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Unit 6 Test
Test Description: Rocks and Minerals
Instructions: Answer all questions to get your test result.
1) Rocks are always a part of the rock cycle, even though they may stay on one part of it for millions of years. Which part of the rock cycle leads directly to the forming of igneous rocks, but not other types of rocks?
A
metamorphism
B
cooling
C
deposition
D
erosion
2) Fossils are often hardened remains of organisms that once lived, such as a bone or tooth. Which characteristic of metamorphic rock makes it unlikely for fossils to be found in this type of rock?
A
High temperatures and pressure destroy the fossils.
B
Tiny sediments build up in the fossils as they are deposited.
C
Fossils are broken apart during volcanic eruptions
D
Ocean water moving across the rock carries the fossils away.
3) How can a river play a role in the formation of new rock?
A
The river will melt the bits of rock into liquid magma
B
The river will break the bits of rock down into metamorphic rock
C
The river will smooth the bits of rock until they become igneous rock
D
The river will deposit the eroded bits of rock where they can form sedimentary rock.
4) What change in state takes place when magma turns into igneous rock?
A
liquid to solid
B
solid to gas
C
gas to solid
D
solid to liquid
5) Slate is a metamorphic rock that forms from shale, which is a sedimentary rock. Which of the following would be needed for slate to form from shale?
A
melting and solidification
B
heat and pressure
C
erosion and deposition
D
weathering
6) What action would happen just below the rift zone?
A
lava becoming solid
B
continental crust melting
C
subduction
D
magma flowing up
7) What can acid rain do to minerals and rocks in and on the ground?
A
Acid rain causes more erosion than normal rain does.
B
Acid rain causes less erosion than normal rain does.
C
Acid rain causes more weathering than normal rain does.
D
Acid rain causes less weathering than normal rain does.
8) Where is foliated metamorphic rock found?
A
none of the above
B
above the surface
C
at the surface
D
deep below the surface
9) How does basalt and granite form?
A
Basalt forms when clasts are cemented, granite forms when magma cools.
B
Basalt forms when lava cools, granite forms when clasts are cemented.
C
Basalt forms when lava cools, granite forms when magma cools.
D
Basalt forms when magma cools, granite forms when lava cools.
10) Conglomerate, sandstone, siltstone are all example of sedimentary rocks. What process of formation do all these rocks have in common?
A
solidification
B
condensation
C
evaporation
D
Cementation
11) 21. What is the definition of texture?
A
It describes the size, shapes, and positions of grains that make up the rock.
B
It describes the size, shapes, and color of grains that make up the rock.
C
It describes the size, shapes, and densities of grains that make up the rock.
D
It describes the size, shapes, and composition of grains that make up the rock.
12) If you had a sample of metamorphic rock how could you tell if the sample was foliated metamorphic rock?
A
The mineral grains in the sample are arranged in bands
B
The sample has a single solid color throughout
C
The sample is able to float in water
D
The minerals in the sample appear as dots of color
13) Minerals make up most of the rocks on earth’s surface. What are three changes that can cause minerals to form by metamorphism?
A
Temperature, melting, physical makeup
B
pressure, physical makeup, melting
C
Temperature, pressure, and chemical makeup
D
pressure, temperature, melting
14) Diamond is the hardest mineral on Mohs scale of hardness. What is the hardness of diamond on the scale?
A
10
B
9
C
3
D
6
15) The rock cycle describes how rock change. What conditions must be present for igneous rock to change into metamorphic rock? Name two ways that this could happen.
A
All of the above
B
Sedimentary and igneous rock must undergo chemical change due to heat and it can occur by contact metamorphism.
C
Sedimentary and igneous rock must undergo physical change due to heat and it can NOT occur by contact metamorphism.
D
None of the above
16) When geologists are studying Earth’s crust, they must be able to distinguish between minerals and nonminerals. List two mineral characteristics that describe a mineral by what it is made of.
A
shiny or dull
B
Inorganic substance and characteristic chemical composition
C
folliated or nonfolliated
D
color and luster
17) A scientist is investigation the properties of an unknown mineral. One such property is streak. Define streak and explain how the scientist can test the steak of the mineral.
A
The streak is the color of the mineral in powdered form.
B
None of the above
C
Streak can be investigated by rubbing mineral samples across a glazed tile.
D
Both of the above
18) All chemicals can be classified as elements or compounds. Describe how elements and compounds are related
A
Both are made of atoms
B
Both of the above
C
None of the above
D
Compounds include two or more elements.
*select an answer for all questions
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