Rock Assessment Level 4

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  • 1/73 Questions

    Igneous rocks that form_____________ the surface are  intrusive.

    • Above
    • Below
    • On
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About This Quiz

Rock Assessment Level 4 explores the properties and formation processes of rocks. It assesses understanding of the rock cycle, types of rocks, and geological phenomena, enhancing learners' comprehension of Earth's dynamic systems.

Rock Assessment Level 4 - Quiz

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  • 2. 
    The figure below shows that the processes involved in the rock cycle include all of the following EXCEPT - ProProfs

    The figure below shows that the processes involved in the rock cycle include all of the following EXCEPT

    • Condensation

    • Erosion

    • Weathering

    • Compaction

    Correct Answer
    A. Condensation
    Explanation
    The rock cycle is a continuous process that involves the transformation of rocks from one type to another over time. It includes processes such as weathering, erosion, and compaction. However, condensation is not a part of the rock cycle. Condensation is the process by which water vapor in the air turns into liquid water, forming clouds and precipitation. While water can play a role in the weathering and erosion of rocks, condensation itself does not directly contribute to the transformation of rocks in the rock cycle.

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  • 3. 
     The figure below shows that sedimentary rocks are changed to sediments by ________________. - ProProfs

     The figure below shows that sedimentary rocks are changed to sediments by ________________.

    • Compaction

    • Weathering and erosion

    • Cementation

    • Heat and pressure

    Correct Answer
    A. Weathering and erosion
    Explanation
    Weathering and erosion are the processes by which sedimentary rocks are broken down into smaller particles and transported to new locations. Weathering refers to the physical and chemical breakdown of rocks, while erosion involves the movement of these weathered particles by wind, water, or ice. Therefore, weathering and erosion are responsible for the transformation of sedimentary rocks into sediments.

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  • 4. 

    Igneous rocks form from ____________ when it cools.

    • Magma

    • Lava

    • Neither magma or lava

    • Both magma and lava

    Correct Answer
    A. Both magma and lava
    Explanation
    Igneous rocks form from both magma and lava when it cools. Magma is molten rock below the Earth's surface, while lava is magma that reaches the Earth's surface. As magma or lava cools, it solidifies and crystallizes, forming igneous rocks. Therefore, both magma and lava are involved in the formation of igneous rocks.

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  • 5. 

    Foliated rocks are distinguished by ______________

    • Layers

    • Lack of layers

    • Large mineral grains

    • Air holes

    Correct Answer
    A. Layers
    Explanation
    Foliated rocks are distinguished by layers. This means that these rocks have a banded or striped appearance due to the presence of parallel layers or bands of minerals. These layers are formed through the process of metamorphism, where pressure and heat cause the minerals in the rock to align and form distinct layers. This characteristic makes it easier to identify and classify foliated rocks compared to non-foliated rocks, which lack these layers.

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  • 6. 

    Lava that cools quickly forms ____________ rock.

    • Extrusive metamorphic

    • Extrusive igneous

    • Intrusive metamorphic

    • Intrusive igneous

    Correct Answer
    A. Extrusive igneous
    Explanation
    Lava that cools quickly forms extrusive igneous rock. When lava erupts from a volcano and reaches the Earth's surface, it cools rapidly due to exposure to the cooler air or water. This rapid cooling prevents the growth of large crystals, resulting in fine-grained or glassy textures. These characteristics are typical of extrusive igneous rocks, such as basalt or obsidian, which are formed from solidified lava flows or volcanic ash.

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  • 7. 

    All the following conditions in the Earth can cause metamorphic rocks to form except _______________.

    • Exposure to air

    • The presence of hot, watery fluids

    • Heat

    • Pressure

    Correct Answer
    A. Exposure to air
    Explanation
    Metamorphic rocks are formed due to the combination of heat and pressure acting on existing rocks. This process causes the minerals in the rocks to recrystallize and rearrange, resulting in the formation of metamorphic rocks. Exposure to air alone does not cause metamorphic rocks to form. While air may contribute to weathering and erosion, it does not play a direct role in the metamorphic process. Therefore, exposure to air is not a condition that can cause metamorphic rocks to form.

