Wed. Jun 19th, 2024

Denudation Chronology and Erosional Surfaces

  1. According to Davis, what is the overall profile of residual hills projecting above planation surface?

    Options:
    1. Convexo-concave
    2. Steep and concave in plan
    3. Flat and undulating
    4. None of the above

    Option: B

  2. Which of the following processes are not significant in the late stage of the cycle of erosion according to Davis?

    Options:
    1. Backwasting
    2. Divide wasting
    3. Downdearing (downwasting)
    4. All of the above

    Option: D

  3. What are most of the planation surfaces according to Davis?

    Options:
    1. Undulating surfaces
    2. Perfectly level surfaces
    3. Convexo-concave surfaces
    4. None of the above

    Option: B

  4. According to Davisian theory, what should happen to a higher surface when a lower surface develops?

    Options:
    1. It should be preserved
    2. It should be obliterated
    3. It should be uplifted
    4. None of the above

    Option: B

  5. What is the mechanism of panplanation involving lateral planation (erosion) by meandering rivers called according to Crickmay?

    Options:
    1. Interfluve wasting
    2. Flood plain formation
    3. Divide shifting
    4. None of the above

    Option: A

  6. What happens in the penultimate stage of cycle of panplanation according to Crickmay?

    Options:
    1. Vertical erosion and valley deepening become more active
    2. Lateral erosion becomes more active
    3. Both and
    4. None of the above

    Option: B

  7. What is the end result of the backwasting of interfluves according to Crickmay?

    Options:
    1. Formation of extensive flood plains
    2. Uplift of the land surface
    3. Creation of meandering rivers
    4. None of the above

    Option: A

  8. Who developed the concept of panplanation?

    Options:
    1. Davis
    2. Crickmay
    3. Geomorphologists
    4. Flood plain scientists

    Option: B

  9. What did Crickmay overemphasize in the penultimate stage of erosion?

    Options:
    1. Lateral erosion
    2. Coalescence of flood plains
    3. Elimination of interfluves
    4. Formation of panplains

    Option: A

  10. Why could Crickmay’s concept of panplanation not command wider acceptance?

    Options:
    1. Because it overemphasized lateral erosion
    2. Because it did not explain the formation of flood plains
    3. Because it did not account for the undulating surface of a panplain
    4. Because it was not developed by a team of geomorphologists

    Option: A