Toppers Study Toppers Study Toppers StudyGet complete NCERT Solutions for 7 Science 9. Soil with detailed explanations. Easy-to-understand answers to help students study effectively and score better.
Get complete NCERT Solutions for 7 Science 9. Soil with detailed explanations. Easy-to-understand answers to help students study effectively and score better.
Preparing for exams becomes easier with Additional Questions With Solutions. Whether you are studying for board exams or mid-term exams, 7 Science Chapter 9. Soil solutions provide quick revising points, well-structured answers, and additional practice material to help you score better.
ncert_solutionsQues: What is humus?
Ans: The rotten death material presence in soil is known as humus.
Ques: what is weathering?
Ans: The breaking down of rocks by the action of wind, water, and climate. This process is called weathering.
Ques: which are those factors which influence the nature of soil?
Ans:
(i) Rocks from which it has been formed.
(ii) Vegetation that grows in it.
Ques: What is soil profile?
Ans: A vertical section through different layers of the soil is called the soil profile.
Ques: What are Horizons?
Ans: Each layer differ in feel (texture), colour, depth and chemical composition. These l-ayers are referred to as horizons.
Ques: why is the uppermost horizon generally dark in colour?
Ans: As it is rich in humus and minerals.
Ques: Name the layer of the soil which makes the soil fertile.
Ans: Humus.
Ques: What is topsoil?
Ans: The upper layer is generally soft, porous and can retain more water; it is called the topsoil or the A-horizon.
Ques: In how many layers has soil profile been divided?
Ans: Soil profile has been divided in four layers.
(i) topsoil or A-horizon
(ii) B-horizon
Ques: What is called the layer of soil profile which is hard and difficult to dig?
Ans: Bedrock
Ques: What is soil?
Ans: The mixture of rock particles and humus is called the soil.
Ques: What are various classifications of soil?
Ans: The classifications of soil.
Ques: Write three properties of sandy soil.
Ans:
Ques: Name the some important climatic factors which affect the soil profile and bring changes in the soil structure.
Ans: Soil is affected by the wind, rainfall, temperature, light and humidity etc.
Ques: What is percolation?
Ans: Absorbing water by the soil is known as percolation.
Ques: What is soil erosion?
Ans: The removal of land surface by water wind or ice is known as soil erosion.
Ques: Explain how soil is formed?
Ans: The soil is formed by the breaking down of rocks by the action of wind, water and climate.
Ques: List the differences between clayey soil and sandy soil.
Ans:
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Ques: How is clayey soil useful for crops?
Ans: Clayey soil is useful for crops, because they are rich in humus and are very fertile.
Additional Questions With Solutions are created by experts to give step-by-step explanations. Around 60–70% of exam questions are based on NCERT concepts. Our 7 Science Chapter 9. Soil solutions help you understand the core concepts and practice effectively.
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In short, Additional Questions With Solutions for 7 Science Chapter 9. Soil are a complete study package. With quick revising points, NCERT exercises, and additional important questions, you can prepare effectively for exams. Make these solutions your study companion and excel in your academic journey.
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