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  • 8. 

    Quartz is a mineral, granite is  __________________.

    • Also a mineral

    • A rock

    • A gem

    • An ore

    Correct Answer
    A. A rock
    Explanation
    Granite is a rock because it is a solid, naturally occurring substance made up of various minerals. Unlike minerals, rocks are composed of multiple minerals and can have a variety of textures and colors. Granite specifically is a type of igneous rock that forms from the slow crystallization of magma deep beneath the Earth's surface. It is commonly used in construction and as a decorative stone due to its durability and attractive appearance.

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  • 9. 

    The crystals that form in slowly cooled magma produce _______ mineral grains.

    • Tiny

    • Invisible

    • Fine-grained

    • Large

    Correct Answer
    A. Large
    Explanation
    The crystals that form in slowly cooled magma have enough time to grow and develop, resulting in larger mineral grains. This is because slower cooling allows for more diffusion of ions and molecules, leading to the formation of larger crystals.

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  • 10. 

    A detrital rock is named accordng to __________.

    • Its age

    • Its location

    • The shape and size of the sediments

    • The color of the sediments

    Correct Answer
    A. The shape and size of the sediments
    Explanation
    A detrital rock is named according to the shape and size of the sediments it contains. This is because the shape and size of the sediments can provide important clues about the processes that formed the rock and the environment in which it was deposited. For example, angular and poorly sorted sediments may indicate a nearby source and rapid deposition, while well-rounded and well-sorted sediments may suggest long-distance transport and slower deposition. Therefore, the shape and size of the sediments are key factors in classifying and identifying detrital rocks.

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  • 11. 

    Changes that take place in rocks never create or destroy __________.

    • Rocks

    • Crystals

    • Matter

    • Minerals

    Correct Answer
    A. Matter
    Explanation
    Changes that take place in rocks may involve physical or chemical processes, such as weathering, erosion, or metamorphism. However, these changes do not create or destroy matter. Matter is conserved in these processes, meaning that the atoms and molecules that make up rocks are rearranged or transformed, but the total amount of matter remains the same. Therefore, the correct answer is "matter."

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  • 12. 

    When lava cools at Earth's surface, _______ igneous rocks are formed. 

    • Extrusive

    • Intrusive

    • Detrital

    • Coarse-grained

    Correct Answer
    A. Extrusive
    Explanation
    When lava cools at Earth's surface, extrusive igneous rocks are formed. This is because extrusive rocks are formed from lava that is erupted onto the surface and cools quickly, resulting in small crystals or a glassy texture. In contrast, intrusive igneous rocks are formed when magma cools slowly beneath the Earth's surface, resulting in larger crystals. Detrital rocks are formed from the accumulation of sediment, and coarse-grained is a term used to describe the texture of rocks, not their formation process.

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  • 13. 

    When magma cools deep inside the Earth, __________________ igneous rocks are formed.

    • Extrusive

    • Fine-grained

    • Detrital

    • Intrusive

    Correct Answer
    A. Intrusive
    Explanation
    When magma cools deep inside the Earth, it solidifies slowly, allowing the crystals to grow and develop. This results in the formation of intrusive igneous rocks. These rocks have a coarse-grained texture due to the slow cooling process, which allows for larger mineral crystals to form.

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  • 14. 

    An igneous rock can form from _________magma.

    • Basaltic

    • Andesitic

    • Granitic

    • All of the possibilities listed with this question

    Correct Answer
    A. All of the possibilities listed with this question
    Explanation
    An igneous rock can form from any type of magma, including basaltic, andesitic, and granitic magma. The type of magma determines the composition and characteristics of the resulting igneous rock. Basaltic magma forms basalt, which is a dark-colored rock with a fine-grained texture. Andesitic magma forms andesite, which is a medium-colored rock with a medium-grained texture. Granitic magma forms granite, which is a light-colored rock with a coarse-grained texture. Therefore, all of the possibilities listed with this question are correct.

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  • 15. 

