Geography · Environmental Studies

Geomorphic Processes

2,120 Questions

Geomorphic processes shape the Earth surface through physical mechanisms like weathering, erosion, and deposition. This topic covers soil formation, glacial movement, and coastal landform development. It forms a core component of physical geography in major competitive examinations.

Soil erosion controlGlacial movementCoastal landformsSedimentary rock formationWeathering processes

Geomorphic Processes Questions

Multiple choice biology the soil soil erosion (geo) soil erosion, soil conservation and uses of soil soil erosion and conservation

In the hills, the soil erosion takes place due to rapid flow of rain water. It can be most effectively controlled by.

  1. Channel sing the water

  2. Terrace cultivation

  3. Jhum cultivation

  4. Building dikes
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Channeling the water helps manage the flow of runoff on slopes, preventing it from gaining enough speed to cause significant erosion. While terrace cultivation is also used, channeling is a direct control method for rapid flow.

Multiple choice biology the soil soil erosion (geo) soil erosion, soil conservation and uses of soil soil erosion and conservation

Which one of the following erosion processes is a natural process?

  1. Geological erosion

  2. Accelerated erosion

  3. Gully erosion

  4. Rill erosion
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation
New soils can be formed through the slow weathering of the parent rock material, and from the deposition of air-borne or waterborne sediments. Under normal climate conditions, and with natural ground cover, soil erosion can often balance out with the rate of soil production. This is called natural, or geological erosion. Unfortunately, these geologic processes are very slow and are often overshadowed by the activities of man.
So the correct option is 'geological erosion'.

 
Multiple choice evs - i the soil soil erosion (geo) soil erosion, soil conservation and uses of soil soil erosion and conservation sustainability of natural resources adaptations - mangrove swamps, fast flowing rivers and treetops halophiles

Removal of the soil by the action of wind and water is known as 

  1. Erosion

  2. Fossilization

  3. Leaching

  4. Calcification
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

The top layer of the soil is the vital component, since all the nutrients required by plants are present in this layer. The loss of topsoil or disturbance of soil structure is known as soil erosion or land erosion. Water erosion is the removal of soil from the lands surface by running water, including runoff from melted snow and ice. Soil erosion by wind is common in dry arid regions where soil is chiefly sandy and the vegetation is very poor or even absent. Fossilization is the alteration of an organism's remains, impressions or activities by physical, biological or chemical changes retaining the original material in some form. Leaching is the process of extracting minerals from a solid by dissolving them in a liquid, either in nature or through an industrial process. Calcification is the accumulation of calcium salts.

Therefore, the correct answer is option A.

Multiple choice biology the soil soil erosion (geo) soil erosion, soil conservation and uses of soil soil erosion and conservation

Soil erosion by wind brings about the serious damage in soil by changing the__________

  1. Soil permeability

  2. Soil structure

  3. Soil texture

  4. Soil plasticity
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation
  • Surface texture is the best key to wind erosion protection. Very fine soil particles are carried high into the air by the wind and transported great distances (suspension). 
  • Fine-to-medium size soil particles are lifted a short distance into the air and drop back to the soil surface, damaging crops and dislodging more soil (saltation). 
  • Larger-sized soil particles that are too large to be lifted off the ground are dislodged by the wind and roll along the soil surface (surface creep). The abrasion that results from windblown particles breaks down stable surface aggregates and further increases the soil erodibility.
Multiple choice biology the soil soil erosion (geo) soil erosion, soil conservation and uses of soil soil erosion and conservation

Arrange the following in the descending order of their role in soil erosion
(I) Wind erosion
(ii) Chemical degradation
(iii) Physical degradation
(iv) Water erosion

  1. iv $\rightarrow$ i $\to$ ii $\to$ iii
  2. iv $\to$ ii $\to$ iii $\to$ i
  3. i $\to$ ii $\to$ iii $\to$ iv
  4. iv $\to$ iii $\to$ ii $\to$ i
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Water erosion is when the flowing water carries away the soil with it.This amounts for the largest amount of soil erosion. Wind erosion is when the blowing wind carries the soil with it. physical degradation is a gradual process of many steps beginning from structural deterioration and ending in the differential loss of finer particles through erosion. Physical degradation is a gradual process in which the soil is broken down into finer particles. Chemical degradation mainly consists of soil pollution and acidification. Thus the correct answer is option A.

Multiple choice biology the soil soil erosion (geo) soil erosion, soil conservation and uses of soil soil erosion and conservation

Arrange the following in descending order of their role in soil erosion.
(i) Wind erosion

(ii) Chemical degradation 
(ii) Physical degradation 
(iv) Water erosion

  1. i, ii, iii, iv

  2. iv, i, ii, iii

  3. iv, iii, ii, i

  4. iv, ii, iii, i
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Soil erosion is the process of wearing of upper layer of soil by the natural physical forces such as water and wind or by farming activities. Water erosion and wind erosion are the two major physical forces which play an important role in soil erosion. The farming activities include chemical and physical degradation. Use of pesticides leads to soil erosion. Physical degradation such as cutting of trees leads to soil erosion.

Thus, the correct answer is 'iv, i, ii, iii.'

Multiple choice geography human environment interactions: the tropical and the subtropical region the soil soil erosion (geo) soil erosion, soil conservation and uses of soil

Dentritic pattern of drainage has a _______.

  1. right angles structure.

  2. jointly rock terrain.

  3. dome like structure.

  4. branch like structure
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

A dendritic drainage pattern is the most common form and looks like the branching pattern of tree roots. It develops in regions underlain by homogeneous material. That is, the subsurface geology has a similar resistance to weathering so there is no apparent control over the direction the tributaries take.

Multiple choice geography exogenic processes part-2 the soil soil erosion (geo) soil erosion, soil conservation and uses of soil

Radial pattern of drainage has _______.

  1. right angles structure.

  2. jointly rock terrain.

  3. dome like structure.

  4. branch like structure.
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Radial pattern of drainage has dome like structure.
It is a drainage pattern in which consequent streams radiate or diverge outward, like the spokes of a wheel, from a high central area; it is best developed on the slopes of a young, unbreached dome like structure or of a volcanic cone.

Multiple choice geography the challenging face of the earth and landforms the soil soil erosion (geo) soil erosion, soil conservation and uses of soil

Mechanical weathering is caused by _____________.

  1. Plants and animals

  2. Solution action of water

  3. Temperature changes

  4. Earthquakes
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Mechanical weathering (or physical weathering) is primarily driven by physical forces such as temperature fluctuations (thermal expansion and contraction), frost wedging, and pressure release, rather than chemical reactions.

Multiple choice geography the challenging face of the earth and landforms the soil soil erosion (geo) soil erosion, soil conservation and uses of soil

The process of decomposition and disintegration of rocks is called ______________.

  1. Denudation

  2. Erosion

  3. Weathering

  4. Gradation
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Weathering is the general term for the breakdown of rocks at the Earth's surface through physical, chemical, and biological processes without significant transport, which distinguishes it from erosion.