Geophysics: Mid Term Quiz

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Geophysics: Mid Term Quiz - Quiz

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Questions and Answers
  • 1. 

    Branch of geophysics which studies the materials that build the interior of any planet is known as __________ physics.

    • A.

      Mineral

    • B.

      Geo-dynamics

    • C.

      Seismology

    • D.

      Bio-geophysics

    Correct Answer
    A. Mineral
    Explanation
    The branch of geophysics that studies the materials that make up the interior of any planet is known as mineral physics. This field focuses on understanding the physical and chemical properties of minerals and how they behave under extreme conditions of pressure and temperature. By studying minerals, scientists can gain insights into the composition and structure of planetary interiors, as well as processes such as mantle convection and plate tectonics.

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  • 2. 

    Branch of geophysics that deals with the study of heat flow, rock deformation, various modes of transport deformation and lithosphere dynamics is known as ________.

    • A.

      Geophysical Fluid Dynamics 

    • B.

      Geomagnetism

    • C.

      Geo-dynamics 

    • D.

      Paleo-magnetism 

    Correct Answer
    C. Geo-dynamics 
    Explanation
    Geo-dynamics is the branch of geophysics that deals with the study of heat flow, rock deformation, various modes of transport deformation, and lithosphere dynamics. It focuses on understanding the processes and forces that shape the Earth's crust and how they contribute to the movement and deformation of rocks and other geological features. This field of study helps in understanding the formation of mountains, earthquakes, plate tectonics, and other geological phenomena.

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  • 3. 

    A book named “The examination of iron ore deposits by magnetic methods” was written by ______ and published in _______. 

    • A.

      Von Warde, 1843 

    • B.

      Robert Thalen, 1879 

    • C.

      Thalen Tiberg, 1923

    • D.

      None of these

    Correct Answer
    B. Robert Thalen, 1879 
  • 4. 

    The first magnetometer "Thalen-Tiberg" was manufactured in:

    • A.

      Japan

    • B.

      Italy

    • C.

      Sweden

    • D.

      USA

    Correct Answer
    C. Sweden
    Explanation
    The correct answer is Sweden. The Thalen-Tiberg magnetometer was the first of its kind and it was manufactured in Sweden.

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  • 5. 

    Geophysical studies are:

    • A.

      Qualitative

    • B.

      Quantitative

    • C.

      Both

    • D.

      None of above

    Correct Answer
    B. Quantitative
    Explanation
    Geophysical studies involve the measurement and analysis of physical properties and processes of the Earth. These studies aim to quantify various geophysical phenomena such as seismic activity, magnetic fields, gravity, and electrical conductivity. By utilizing mathematical models and numerical data, geophysicists are able to provide quantitative measurements and interpretations of these phenomena. Therefore, the correct answer is "Quantitative".

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  • 6. 

    According to magnetic susceptibility of rocks and minerals, which of the following statement is not true? 

    • A.

      Limestone 10*106 

    • B.

      Shale 60*106 

    • C.

      Granite 200*106 

    • D.

      Quartzite 350*106 

    Correct Answer
    B. Shale 60*106 
    Explanation
    The magnetic susceptibility of rocks and minerals refers to their ability to be magnetized in the presence of a magnetic field. Higher values of magnetic susceptibility indicate a stronger response to magnetism. In this case, the answer "Shale 60*106" is not true because it suggests that shale has a higher magnetic susceptibility than granite and quartzite, which is inconsistent with the general trend. Typically, granite and quartzite have higher magnetic susceptibilities than shale.

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  • 7. 

    Geological studies are ________ and ________.   

    Correct Answer
    qualitative
    descriptive
    Explanation
    Geological studies are qualitative and descriptive because they involve the analysis and interpretation of data related to the characteristics and behavior of rocks, minerals, and other geological features. Qualitative studies focus on the qualities and properties of geological materials, while descriptive studies involve the observation and documentation of their physical attributes and processes. Both approaches are essential in understanding and explaining the complex nature of geological phenomena.

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  • 8. 

     The geophysical techniques are not used in the exploration of a diamond. 

    • A.

      True

    • B.

      False

    Correct Answer
    B. False
    Explanation
    Geophysical techniques are commonly used in the exploration of diamonds. These techniques involve the use of various instruments to measure physical properties of the earth, such as magnetic fields, electrical conductivity, and seismic waves. By analyzing these measurements, geophysicists can identify potential areas where diamonds may be present. Therefore, the correct answer is false, as geophysical techniques are indeed used in diamond exploration.

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  • 9. 

    Weathering and erosion of metamorphic rocks causes sediments to form. 

    • A.

      True

    • B.

      False

    Correct Answer
    A. True
    Explanation
    Weathering and erosion are natural processes that break down rocks into smaller particles, including metamorphic rocks. Over time, these particles accumulate and form sediments. Therefore, it is true that weathering and erosion of metamorphic rocks cause sediments to form.

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  • Current Version
  • Mar 21, 2023
    Quiz Edited by
    ProProfs Editorial Team
  • Mar 19, 2020
    Quiz Created by
    Anna
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