    Metamorphic rocks that show layers of dark minerals alternating with layers of light minerals are classified as

    • Nonfoliated

    • Extrusive

    • Foliated

    • Detrital

    Correct Answer
    A. Foliated
    Explanation
    Metamorphic rocks that show layers of dark minerals alternating with layers of light minerals are classified as foliated. This is because foliation refers to the parallel alignment of minerals within a rock, resulting in the formation of distinct layers or bands. In this case, the alternating layers of dark and light minerals indicate the presence of foliation, which is characteristic of certain metamorphic rocks like gneiss or schist. Nonfoliated rocks lack this layered structure, extrusive rocks are formed from volcanic activity, and detrital rocks are composed of fragments of pre-existing rocks.

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  • 16. 

    Sediments in sedimentary rocks are often ____________________.

    • Held together with natural cements

    • Formed when atoms of melted minerals rearrange themselves

    • Formed when lava erupts from a volcano

    • Formed by magma trapped below Earth's surface

    Correct Answer
    A. Held together with natural cements
    Explanation
    Sediments in sedimentary rocks are often held together with natural cements. This means that the individual particles or grains of sediment are bound together by natural substances that act as a glue. These cements can include minerals such as calcite or quartz, which precipitate out of water and fill the spaces between the sediment grains. Over time, these cements harden and solidify, creating a cohesive rock structure. This process is a key characteristic of sedimentary rocks and helps to differentiate them from other types of rocks.

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  • 17. 

    Sedimentary rocks formed from the remains of once living things are ________________.

    • Metamorphic

    • Detrital

    • Organic

    • Chemical

    Correct Answer
    A. Organic
    Explanation
    Sedimentary rocks formed from the remains of once living things are classified as organic. Organic sedimentary rocks, such as coal and limestone, are formed from the accumulation and compaction of plant and animal remains over time. These rocks contain organic materials, such as carbon, and exhibit characteristics that are distinct from other types of sedimentary rocks.

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  • 18. 

    Sedimentary rocks fromed from broken fragments of other rocks are _________________.

    • Chemical

    • Detrital

    • Organic

    • Basaltic

    Correct Answer
    A. Detrital
    Explanation
    Sedimentary rocks formed from broken fragments of other rocks are called detrital. Detrital sedimentary rocks are composed of particles that have been weathered and eroded from pre-existing rocks and then deposited and lithified. These rocks are made up of various sizes and shapes of rock fragments, such as sand, silt, and clay, which are transported and deposited by wind, water, or ice. Detrital sedimentary rocks include sandstone, shale, and conglomerate, among others.

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  • 19. 

    The process in which a rock is exposed to air, water, or ice and breaks into pieces

    • Compaction

    • Cementation

    • Weathering

    • Erosion

    Correct Answer
    A. Weathering
    Explanation
    Weathering is the correct answer because it refers to the process in which a rock is exposed to air, water, or ice and breaks into pieces. Weathering occurs due to various factors such as temperature changes, pressure, chemical reactions, and biological activity. These factors cause physical and chemical breakdown of rocks, leading to their disintegration and fragmentation. Weathering is an essential step in the overall process of erosion, as it prepares the rock material to be transported and deposited by agents like water, wind, or ice.

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  • 20. 

    The process in which minerals hold sediment together making a detrital sedimentary rock..

    • Compaction

    • Cementation

    • Weathering

    • Erosion

    Correct Answer
    A. Cementation
    Explanation
    Cementation is the correct answer because it is the process in which minerals act as a glue, binding sediment particles together to form a detrital sedimentary rock. During cementation, minerals precipitate out of groundwater and fill the spaces between the sediment grains, creating a solid rock. This process is essential in the formation of sedimentary rocks such as sandstone and conglomerate. Compaction, weathering, and erosion are also important processes in the formation of sedimentary rocks, but they do not specifically refer to the process of minerals binding sediment together.

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  • 21. 

    Sandstone is an example of a ___________________ rock.

