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Our ncert solutions for Solutions 9. Soil - topic -1 | Class 7 Science - Toppers Study is the best material for English Medium students cbse board and other state boards students.

 

Solutions ⇒ Class 7th ⇒ Science ⇒ 9. Soil

Solutions 9. Soil - topic -1 | Class 7 Science - Toppers Study

Topper Study classes prepares ncert solutions on practical base problems and comes out with the best result that helps the students and teachers as well as tutors and so many ecademic coaching classes that they need in practical life. Our ncert solutions for Solutions 9. Soil - topic -1 | Class 7 Science - Toppers Study is the best material for English Medium students cbse board and other state boards students.

9. Soil

| topic -1 |

Solutions 9. Soil - topic -1 | Class 7 Science - Toppers Study


Chapter Review:


  • The rotten death material presence in soil is known as humus. 
  • The mixture of rock particles and humus is called the soil.

  • The breaking down of rocks by the action of wind, water, and climate. This process is called weathering.
  • A vertical section through different layers of the soil is called the soil profile. 

  • Each layer differ in feel (texture), colour, depth and chemical composition. These layers are referred to as horizons. 

  • The upper layer is generally soft, porous and can retain more water; it is called the topsoil or the A-horizon.

  • Absorbing water by the soil is known as percolation. 

  • The removal of land surface by water wind or ice is known as soil erosion.

  • The soil is formed by the breaking down of rocks by the action of wind, water and climate.

  • The best topsoil for growing plants is loam. Loamy soil is a mixture of sand, clay and another type of soil particle known as silt.

  • Clayey soil is used to make pots, toys and statues.

  • Soil is affected by wind, rainfall, temperature, light and humidity.

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Solutions ⇒ Class 7th ⇒ Science
1. Nutrition in Plants
2. Nutrition in Animals
3. Fibre to Fabric
4. Heat
5. Acids, Bases and Salts
6. Physical and Chemical Changes
7. Weather, Climate and Adaptations of Animals to Climate
8. Winds, Storms and Cyclones
9. Soil
10. Respiration in Organisms
11. Transportation in Animals and Plants
12. Reproduction in Plants
13. Motion and Time
14. Electric Current and its Effects
15. Light
16. Water : A Precious Resource
17. Forests: Our Lifeline
18. Wastewater Story

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