Wed. Jun 19th, 2024

Earth Interior

  1. What is the significance of the Weichert-Gutenberg Discontinuity?

    Options:
    1. It is the boundary between the mantle and the crust
    2. It is the boundary between the mantle and the core
    3. It is the boundary between the crust and the atmosphere
    4. None of the above

    Option: B

  2. What is the density range of the core of the Earth?

    Options:
    1. 5.5 to 10.0 g/cm3
    2. 10.0 to 12.3 g/cm3
    3. 12.3 to 13.3 g/cm3
    4. 13.3 to 13.6 g/cm3

    Option: D

  3. Why do S waves disappear in the outer core?

    Options:
    1. Because the outer core is in a solid state
    2. Because the outer core is in a molten state
    3. Because the outer core is composed of silicates
    4. None of the above

    Option: B

  4. What is the density range of the inner core of the Earth?

    Options:
    1. 5.5 to 10.0 g/cm3
    2. 10.0 to 12.3 g/cm3
    3. 12.3 to 13.3 g/cm3
    4. 13.3 to 13.6 g/cm3

    Option: D

  5. What is the speed of P waves along the mantle-core boundary or Gutenberg Discontinuity?

    Options:
    1. 5.5 km per second
    2. 10.0 km per second
    3. 11.23 km per second
    4. 13.6 km per second

    Option: D

  6. What is the main composition of the Earth’s core?

    Options:
    1. Silicates
    2. Hydrogen
    3. Iron and nickel
    4. None of the above

    Option: C

  7. What is the percentage of the total mass of the Earth that the core represents?

    Options:
    1. 16%
    2. 32%
    3. 50%
    4. 100%

    Option: B