    • Sedimentary

    • Igneous

    • Metamorphic

    Correct Answer
    A. Sedimentary
    Explanation
    Sandstone is an example of a sedimentary rock because it is formed from the accumulation and consolidation of sediments, such as sand, over time. Sedimentary rocks are formed through the processes of weathering, erosion, deposition, and lithification. Sandstone is composed mainly of sand-sized grains of mineral, rock, or organic material that have been compacted and cemented together. This process typically occurs in areas such as riverbeds, deserts, or coastal regions where there is a significant amount of sediment deposition.

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  • 22. 

    Dense, heavy, dark colored igneous rocks form from ______________ magma.

    • Andesitic

    • Basaltic

    • Granitic

    Correct Answer
    A. Basaltic
    Explanation
    Dense, heavy, dark colored igneous rocks form from basaltic magma. Basaltic magma has a higher iron and magnesium content, which gives the resulting rocks their dark color. These rocks are also denser and heavier compared to rocks formed from other types of magma, such as andesitic or granitic.

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  • 23. 
    The picture below is an example of a __________________ rock. - ProProfs

    The picture below is an example of a __________________ rock.

    • Igneous

    • Sedimentary

    • Metamorphic

    Correct Answer
    A. Sedimentary
    Explanation
    The picture shows a rock that has distinct layers or bands, which is a characteristic feature of sedimentary rocks. Sedimentary rocks are formed through the accumulation and compaction of sediments, such as sand, mud, and organic matter, over time. These sediments are often deposited in layers, which can be seen in the picture. Therefore, the correct answer is sedimentary.

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  • 24. 

    Limestone, rock salt, and chalk are all examples of ___________________ rock

    • Igneous

    • Sedimentary

    • Metamorphic

    Correct Answer
    A. Sedimentary
    Explanation
    Limestone, rock salt, and chalk are all examples of sedimentary rock because they are formed from the accumulation and compaction of sediments over time. Sedimentary rocks are typically composed of fragments of other rocks, minerals, or organic matter that have been weathered, transported, and deposited in layers. These layers then undergo lithification, which involves the processes of compaction and cementation, resulting in the formation of solid sedimentary rock.

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  • 25. 
    These samples are what  type of igneous rock? - ProProfs

    These samples are what  type of igneous rock?

    • Volcanic Glass

    • Intrusive

    • Detrital

    Correct Answer
    A. Volcanic Glass
    Explanation
    Volcanic glass is a type of igneous rock that forms when molten lava cools rapidly, preventing the formation of mineral crystals. This rapid cooling results in a non-crystalline, glassy texture. Volcanic glass is typically formed during volcanic eruptions when lava is ejected into the air and cools quickly upon exposure to the atmosphere. It is different from intrusive igneous rocks, which cool slowly beneath the Earth's surface, and detrital igneous rocks, which are composed of fragments of pre-existing rocks.

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  • 26. 
    This igneous was fast cooling. - ProProfs

    This igneous was fast cooling.

    • True

    • False

    Correct Answer
    A. False
    Explanation
    The given statement suggests that the igneous rock in question cooled quickly. However, the correct answer is False, indicating that the statement is not true. Therefore, the igneous rock did not cool quickly and likely cooled at a slower rate.

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  • 27. 
    This metamorphic rock is foliated. - ProProfs

    This metamorphic rock is foliated.

    • True

    • False

    Correct Answer
    A. True
    Explanation
    This metamorphic rock is foliated, meaning it has a layered or banded texture due to the alignment of mineral grains. Foliation occurs during the process of metamorphism, where heat and pressure cause the minerals in the rock to recrystallize and align in a preferred orientation. This alignment gives the rock its characteristic foliated appearance.

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  • 28. 
    This sedimentary rock is detrital. - ProProfs

    This sedimentary rock is detrital.

    • True

    • False

    Correct Answer
    A. True
    Explanation
    Detrital rocks are formed from the accumulation of sedimentary particles such as sand, silt, and clay. These particles are derived from the weathering and erosion of pre-existing rocks. Therefore, if a rock is described as detrital, it means that it is made up of these sedimentary particles. In this case, the given sedimentary rock is described as detrital, so the correct answer is true.

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  • 29. 
    Which type of sedimentary rock is pictured below? - ProProfs

    Which type of sedimentary rock is pictured below?

