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Class 8 Exam  >  Class 8 Tests  >  Social Studies (SST) Class 8  >  Test: Land Soil Water Natural And Wildlife Resources- 2 - Class 8 MCQ

Test: Land Soil Water Natural And Wildlife Resources- 2 - Class 8 MCQ


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15 Questions MCQ Test Social Studies (SST) Class 8 - Test: Land Soil Water Natural And Wildlife Resources- 2

Test: Land Soil Water Natural And Wildlife Resources- 2 for Class 8 2024 is part of Social Studies (SST) Class 8 preparation. The Test: Land Soil Water Natural And Wildlife Resources- 2 questions and answers have been prepared according to the Class 8 exam syllabus.The Test: Land Soil Water Natural And Wildlife Resources- 2 MCQs are made for Class 8 2024 Exam. Find important definitions, questions, notes, meanings, examples, exercises, MCQs and online tests for Test: Land Soil Water Natural And Wildlife Resources- 2 below.
Solutions of Test: Land Soil Water Natural And Wildlife Resources- 2 questions in English are available as part of our Social Studies (SST) Class 8 for Class 8 & Test: Land Soil Water Natural And Wildlife Resources- 2 solutions in Hindi for Social Studies (SST) Class 8 course. Download more important topics, notes, lectures and mock test series for Class 8 Exam by signing up for free. Attempt Test: Land Soil Water Natural And Wildlife Resources- 2 | 15 questions in 15 minutes | Mock test for Class 8 preparation | Free important questions MCQ to study Social Studies (SST) Class 8 for Class 8 Exam | Download free PDF with solutions
Test: Land Soil Water Natural And Wildlife Resources- 2 - Question 1
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What are some major factors leading to soil degradation?

Detailed Solution for Test: Land Soil Water Natural And Wildlife Resources- 2 - Question 1
Soil degradation is caused by factors such as deforestation, overgrazing, overuse of chemical fertilizers or pesticides, rain wash, landslides, and floods, which deplete the soil's fertility and structure.
Test: Land Soil Water Natural And Wildlife Resources- 2 - Question 2
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Soil conservation is the process where_____________.

Detailed Solution for Test: Land Soil Water Natural And Wildlife Resources- 2 - Question 2
Soil conservation is a method of protecting soil from getting eroded either by wind or water.

Few soil conservation methods include:

i) Graduated terrace steps which are commonly used for farming on hilly or mountainous terrain. Terraced fields decrease both erosion and surface runoff.

ii) Windbreaks: Row of trees or a fence, wall, or screen that provides shelter or soil protection from the wind.

iii) Conservation tillage is a method of preparing soil from getting eroded. This technique involves leaving the previous year’s crop residues until the next crop is planted.

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Test: Land Soil Water Natural And Wildlife Resources- 2 - Question 3
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Which method involves covering the bare ground between plants with organic matter to retain soil moisture?

Detailed Solution for Test: Land Soil Water Natural And Wildlife Resources- 2 - Question 3
Mulching is a method where the bare ground between plants is covered with organic matter like straw to help retain soil moisture and protect the soil from erosion.
Test: Land Soil Water Natural And Wildlife Resources- 2 - Question 4
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How is contour ploughing beneficial for soil conservation?
Detailed Solution for Test: Land Soil Water Natural And Wildlife Resources- 2 - Question 4
Contour ploughing involves ploughing parallel to the contours of a hill slope to form a natural barrier that slows down water flow, reducing soil erosion and maintaining soil fertility.
Test: Land Soil Water Natural And Wildlife Resources- 2 - Question 5
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________determines thickness of soil profile.
Detailed Solution for Test: Land Soil Water Natural And Wildlife Resources- 2 - Question 5
Time determines the thickness of Soil pro le, climate determines the rate of weathering and formation of Humus; relief affects the soil accumulation.

Test: Land Soil Water Natural And Wildlife Resources- 2 - Question 6
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What percentage of the earth's surface is covered by water?
Detailed Solution for Test: Land Soil Water Natural And Wildlife Resources- 2 - Question 6
Approximately 70% of the earth's surface is covered by water, with oceans playing a crucial role in supporting marine life and regulating the planet's climate.
Test: Land Soil Water Natural And Wildlife Resources- 2 - Question 7
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What role do shelter belts play in soil conservation?
Detailed Solution for Test: Land Soil Water Natural And Wildlife Resources- 2 - Question 7
Shelter belts, which are rows of trees planted in coastal and dry regions, play a significant role in soil conservation by preventing wind movement and protecting the soil cover from erosion.
Test: Land Soil Water Natural And Wildlife Resources- 2 - Question 8
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Which of the following method is used in the Western and Central Himalayas for soil conservation?
Detailed Solution for Test: Land Soil Water Natural And Wildlife Resources- 2 - Question 8
Steps can be cut out on the slopes making terraces. Terrace cultivation restricts erosion. Western and central Himalayas have well-developed terrace farming.

Test: Land Soil Water Natural And Wildlife Resources- 2 - Question 9
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Why is fresh water considered the most precious substance on earth?
Detailed Solution for Test: Land Soil Water Natural And Wildlife Resources- 2 - Question 9
Fresh water is extremely precious because only about 1% of it is available and fit for human use, making it crucial for drinking, agriculture, and industrial purposes.
Test: Land Soil Water Natural And Wildlife Resources- 2 - Question 10
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An international convention          has been established that lists several species of animals and birds in which trade is prohibited.
Detailed Solution for Test: Land Soil Water Natural And Wildlife Resources- 2 - Question 10

An international convention CITES has been established that lists several species of animals and birds in which trade is prohibited.

Test: Land Soil Water Natural And Wildlife Resources- 2 - Question 11
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Which method of irrigation is particularly useful in dry regions with high evaporation rates?
Detailed Solution for Test: Land Soil Water Natural And Wildlife Resources- 2 - Question 11
Drip or trickle irrigation is effective in dry regions with high evaporation rates as it delivers water directly to the plant roots, minimizing water loss through evaporation.
Test: Land Soil Water Natural And Wildlife Resources- 2 - Question 12
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What method can be used to slow down the flow of water and prevent soil loss?
Detailed Solution for Test: Land Soil Water Natural And Wildlife Resources- 2 - Question 12

Rocks are piled up to slow down the flow of water. This prevents gullies and further soil loss.

Test: Land Soil Water Natural And Wildlife Resources- 2 - Question 13
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What is the effect of forest and vegetation cover on water conservation?
Detailed Solution for Test: Land Soil Water Natural And Wildlife Resources- 2 - Question 13
Forest and vegetation cover help conserve water by slowing surface runoff, which allows more water to infiltrate the ground and replenish underground water sources.
Test: Land Soil Water Natural And Wildlife Resources- 2 - Question 14
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Soil conservation is best achieved by_____.
Detailed Solution for Test: Land Soil Water Natural And Wildlife Resources- 2 - Question 14
Soil erosion is the loss of the top fertile soil layer either by wind or by water. India is facing this problem in many parts. The area affected by soil erosion is 5, 00,000 square kilometres. It adversely affects the productivity and economy of the country. There are many techniques to prevent soil erosion. But the essential step is to increase the planting of trees or afforestation.

Test: Land Soil Water Natural And Wildlife Resources- 2 - Question 15
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Which regions are most susceptible to droughts and water scarcity?
Detailed Solution for Test: Land Soil Water Natural And Wildlife Resources- 2 - Question 15
Regions with climatic zones most susceptible to droughts face great problems of water scarcity, often due to variations in seasonal or annual precipitation and over-exploitation of water sources.
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