Color
b)
luster
c)
hardness
d)
streak
6.
The table here provides the hardness, on the Mohs Scale, of several common objects. In the field, a student finds a mineral and discovers that the mineral will leave a scratch on a copper penny, but won’t scratch a piece of glass. If the student is certain that it is one of the four minerals on the second table, which one is the most reasonable identification?
a)
Gypsum
b)
Fluorite
c)
Othoclase
d)
Topaz
7.
The table provides information on both pyrite and gold. Pyrite is sometimes confused with gold. Some of the properties listed could help someone distinguish between pyrite and gold. Gold will be the only mineral that has which of the following properties?
a)
Yellow color
b)
Metallic luster
c)
Hardness of 3
d)
Black streak
8.
Physical properties of minerals such as color, hardness, luster, and streak are used to determine what about a mineral?
a)
Identity
b)
Mass
c)
Age
d)
Location
9.
Scientists test for the hardness of a mineral by doing which of the following?
a)
Measuring the mass of the mineral, and comparing it against other minerals
b)
Observing how light reflects off the mineral and how the mineral looks as a result
c)
Observing the color of a mineral and comparing it against other minerals
d)
Scratching the mineral against other substances of known hardness
10.
One test of a mineral is the streak test in which what property is determined?
a)
The color of powder left behind when the mineral is rubbed on a surface
b)
The amount of pore space in the mineral as measured by submerging it in water
c)
The conductivity of a mineral, determined by attaching it to an electric circuit
d)
The wavelength of light that are refracted when light passes through the mineral
11.
Which of the following best describes luster?
a)
The mass of an object
b)
The way light reflects off an object
c)
The texture of an object
d)
The density of an object
12.
Refer to the Mohs Hardness Scale. A mineral with a hardness of 7 can scratch -
a)
orthoclase feldspar, but cannot scratch talc
b)
calcite, but cannot scratch apatite.
c)
topaz, but cannot scratch fluorite
d)
gypsum, but cannot scratch corundum
13.
How are minerals identified using luster?
a)
Minerals are scratched against each other. The mineral that does the scratching has the most luster.
b)
They are rubbed on unglazed tile. The powder left behind is the luster.
c)
Using a balance, the mass is recorded. Which ever mineral has the largest mass has the most luster.
d)
The way that light reflects off a mineral determines the luster of the mineral.
14.
Information on several minerals is given in this table. If one were to observe samples of the minerals from the table, which two would appear similar in color, but could be distinguished, one from the other, using a streak test?
a)
Hematite and alabandite
b)
Chalcopyrite and platinum
c)
Alabandite and chalcopyrite
d)
Citrine and biotite
15.
Use the chart below to answer the following question. A student is given the chart above and is told to identify an unknown mineral. The student observes that the mineral has a glassy luster and a hardness less than 3. What is the identity of the mineral?
a)
Actmite
b)
Cobaltite
c)
Jadeite
d)
Talc
16.
Use the Mohs Hardness Scale below. Which mineral can scratch fluorite, but is scratched by orthoclase feldspar?
a)
Calcite
b)
Talc
c)
Apatite
d)
Diamond
17.
Sedimentary rocks can have layers of different colors. This occurs when –
a)
molten rock seeps into large cracks underground.
b)
extreme pressure causes minerals to separate
c)
different minerals are deposited at different times.
d)
seasonal patterns change the rate of erosion.
18.
Which of the following is one of the final processes in the formation of sedimentary rock?
a)
Melting
b)
Cementation
c)
Flowing
d)
Separation
19.
The presence of igneous rocks might be evidence of -
a)
organisms.
b)
deposition.
c)
coal.
d)
volcanoes.
20.
Metamorphic rock forms where any kind of rock –
a)
is crystalized after being liquid rock.
b)
contains fossils of marine organisms
c)
is changed by the extreme heat and pressure.
d)
is composed of cemented sediment.
21.
In order to be classified as metamorphic, a rock must have –
a)
magma cooling underground.
b)
changed with heat and pressure.
c)
compacted sediment into layers.
d)
formed in less than 100 years.
22.
Which of the following features of a rock would classify it as definitely an igneous rock?
a)
Began its formation process millions of year in the past
b)
Created through slow, naturally occurring processes
c)
Formed when minerals were heated, then cooled
d)
Resulted from liquid rock being ejected from a volcano
23.
Rocks are classified by -
a)
how they were formed.
b)
when they were formed.
c)
where they were formed.
d)
their color when formed
24.
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
25.
The interlocking crystals of an igneous rock help to classify it since these crystals are evidence of how the rock formed. The crystals are a result of –
a)
quartz coming out of solution.
b)
particles forming layers.
c)
chemical reactions of minerals.
d)
melted rock that cooled.
26.
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.
27.
Which of the following processes is one of the early steps in the formation of sedimentary rock?
a)
Weathering of existing rock
b)
Crystallization of molten minerals
c)
Melting of rock in volcanoes
d)
Chemical reactions that produce heat
28.
Igneous rock can be changed into sedimentary rock when igneous rocks –
a)
that form mountains get pushed together.
b)
are weathered and the fragments deposited.
c)
melt to form layers of different minerals.
d)
put out by volcanoes create new land.
29.
Igneous rocks and metamorphic rocks have similar formation, in that they both –
a)
require extreme heat.
b)
always form from sediments.
c)
cool to form distinct layers.
d)
often contain fossil organisms.
30.
In order for a rock to be classified as igneous, what must have happened during its formation?
a)
Solid rock changing under pressure
b)
Liquid rock changing its physical state
c)
Small rocks becoming cemented together
d)
Layered rock breaking into smaller pieces
31.
Sedimentary rock can be changed into igneous rock if sediments are –
a)
compacted.
b)
deposited.
c)
weathered.
d)
melted.
32.
Igneous and sedimentary rocks could each be changed into metamorphic rock if they are changed by -
a)
weathering.
b)
organisms.
c)
pressure.
d)
cementation.
33.
Which of the following processes might be one of the first steps in the formation of sedimentary rock?
a)
Glaciers breaking down rock
b)
Liquid magma cooling and hardening
c)
Rock melting deep underground
d)
Minerals changing due to pressure
34.
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.
35.
Sedimentary rock can contain evidence of life because of all the following are properties of sedimentary rock EXCEPT -
a)
it can be made from mud.
b)
it is created under the ocean.
c)
it is formed by melting rock.
d)
it can contain organic material.
36.
Sedimentary rocks often contain horizontal layers because they are formed by the -
a)
deposition of sediment.
b)
movement of tectonic plates.
c)
heating of organisms.
d)
cooling of melted rock.
37.
Sedimentary rock can be changed into metamorphic rock if it is -
a)
weathered and eroded by ocean waves.
b)
exposed to extreme heat underground.
c)
broken down by heating and cooling.
d)
cemented with minerals carried in water.
38.
All of the following processes are the ones that lead directly to the formation of sedimentary rock EXCEPT -
a)
deposition of rock fragments.
b)
freezing of water in cracks in rock.
c)
melting of rock deep underground.
d)
movement of wind that carries earth material.
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