Sedimentary Rocks Quiz Questions

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Quizzes Created: 4 | Total Attempts: 2,885
Questions: 8 | Attempts: 1,036

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Sedimentary Rocks Quiz Questions - Quiz

How much do you know about rocks? How are they formed? Let's see how much do remember about rocks? Want to Know Your Brain Capacity. Take the quiz and find out.


Questions and Answers
  • 1. 

    Which of the following is the order for forming sedimentary rocks?

    • A.

      Sedimentation - cementation - compaction

    • B.

      Compaction - sedimentation - cementation

    • C.

      Sedimentation - compaction - cementation

    Correct Answer
    C. Sedimentation - compaction - cementation
    Explanation
    The correct order for forming sedimentary rocks is sedimentation, compaction, and cementation. Sedimentation refers to the process of particles settling and accumulating on the Earth's surface. Compaction occurs when the weight of overlying sediment compresses the accumulated particles, reducing the pore spaces between them. Finally, cementation takes place when minerals precipitate and fill in the remaining pore spaces, binding the sediment particles together to form a solid rock.

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  • 2. 

    Only one of these rocks is a sedimentary rock. Which one?

    • A.

      Shale

    • B.

      Slate

    • C.

      Granite

    Correct Answer
    A. Shale
    Explanation
    Shale is the correct answer because it is a type of sedimentary rock. Sedimentary rocks are formed from the accumulation and compaction of sediment over time. Shale specifically is formed from clay, silt, or mud that has been compacted and lithified. On the other hand, slate and granite are both types of metamorphic rocks, which are formed from the transformation of pre-existing rocks due to high heat and pressure.

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  • 3. 

    Where are the oldest layers of rock usually found in a cliff made from sedimentary rock?

    • A.

      At the top

    • B.

      In the middle

    • C.

      At the bottom

    Correct Answer
    C. At the bottom
    Explanation
    The oldest layers of rock are usually found at the bottom of a cliff made from sedimentary rock. This is because sedimentary rocks are formed through the accumulation and compaction of sediment over time. As new layers of sediment are deposited on top, the older layers become buried and compressed, gradually forming solid rock. Therefore, the layers that were deposited first and are the oldest will be located at the bottom of the cliff.

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  • 4. 

    What is magma?

    • A.

      Salt crystals in sedimentary rock

    • B.

      Molten rock

    • C.

      Bubbles of gas

    Correct Answer
    B. Molten rock
    Explanation
    Magma is the correct answer because it refers to molten rock. Magma is a hot, fluid substance that is found beneath the Earth's surface. It is formed when solid rock melts due to high temperatures and pressure. Magma can eventually rise to the surface and erupt as lava during volcanic activity. It is important in the formation of igneous rocks and plays a crucial role in shaping the Earth's geology.

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  • 5. 

    What does the presence of tiny crystals in a piece of igneous rock tell you about it?

    • A.

      The molten rock cooled very quickly

    • B.

      The molten rock cooled very slowly

    • C.

      The molten rock cooled deep underground

    Correct Answer
    A. The molten rock cooled very quickly
    Explanation
    The presence of tiny crystals in a piece of igneous rock suggests that the molten rock cooled very quickly. When magma cools rapidly, there is not enough time for large crystals to form, resulting in the formation of small crystals or even a glassy texture. This indicates that the rock was likely formed from a volcanic eruption or a rapid cooling event near the Earth's surface.

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  • 6. 

    Which type of rock never contains fossils?

    • A.

      Sedimentary

    • B.

      Igneous

    • C.

      Metamorphic

    Correct Answer
    B. Igneous
    Explanation
    Igneous rock is formed from the solidification of molten material, such as lava or magma. This process does not typically allow for the preservation of fossils, as the high temperatures involved would destroy any organic material. Sedimentary rock, on the other hand, is formed from the accumulation and compaction of sediment, which can often contain fossils. Metamorphic rock is formed from the alteration of existing rock through heat and pressure, and while it can sometimes contain fossils, they are usually highly distorted and difficult to recognize. Therefore, igneous rock is the type of rock that never contains fossils.

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  • 7. 

    Which one of these rocks is an igneous rock?

    • A.

      Marble

    • B.

      Limestone

    • C.

      Basalt

    Correct Answer
    C. Basalt
    Explanation
    Basalt is an igneous rock because it is formed from the solidification of molten lava or magma. It has a fine-grained texture and is typically dark in color. Marble and limestone, on the other hand, are both sedimentary rocks formed from the accumulation and compression of organic or inorganic sediments.

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  • 8. 

    Which statement about metamorphic rocks is correct?

    • A.

      They are formed when rocks are heated until they melt

    • B.

      They are only formed from heated sedimentary rocks

    • C.

      They are formed from all types of rock

    Correct Answer
    C. They are formed from all types of rock
    Explanation
    Metamorphic rocks are formed from all types of rock. This is because metamorphism occurs when pre-existing rocks undergo changes in response to heat, pressure, and/or chemical reactions, without melting completely. This process can affect any type of rock, including igneous, sedimentary, and even other metamorphic rocks. As a result, metamorphic rocks exhibit a wide range of textures and mineral compositions, reflecting the original rock's characteristics and the specific conditions of metamorphism.

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  • Current Version
  • Mar 22, 2023
    Quiz Edited by
    ProProfs Editorial Team
  • Jun 06, 2010
    Quiz Created by
    Ukrockstheworld
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