Tag: natural resources - air, water and land

Quizzes (38) Questions (45)

Questions Related to natural resources - air, water and land

Multiple choice soil as a natural resource natural resources - air, water and land land physical resources biology

Major source of formation of soil is

  1. Rocks

  2. Snow covered mountains

  3. River beds

  4. Volcanoes
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation
The parent material is the substance by which the soil is formed, these are generally rocks. Weathering and disintegration of rocks lead to the formation of soil. This is the major source of soil formation. So, the correct answer is option A.
Multiple choice soil as a natural resource natural resources - air, water and land land physical resources biology

Which of the following factor does not help in the formation of soil?

  1. Wind and water

  2. Decomposed plants and animals

  3. Rocks and temperature

  4. Water accumulation
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

The surface layer of the earth's crust is called soil. It forms by the process of weathering and erosion. It takes a long time to form the soil. There are several factors that affect the process of soil formation. These are climate, topography, parent material, organic material and time span. Rainfall influence the rate of weathering and humus formation. Parent rocks determine the texture, colour, chemical properties, mineral content and quality. Topography i.e. slope and altitude decide the accumulation of soil. Flora, fauna and microbes affect the rate of humus formation. Time span determines the thickness of soil layer. Water accumulation does not help in the formation of soil.

So, the correct answer is option D.

Multiple choice soil as a natural resource natural resources - air, water and land land physical resources biology

The most determining factor for soil formation is

  1. Parent rock

  2. Running water

  3. Humus

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

the presence and type of parent rock is the most determining factor in the formation of soil. This is because the parent decides what type of soil will be formed. The soil constituents, chemical nature, what type of crops it can grow is all determined by the type of parent rock.

So the correct answer is "A".

Multiple choice soil as a natural resource natural resources - air, water and land land physical resources biology

Laterization is a process that results in the

  1. Degradation of soil

  2. Purification of water

  3. Formation of soil

  4. Sterilization of soil
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Laterization is a prolonged process of chemical weathering of rocks leading to the formation of soil. It produces a variation in the thickness, grade, chemistry and ore mineralogy of the rock creating soil particles. Thus the correct answer is option C.

Multiple choice soil as a natural resource natural resources - air, water and land land physical resources biology

The soil is formed by the breaking down of rocks by the action of

  1. Wind

  2. Water

  3. Climate

  4. All of the above
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

The soil is formed by weathering, it is the process of breaking down of rocks by the action of heavy wind, water flow and climate. Breaking down of small particles of rocks mix with humus, make it soil fertile. Thus, the correct option is D.

Multiple choice soil as a natural resource natural resources - air, water and land land physical resources biology

Weathering of rocks occurs due to

  1. Strong winds

  2. Flowing water

  3. Heating and cooling of rocks

  4. All of the above
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Strong winds, flowing water and heating and cooling of rocks leads to its breakdown. They break the tough rock particles and convert them into smaller ones. They also create cracks in them.

So, option D is the correct answer.

Multiple choice soil as a natural resource natural resources - air, water and land land physical resources biology

Which three layers form the soil profile?

  1. Air, water and soil

  2. Minerals, organic matter and living organisms

  3. Clay, silt and sand

  4. The topsoil, subsoil and parent material
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

A soil profile is a vertical section of soil that displays its various layers, known as horizons. The primary horizons are typically classified as topsoil (A-horizon), subsoil (B-horizon), and parent material (C-horizon).

Multiple choice soil as a natural resource natural resources - air, water and land land physical resources biology

Which of the following is known as the parent material in the formation of soil?

  1. Sand

  2. Stone

  3. Rocks

  4. None of the above
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Soil is mainly formed due to the weathering of large rocks. The action of abiotic factors on the rocks leads the gradual conversion into the layer of soil. The process of soil formation is known as pedogenesis. Soil is the mixture of minerals, organic matter, gasses, liquids, and the countless organisms that together support life on the earth. The mineral riches of soil provides fertility to the soil and hence, help the plants to grow well. 

So, the correct answer is option B.