    • Chemical

    • Organic

    • Detrital

    Correct Answer
    A. Detrital
    Explanation
    The correct answer is Detrital. This type of sedimentary rock is formed from the accumulation of weathered fragments of rocks, minerals, and organic materials. It is composed of grains that have been transported and deposited by water, wind, or ice. Detrital rocks are commonly found in riverbeds, beaches, and deserts. They can be classified further based on the size and shape of the grains, such as sandstone, shale, and conglomerate.

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  • 30. 

    The molten material deep inside Earth from which igneous rocks form is called  __________

    • Magma

    • Lava

    • Neither magma or lava

    • Both magma and lava

    Correct Answer
    A. Magma
    Explanation
    Magma is the correct answer because it refers to the molten material found deep inside the Earth. This molten material eventually cools and solidifies to form igneous rocks. Lava, on the other hand, is magma that has reached the Earth's surface. Therefore, magma is the appropriate term to describe the molten material from which igneous rocks originate.

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  • 31. 

    A classification of metamorphic rocks would include whether they are

    • Chemical or organic

    • Intrusive or extrusive

    • Foliated or nonfoliated

    • Basaltic or granitic

    Correct Answer
    A. Foliated or nonfoliated
    Explanation
    The correct answer is "foliated or nonfoliated." This classification refers to the texture of metamorphic rocks. Foliated rocks have a layered or banded appearance due to the alignment of minerals, while nonfoliated rocks lack this layering. This classification is important because it provides information about the conditions and processes that the rock underwent during metamorphism.

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  • 32. 

    Sedimentary rocks are

    • Formed from magma

    • A type of foliated igneous rock

    • Formed because of changes in temperature and pressure, or the presence of hot watery fluids

    • Formed when loose material become pressed or cemented together or when minerals form from solutions

    Correct Answer
    A. Formed when loose material become pressed or cemented together or when minerals form from solutions
    Explanation
    Sedimentary rocks are formed when loose materials such as sediment, sand, and soil become compacted and cemented together over time. This process occurs through the deposition and accumulation of these materials, followed by the application of pressure and the precipitation of minerals from solutions, such as water. This process can happen in various environments, such as rivers, lakes, oceans, and even deserts. The loose materials undergo lithification, where they become solidified into sedimentary rock through compaction and cementation.

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  • 33. 

    Detrital rocks are ___________________.

    • Made form broken fragments of other rocks

    • Formed from magma

    • Deposited from solution

    • All the possible answers listed with this question

    Correct Answer
    A. Made form broken fragments of other rocks
    Explanation
    Detrital rocks are formed from broken fragments of other rocks. This process occurs through weathering and erosion, where larger rocks are broken down into smaller pieces called sediments. These sediments then undergo compaction and cementation, resulting in the formation of detrital rocks such as sandstone, shale, and conglomerate. This process is a key part of the rock cycle, where rocks are continuously broken down and reformed.

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  • 34. 

    A rock is always

    • Made of molten material

    • A mixture of minerals, organic matter, volcanic glass, or other materials

    • Formed by heat and pressure

    • Either igneous or sedimentary

    Correct Answer
    A. A mixture of minerals, organic matter, volcanic glass, or other materials
    Explanation
    The correct answer is "a mixture of minerals, organic matter, volcanic glass, or other materials." This answer is correct because rocks can be composed of various materials such as minerals, organic matter, volcanic glass, or a combination of these substances. Rocks are not always made of molten material, as some rocks can be formed through other processes such as sedimentation. Additionally, rocks can be either igneous or sedimentary, further supporting the idea that they are composed of a mixture of different materials.

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  • 35. 

    A kind of organic sedimentary rock

    • Marble

    • Slate

    • Limestone

    • Coal

    Correct Answer
    A. Coal
    Explanation
    Coal is a type of organic sedimentary rock that is formed from the remains of plants that lived and died millions of years ago. Over time, the plant material was buried and subjected to heat and pressure, resulting in the formation of coal. It is primarily composed of carbon, along with other elements such as hydrogen, sulfur, and oxygen. Coal is widely used as a fuel source for electricity generation and industrial processes due to its high carbon content and energy density.

