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# Solutions 9. Soil - NCERT Exercise | 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 - NCERT Exercise | Class 7 Science - Toppers Study is the best material for English Medium students cbse board and other state boards students.

## Solutions 9. Soil - NCERT Exercise | Class 7 Science - Toppers Study

CBSE board students who preparing for class 7 ncert solutions maths and Science solved exercise chapter 9. Soil available and this helps in upcoming exams 2023-2024.

### You can Find Science solution Class 7 Chapter 9. Soil

• All Chapter review quick revision notes for chapter 9. Soil Class 7
• NCERT Solutions And Textual questions Answers Class 7 Science
• Extra NCERT Book questions Answers Class 7 Science
• Importatnt key points with additional Assignment and questions bank solved.

Chapter 9 Science class 7

### NCERT Exercise class 7 Science Chapter 9. Soil

• Solutions 9. Soil - NCERT Exercise | Class 7 Science - Toppers Study
• Class 7 Ncert Solutions
• Solution Chapter 9. Soil Class 7
• Solutions Class 7
• Chapter 9. Soil NCERT Exercise Class 7

## Solutions 9. Soil - NCERT Exercise | Class 7 Science - Toppers Study

Exercise NCERT Book

Tick the most suitable answer in questions 1 and 2.

Q1. In addition to the rock particles, the soil contains

(i) air and water (ii) water and plants

(iii) minerals, organic matter, air and water

(iv) water, air and plants

(iii) Minerals, organic matter, air and water.

Q2. The water holding capacity is the highest in

(i) sandy soil      (ii) clayey soil

(iii) loamy soil     (iv) mixture of sand and loam

(ii) Clayey soil.

Q3. Match the items in Column I with those in Column II:

Column I                          Column II

(i) A home for living organisms    (a) Large particles

(ii) Upper layer of the soil         (b) All kinds of soil

(iii) Sandy soil                     (c) Dark in colour

(iv) Middle layer of the soil        (d) Small particles and packed tight

(v) Clayey soil                    (e) Lesser amount of humus

 Column I Column II (i) A home for living organisms (b) All kinds of soil (ii) Upper layer of the soil (c) Dark in colour (iii) Sandy soil (a) Large particles (iv) Middle layer of the soil (e) Lesser amount of humus (v) Clayey soil (d) Small particles and packed tight

Q4. Explain how soil is formed.

Soil is formed by the breaking down of rocks by the action of wind, water and climate. This process is called weathering and further addition of humus formed by the decomposition of organic matter on the earth's surface make it fertile.

Q5. How is clayey soil useful for crops?

Clayey soil retains water to a great extent. Thus the crops which require more water such a soil as, wheat etc. Grow well in clayey soil.

Q6. List the differences between clayey soil and sandy soil.

Q7. Sketch the cross section of soil and label the various layers.

Q8. Razia conducted an experiment in the field related to the rate of percolation. She observed that it took 40 min for 200 mL of water to percolate through the soil sample. Calculate the rate of percolation.

Q9. Explain how soil pollution and soil erosion could be prevented.

Cutting of trees and deforestayion should be effort should be made to increase the green areas.

Q10. Solve the following crossword puzzle with the clues given:

Across 2. Plantation prevents it.

5. Use should be banned to avoid soil pollution.

6. Type of soil used for making pottery.

7. Living organism in the soil. Down

1. In desert soil erosion occurs through.

3. Clay and loam are suitable for cereals like.

4. This type of soil can hold very little water.

5. Collective name for layers of soil.