Soil - Worksheets

 CBSE Worksheet-01

Class – VII Science (Soil)

  1. The water holding capacity is the highest in
    1. Clayey soil
    2. Sandy soil
    3. Loamy soil
    4. Mixture of sand and loam.
  2. In addition to the rock particles, the soil contains
    1. Air and water
    2. Wood
    3. Water and plant
    4. Minerals, organic matter, air and water.
  3. Which layer is formed of decayed organic matter?
    1. Air
    2. Humus
    3. Minerals
    4. Clay
  4. Soil erosion is a process of
    1. Soil pollution
    2. Soil formation
    3. Weathering
    4. Removal of top soil
  5. Match the following
    Column AColumn B
    a. Red latosoli. soil erosion
    b. Khadarii. Basaltic rock
    c. Black soiliii. Red soil
    d. Cultivation of coffeeiv. Laterite soil
    e. Deforestationv. Alluvial soil
  6. Fill in the blanks.
    1. Alluvial soil is also called _______.
    2. A dead and decaying material produced by plants in soil is called _______.
    3. _______ is the process in which soil is washed out by rain water.
    4. _______ soil has the maximum water retention capacity.
    5. _______ is another name of black soil.
  7. What is soil? How is it formed?
  8. What is soil profile?
  9. Write the three functions of soil?
  10. Following are organic and inorganic constituent of soil. Classify them.
    Dead and decaying plant matter, nitrate, phosphates, human excreta, carbonates, iron, sodium, dead microorganism.

CBSE Worksheet-01
Class – VII Science (Soil)
Answer key

  1. a
  2. d
  3. b
  4. d
  5. (a) – (iii), (b) – (v), (c) – (ii), (d) – (iv), (e) – (i).
    1. Khadar
    2. Humus
    3. Soil erosion
    4. Clayey
    5. Rejar.
  6. Soil is the uppermost fertile layer crust of the earth. It is formed by the process of breakdown large rocks into smaller particles by the action of rain, wind, temperature and microbes, plant and animals.
  7. Different layer of soil having characteristic features are called soil profile. Each profile is divided into a series of layers called horizons.
  8. Functions of soil:
    1. Soil anchors the plants and firmly fixes them.
    2. It serves as reservoir of food materials and water.
    3. Soil helps plants to get oxygen from the soil through roots.
  9. Organic matters: Dead and decaying plant matter, human excreta, dead microorganisms.
    Inorganic matters: Nitrate, phosphate, carbonate, iron, sodium.