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  • 36. 

    A kind of foliated metamorphic rock

    • Marble

    • Slate

    • Limestone

    • Coal

    Correct Answer
    A. Slate
    Explanation
    Slate is a type of foliated metamorphic rock that is formed from the metamorphism of shale or mudstone. It has a fine-grained texture and is characterized by its ability to split into thin, flat sheets. Slate is commonly used as a roofing material due to its durability and resistance to weathering. It is also used for flooring, blackboards, and billiard tables.

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  • 37. 

    The movement of weathered material.

    • Compaction

    • Cementation

    • Weathering

    • Erosion

    Correct Answer
    A. Erosion
    Explanation
    Erosion refers to the movement of weathered material, such as rocks, soil, or sediment, from one place to another. It is typically caused by natural forces like wind, water, or ice. These forces can wear away or transport the weathered material, reshaping the landscape over time. Compaction and cementation are processes that occur after erosion, where the sediment is compressed and solidified to form sedimentary rocks. Weathering, on the other hand, refers to the breakdown of rocks into smaller pieces due to various physical or chemical processes.

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  • 38. 

    Granite is an example of a ___________________ rock.

    • Sedimentary

    • Igneous

    • Metamorphic

    Correct Answer
    A. Igneous
    Explanation
    Granite is an example of an igneous rock because it is formed through the cooling and solidification of molten magma or lava. Igneous rocks are classified as either intrusive (formed underground) or extrusive (formed on the Earth's surface). Granite is an intrusive igneous rock that is composed mainly of quartz, feldspar, and mica. It has a coarse-grained texture and is commonly used in construction and as a decorative stone.

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  • 39. 

    Obidian is an example of a ___________________ rock.

    • Sedimentary

    • Igneous

    • Metamorphic

    Correct Answer
    A. Igneous
    Explanation
    Obsidian is a type of rock that is formed from the rapid cooling of lava. It is a volcanic glass and is classified as an igneous rock. Igneous rocks are formed through the solidification and crystallization of molten material, such as magma or lava. Obsidian is known for its smooth, glassy texture and is typically black or dark in color. It is commonly found in areas with volcanic activity and is often used in jewelry and as a cutting tool due to its sharp edges.

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  • 40. 

    Gneiss is an example of a ___________________ rock.

    • Sedimentary

    • Igneous

    • Metamorphic

    Correct Answer
    A. Metamorphic
    Explanation
    Gneiss is an example of a metamorphic rock because it is formed through the process of metamorphism, which involves the transformation of existing rocks under high temperatures and pressures. Gneiss is characterized by its banded appearance and the presence of minerals such as quartz, feldspar, and mica. This transformation occurs deep within the Earth's crust, resulting in the recrystallization of minerals and the development of distinct layers or bands in the rock.

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  • 41. 

    Limestone  is an example of a ___________________ rock.

    • Sedimentary

    • Igneous

    • Metamorphic

    Correct Answer
    A. Sedimentary
    Explanation
    Limestone is formed from the accumulation of sediment, such as shells, coral, and other organic materials, which are compacted and cemented together over time. This process is characteristic of sedimentary rocks, which are formed by the deposition and solidification of sediments. Therefore, limestone is an example of a sedimentary rock.

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  • 42. 

    Rocks that form from _________________ magma have mineral composition between between those of granitic and basaltic.  

    • Andesitic

    • Basaltic

    • Granitic

    Correct Answer
    A. Andesitic
    Explanation
    Andesitic rocks form from intermediate magma, which has a mineral composition that falls between granitic and basaltic rocks. This means that andesitic rocks have a combination of minerals found in both granitic and basaltic rocks.

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  • 43. 

    Obsidian, basalt, and diorite are all examples of ___________________ rock

    • Igneous

    • Sedimentary

    • Metamorphic

    Correct Answer
    A. Igneous
    Explanation
    Obsidian, basalt, and diorite are all examples of igneous rock because they are formed from the solidification of molten material, such as lava or magma. Igneous rocks are characterized by their crystalline texture and can be either intrusive (formed inside the Earth's crust) or extrusive (formed on the Earth's surface). These rocks are typically formed through the cooling and solidification of molten material, which allows for the formation of interlocking mineral crystals.

