Class 5 - Science - Soil Erosion and Conservation - Work Sheet ... - Free Printable

Let me work through this worksheet step by step to provide accurate answers.

Q1) Name the following:

i. The top most layer of soil - This is called topsoil or humus (the organic-rich uppermost layer)

ii. The process of wearing away of rocks - This is weathering

iii. The process of water or wind carrying away soil - This is erosion

iv. Protection of soil from getting eroded - This is soil conservation

v. Soil conservation done on hill slopes - This is terracing or terrace farming

vi. Cutting down of trees - This is deforestation

vii. Planting of trees - This is afforestation or reforestation

viii. Strong embankments made along the river banks - These are bunds or levees

Q2) Define the following:

A. Bunds - Bunds are strong embankments or barriers built along riverbanks or across slopes to prevent soil erosion and control water flow.

B. Soil erosion - Soil erosion is the process where the top layer of soil is worn away and carried off by natural forces like water, wind, or ice.

C. Soil conservation - Soil conservation means protecting soil from being washed or blown away, keeping it healthy and productive for growing plants.

D. Afforestation - Afforestation is the process of planting trees in areas where there were no forests before, to create new forest areas.

E. Terrace farming - Terrace farming is a method of growing crops on stepped levels cut into hillsides or mountains, which helps prevent soil erosion on steep slopes.

Q3) How do the following methods prevent soil erosion?

i) Embankments - Embankments act as barriers that hold back water and soil. They slow down the flow of water, preventing it from washing away the soil. By reducing water speed and creating a physical barrier, they keep soil in place along riverbanks and slopes.

ii) Soil covers - Soil covers (like vegetation, mulch, or crop residues) protect the soil surface from direct impact of raindrops and wind. They reduce the force of falling rain, slow down water runoff, and help hold soil particles together with their roots, preventing them from being washed or blown away.

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Final Answer:

Q1)
i. Topsoil/Humus
ii. Weathering
iii. Erosion
iv. Soil conservation
v. Terracing/Terrace farming
vi. Deforestation
vii. Afforestation/Reforestation
viii. Bunds/Levees

Q2)
A. Bunds - Strong embankments built along riverbanks or across slopes to prevent soil erosion and control water flow
B. Soil erosion - The wearing away and removal of topsoil by water, wind, or ice
C. Soil conservation - Methods used to protect soil from erosion and maintain its fertility
D. Afforestation - Planting trees in areas that did not have forests before
E. Terrace farming - Growing crops on stepped levels on hillsides to prevent soil erosion

Q3)
i) Embankments - Act as barriers to slow down water flow and physically hold soil in place, preventing it from being washed away
ii) Soil covers - Protect soil surface from raindrop impact and wind, reduce water runoff speed, and root systems help bind soil particles together