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Subjects

Geography

Soil formation processes

In this Class 11 Geography topic from Geomorphic Processes, students learn how soil develops through the weathering of rocks and the gradual interaction of parent material, climate, organisms, relief and time. The topic explains key processes such as the addition and loss of materials, transformation of minerals and the movement of clay and other substances within the soil profile. It also helps students understand soil horizons, profile development and the influence of erosion and drainage on soil formation.

Expert · Level 5 · 25 questions

TOPIC PRACTICE

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25 questions

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  1. Parent material
  2. Time
  3. Tide
  4. Latitude only
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  1. Gradual change in climate
  2. Only river width
  3. Only human population
  4. Ocean depth
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  1. Difference in vegetation and biological communities
  2. Height of sea waves
  3. Duration of lunar eclipse
  4. Name of the river
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  1. Because elevation and slope position change runoff and accumulation
  2. Because the Sun rises in the west
  3. Because sea salt is equal everywhere
  4. Because rocks do not contain organisms
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  1. Clay translocation and accumulation
  2. Direct melting of glacier
  3. Return of sea tide
  4. Sand turning into gas
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  1. Illuvial clay accumulation
  2. Surface snowfall
  3. Direction of lava flow
  4. Earthquake intensity
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  1. Washing of clay from upper horizon and deposition below
  2. Soil changing into sea
  3. Air changing into water
  4. Immediate melting of limestone
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  1. Formation of soluble complexes by organic acids
  2. Reverse flow of a river
  3. Permanent freezing of sand
  4. Marine fishes
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  1. Development of brown colour and moderate iron oxidation
  2. Complete salinisation of soil
  3. Entry of sea waves
  4. Immediate conversion of soil into glacier
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  1. Red colour
  2. Blue colour
  3. Black water
  4. White cloud
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  1. Close mixing of humus with mineral material
  2. Only sea salt
  3. Only glacial sand
  4. Shine of limestone
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  1. Iron and aluminium oxides
  2. Only soluble sodium chloride
  3. Fresh ice crystals
  4. Marine algae
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  1. Calcium carbonate
  2. Crude petroleum
  3. Glass pieces
  4. Pure ice
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  1. Gypsum
  2. Quartz only
  3. Diamond
  4. Graphite
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  1. Because materials such as silica or iron bind like cement
  2. Because clouds freeze in soil
  3. Because river water becomes gas
  4. Because plants eat rocks
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  1. Repeated alternation of wet and dry conditions
  2. Permanently icy temperature
  3. Only sea tide
  4. Complete absence of biology
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  1. Because swelling and shrinking clay creates cracks
  2. Because sea waves turn the soil
  3. Because a glacier ploughs daily
  4. Because sandy particles grow
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  1. It mixes soil layers through freezing and thawing
  2. It makes seawater fresh
  3. It only increases plant height
  4. It creates sunlight in soil
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  1. Mixing or churning of soil materials
  2. Evaporation of seawater
  3. Uplift of mountains
  4. Breaking of clouds
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  1. Organisms change structure through burrowing and mixing
  2. Waves melt rocks
  3. The Moon pulls soil
  4. Volcano creates clouds
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  1. They bring deeper soil upward and change nutrients and texture
  2. They lower sea level
  3. They completely stop rainfall
  4. They make rock into lava
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  1. It can improve nutrient uptake through root fungus symbiosis
  2. It turns soil into a river
  3. It removes all microorganisms
  4. It controls air pressure
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  1. Because biological and chemical activities are more active around roots
  2. Because sea tide reaches there
  3. Because no microorganism lives there
  4. Because it is the Moon surface
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  1. Soil has more organised organic matter and horizon development
  2. Regolith is always fertile
  3. Soil has no minerals
  4. There is no difference between them
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  1. Because enough time for horizon development has not passed
  2. Because alluvium has no minerals
  3. Because rivers have no water
  4. Because biological activity is impossible

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