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  • 44. 
    The rock cycle in the figure below indicates that each type of rock can - ProProfs

    The rock cycle in the figure below indicates that each type of rock can

    • Provide materials that make rocks

    • Form other rocks

    • Be changed by forces at the Earth's surface

    • All the possible answers listed in this question

    Correct Answer
    A. All the possible answers listed in this question
    Explanation
    The rock cycle is a continuous process where rocks are constantly being formed, broken down, and reformed. Each type of rock can provide materials that make rocks, as rocks can be broken down into smaller particles or sediments that can then be compacted and cemented together to form new rocks. Additionally, rocks can form other rocks through processes such as cooling and solidification of magma or the compaction and cementation of sediments. Lastly, rocks can be changed by forces at the Earth's surface, such as weathering and erosion, which break down rocks and reshape them over time. Therefore, all the possible answers listed in this question are correct.

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  • 45. 

    Basaltic igneous rocks are ___________.

    • Light colored

    • Lower in density than granitic rocks

    • Rich in iron and magnesium

    • Silica rich

    Correct Answer
    A. Rich in iron and magnesium
    Explanation
    Basaltic igneous rocks are rich in iron and magnesium. This is because basaltic rocks are formed from the solidification of magma that has a higher content of iron and magnesium compared to other elements. This composition gives basaltic rocks their characteristic dark color and higher density compared to other types of igneous rocks.

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  • 46. 

    Granitic igneous rocks are all of the following EXCEPT

    • Light colored

    • Lower in density than basaltic rocks

    • High in silica content

    • High in iron content

    Correct Answer
    A. High in iron content
    Explanation
    Granitic igneous rocks are not high in iron content. They are typically light colored, lower in density than basaltic rocks, and high in silica content. Iron-rich igneous rocks are referred to as mafic rocks, such as basalt, which are dark colored and higher in density compared to granitic rocks.

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  • 47. 

    The process in which pressure from the upper layers of sediment pushes down on the lower layers, causing the sediments to stick togethjer and form solid rock.

    • Compaction

    • Cementation

    • Weathering

    • Erosion

    Correct Answer
    A. Compaction
    Explanation
    Compaction is the correct answer because it refers to the process of pressure from upper layers of sediment pushing down on lower layers, causing the sediments to stick together and form solid rock. This process involves the squeezing and compacting of sediment particles, reducing the pore spaces between them and increasing their density. Cementation, on the other hand, is the process of minerals precipitating and filling in the pore spaces between sediment particles, further solidifying the rock. Weathering and erosion are not related to the formation of solid rock through pressure and compaction.

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  • 48. 

    Slate is an example of a ___________________ rock.

    • Sedimentary

    • Igneous

    • Metamorphic

    Correct Answer
    A. Metamorphic
    Explanation
    Slate is a type of rock that is formed through the process of metamorphism. Metamorphic rocks are formed when existing rocks, such as sedimentary or igneous rocks, undergo intense heat and pressure, causing them to change in composition and structure. In the case of slate, it is formed from the metamorphism of shale or mudstone. This process results in the formation of a fine-grained rock with a characteristic foliated texture, making it an example of a metamorphic rock.

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  • 49. 
    The picture below is an example of a ________________________ rock - ProProfs

    The picture below is an example of a ________________________ rock

    • Foliated igneous

    • Nonfoliated metamorphic

    • Foliated metamorpfic

    • Foliated igneous

    Correct Answer
    A. Foliated metamorpfic
    Explanation
    The picture shows a rock with distinct layers or bands, indicating that it has undergone metamorphism. This type of rock is known as a foliated metamorphic rock.

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Quiz Review Timeline (Updated): Sep 15, 2023 +

Our quizzes are rigorously reviewed, monitored and continuously updated by our expert board to maintain accuracy, relevance, and timeliness.

  • Current Version
  • Sep 15, 2023
    Quiz Edited by
    ProProfs Editorial Team
  • Dec 21, 2011
    Quiz Created by
    James McFadden
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