The study of the detailed causal mechanisms and materials of landforms
The study of the interrelationships of physical and chemical processes in landforms
The study of geomorphologists and biochemists
Option: B
What is the significance of realist theory?
Options:
It emphasizes the study of the external form of landforms
It emphasizes the study of physical and chemical mechanisms operating in the geomaterials and geological structure within the external forms
It emphasizes the study of processes at micro-scales
It emphasizes the study of processes at meso-scale
Option: B
What is the shift in methodology of geomorphic investigation after 1960?
Options:
Macro-scale form study was preferred to meso-scale process study
Meso-scale form study was preferred to macro-scale process study
Micro-scale process study was preferred to meso-scale form study
Meso-scale process study was preferred to micro-scale process study
Option: C
Who among the following is responsible for the concept of ‘process realism’?
Options:
G.K. Gilbert
A.K. Sundborg
R.E. Horton
All of the above
Option: D
What are the major problems faced by geomorphologists studying physical and chemical processes at micro-spatial and temporal scales?
Options:
They require specially trained geoscientists in general and biochemists in particular.
The results drawn through the investigation of processes at micro-scales may not be applicable for the generalization of mechanisms of processes at meso-scale.
Both A and B
None of the above
Option: C
What was Grove Karl Gilbert’s approach to studying landforms?
Options:
He preferred to theorize about landform development
He focused on collecting information and data through field observation and instrumentation
He solely relied on existing theories to study landforms
He conducted experiments in a laboratory setting
Option: B
According to Gilbert, why did he not develop a common theory regarding the evolution and development of landforms?
Options:
He did not have enough data to support any theory
Tentative theories of landform development are seldom proved on the basis of field data
He did not want to limit his research to a specific theory
He believed that the study of landforms should be left to theorists
Option: B
Which of the following principles did Gilbert not postulate regarding different geomorphic features?
Options:
Law of uniform slope
Law of structure
Law of increasing acclivity
Law of decreasing entropy
Option: D
What is the main task before geomorphologists, according to Gilbert?
Options:
To develop a common theory regarding the evolution and development of landforms
To collect information and data through field observation and instrumentation
To identify and quantify frictional rhythms and determine their dynamic competition
To interpret geomorphic processes using scientific methods
Option: C
What were the three major components of Gilbert’s postulates?
Options:
a. Concept of quality, concept of energy, and concept of entropy
b. Concept of quantification, concept of time, and concept of equilibrium
c. Concept of thermodynamics, concept of energy, and concept of disorder
d. Concept of rhythm, concept of entropy, and concept of balance
Option: B
What was Gilbert’s approach to interpreting geomorphic processes and landforms?
Options:
He focused more on quality than quantity
He did not apply any laws to the analysis of geological processes
He applied the laws of thermodynamics and gave more emphasis to quantity
He relied solely on field observation to interpret geomorphic processes and landforms
Option: C
What does the first law of thermodynamics state?
Options:
Energy is neither created nor destroyed but total energy remains constant and it can be transferred from one type to another type
As time passes and the energy within the system becomes more equally distributed, the entropy increases until, at the state of maximum entropy, all parts of the closed system have the same energy level
With the passage of time, a system tends to achieve minimum energy and maximum entropy
Energy cannot be transferred from one type to another type, and it is not conserved
Option: A
What does the second law of thermodynamics state?
Options:
Energy is neither created nor destroyed but total energy remains constant and it can be transferred from one type to another type
As time passes and the energy within the system becomes more equally distributed, the entropy increases until, at the state of maximum entropy, all parts of the closed system have the same energy level
With the passage of time, a system tends to achieve minimum energy and maximum entropy
Energy cannot be transferred from one type to another type, and it is not conserved
Option: B
What was Gilbert’s approach towards nature?
Options:
Retrodiction
Prediction
Both A and B
None of the above
Option: B
What were the two fundamental concepts of natural philosophy according to Gilbert?
Options:
Concept of climate and revolution
Concept of rhythm and equilibrium
Concept of evolution and steady state
None of the above
Option: B
How did Gilbert differentiate the traditional concept of evolution from the non-evolutionary concept involving equilibrium model?
Options:
He rejected the evolutionary concept involving continuous progressive change in landforms through time
He advocated the concept of time-independent model of landform development involving dynamic equilibrium and steady state
Both A and B
None of the above
Option: C
What is Gilbert’s concept of equilibrium?
Options:
In the final form of any functional system, the sum of the forces acting on the final form equals zero.
The principle of least work becomes operative wherein the sum of driving and resisting forces becomes zero.
Both A and B
None of the above
Option: C
How did Gilbert apply the principle of least force in the case of river to elucidate profile of equilibrium?
Options:
The downstream flow of river water is guided by the force of gravity wherein the potential energy is converted into kinetic energy.
The driving force in the case of a river (say energy of the river system) is provided by its flow velocity while the resistance is offered by the bed-load and lithology of river valley.
So long as the system energy say driving force (flow velocity) equals the resisting force say frictional force, the state of equilibrium is established.
All of the above
Option: D
Who was the first geomorphologist to present a general theory of landform development?
Options:
R.C. Palmquist
William Morris Davis
Both A and B
None of the above
Option: B
In what year did William Morris Davis present his theory of the “complete cycle of river life”?