EXPU5C12 W1 Merged
EXPU5C12 W1 Merged
EXPU5C12 W1 Merged
Worksheet 1
A. Fill in the blanks.
1. __________ contains nutrients for the plants to grow.
2. Red colour of the soil is obtained from __________.
3. __________ is the process of gradual breakdown of rocks by wind, water and living
organisms.
4. The layer of soil made up of unweathered rock is called __________.
5. The space between soil particles is called __________.
C. Draw the diagram of soil profile and label the various layers of soil.
Worksheet 2
A. Choose the correct answer.
1. Removal of this layer of soil due to various factors results in soil erosion.
a. Topsoil b. Subsoil
c. Bedrock d. Weathered rock fragments
2. Which of the following activity does not cause soil erosion?
a. Deforestation b. Overgrazing
c. Ploughing of hills d. Afforestation
3. The cutting down of hill slopes into steps is known as __________.
a. Crop rotation b. Terrace farming
c. Embankments d. Windbreaks
4. What is the full form of FAO?
a. Food Agro Organisation
b. Fertilisers and Alluvium Organisation
c. Food and Agriculture Organisation
d. Fertilisers and Agriculture Organisation
Worksheet 3
A. State true or false.
1. Humus in soil contains nutrients for plants to grow. __________
2. Texture of soil depends on the minerals present in soil. __________
3. Bottom layer of soil contains soil particles and fertile humus. __________
4. Afforestation is the process of planting more trees. __________
5. Building embankments near river prevents soil erosion. __________
5 6
DOWN
1. Farmers can grow this crop with other crops in different season.
2. The protection of soil against erosion.
3. They help in increasing the porosity of soil.
5. They have the smallest soil particles.