Unit 6 Test Question Preview (ID: 29536)
Rocks And Minerals.
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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) erosion
b) cooling
c) deposition
d) metamorphism
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) Fossils are broken apart during volcanic eruptions
b) High temperatures and pressure destroy the fossils.
c) Tiny sediments build up in the fossils as they are deposited.
d) Ocean water moving across the rock carries the fossils away.
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.
What change in state takes place when magma turns into igneous rock?
a) gas to solid
b) solid to gas
c) solid to liquid
d) liquid to solid
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) weathering
b) heat and pressure
c) erosion and deposition
d) melting and solidification
What action would happen just below the rift zone?
a) subduction
b) magma flowing up
c) lava becoming solid
d) continental crust melting
What can acid rain do to minerals and rocks in and on the ground?
a) Acid rain causes less erosion than normal rain does.
b) Acid rain causes more erosion than normal rain does.
c) Acid rain causes less weathering than normal rain does.
d) Acid rain causes more weathering than normal rain does.
Where is foliated metamorphic rock found?
a) deep below the surface
b) at the surface
c) above the surface
d) none of the above
How does basalt and granite form?
a) Basalt forms when lava cools, granite forms when magma cools.
b) Basalt forms when magma cools, granite forms when lava cools.
c) Basalt forms when lava cools, granite forms when clasts are cemented.
d) Basalt forms when clasts are cemented, granite forms when magma cools.
Conglomerate, sandstone, siltstone are all example of sedimentary rocks. What process of formation do all these rocks have in common?
a) evaporation
b) Cementation
c) solidification
d) condensation
21. What is the definition of texture?
a) It describes the size, shapes, and color of grains that make up the rock.
b) It describes the size, shapes, and densities of grains that make up the rock.
c) It describes the size, shapes, and positions of grains that make up the rock.
d) It describes the size, shapes, and composition of grains that make up the rock.
If you had a sample of metamorphic rock how could you tell if the sample was foliated metamorphic rock?
a) The sample is able to float in water
b) The sample has a single solid color throughout
c) The minerals in the sample appear as dots of color
d) The mineral grains in the sample are arranged in bands
Minerals make up most of the rocks on earth’s surface. What are three changes that can cause minerals to form by metamorphism?
a) pressure, temperature, melting
b) pressure, physical makeup, melting
c) Temperature, melting, physical makeup
d) Temperature, pressure, and chemical makeup
Diamond is the hardest mineral on Mohs scale of hardness. What is the hardness of diamond on the scale?
a) 10
b) 9
c) 6
d) 3
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) Sedimentary and igneous rock must undergo physical change due to heat and it can NOT occur by contact metamorphism.
b) Sedimentary and igneous rock must undergo chemical change due to heat and it can occur by contact metamorphism.
c) None of the above
d) All of the above
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) folliated or nonfolliated
b) shiny or dull
c) Inorganic substance and characteristic chemical composition
d) color and luster
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) Streak can be investigated by rubbing mineral samples across a glazed tile.
c) None of the above
d) Both of the above
All chemicals can be classified as elements or compounds. Describe how elements and compounds are related
a) Both are made of atoms
b) Compounds include two or more elements.
c) Both of the above
d) None of the above
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