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Chapters
1.2: From Trade to Territory
1.3: Rural Life and Society
1.4: People’s Revolt
1.5: Educational Development in India
1.6: Development of Industries in India
1.7: Urban changes during the British period
1.8: Status of Women in India through the ages
▶ 2.1: Rocks and Soils
2.2: Weather and Climate
2.3: Hydrologic Cycle
2.4: Migration and Urbanisation
2.5: Hazards
2.6: Industries
2.7: Exploring Continents Africa, Australia and Antarctica
2.8: Map Reading
3.1: How the State Government Works
3.2: Citizens and Citizenship
3.3: Understanding Secularism
3.4: Human Rights and UNO
3.5: Road Safety Rules and Regulations
3.6: Defence & Foreign Policy
3.7: The Judiciary
4.1: Money, Savings and Investments
4.2: Public and Private Sectors
![Samacheer Kalvi solutions for Social Science [English] Class 8 TN Board chapter 2.1 - Rocks and Soils - Shaalaa.com](/images/social-science-english-class-8-tn-board_6:5f2b1b2038084cf381bfa42c826a928c.jpg "Samacheer Kalvi solutions for Social Science [English] Class 8 TN Board chapter 2.1 - Rocks and Soils")
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Solutions for Chapter 2.1: Rocks and Soils
Below listed, you can find solutions for Chapter 2.1 of Tamil Nadu Board of Secondary Education Samacheer Kalvi for Social Science [English] Class 8 TN Board.
Samacheer Kalvi solutions for Social Science [English] Class 8 TN Board 2.1 Rocks and Soils Evaluation [Pages 92 - 94]
Choose the correct answer
Which of the following is known as sphere of rocks.
Atmosphere
Biosphere
Lithosphere
Hydrosphere
World soil day is observed on.
15th August
12th January
15th October
5th December
Fossils are found in.
Sedimentary rocks
Igneous rocks
Metamorphic rocks
Plutonic rocks
The top layer of soil is called as.
organic layer or humas
topsoil
subsoil
bedrock
Ideal soil for growing cotton is ______.
Red soil
Black soil
Alluvial soil
Mountain soil
The major components of soil is ______.
Rocks
Minerals
Water
All the above
Which one of the following is the most widespread most and productive category of soil.
Alluvial soil
Black soil
Red soil
Mountain soil
Fill in the blanks
Scientific study of rocks is called ______.
______ soil is highly suitable for millets cultivation.
The “skin of earth” is ______.
______ is the kind of metamorphic rock using which Taj Mahal was built.
______ is known as the primary rocks.
State whether the following statements are true or false
Igneous rocks are called primary rocks.
True
False
Slate is formed from shale.
True
False
Red soil is formed by the process of leaching.
True
False
M-sand is used as alternative for natural sand in construction.
True
False
Match the following:
| A. | Granite | 1. | Bedrock |
| B. | Soil layer | 2. | Plutonic rock |
| C. | Barren island | 3. | Strip farming |
| D. | Soil conservation | 4. | Active Volcano |
A - 2, B - 1, C - 4, D - 3
A - 2, B - 1, C - 3, D - 4
A - 4, B - 3, C - 2, D - 1
A - 3, B - 4, C - 2, D - 1
Match the following:
| A. | Basalt | 1. | Anthracite |
| B. | Limestone | 2. | Extrusive igneous |
| C. | Coal | 3. | Metamorphic rock |
| D. | Gneiss | 4. | Sedimentary rock |
A - 2, B - 4, C - 3, D - 1
A - 2, B - 4, C - 1, D - 3
A - 3, B - 1, C - 2, D - 4
A - 3, B - 1, C - 4, D - 2
Choose the incorrect statement from the following.
Igneous rocks are called the primary rocks
Soil is the product of weathering of rocks
Sedimentary rocks are the hardest ones
Deccan plateau is the region of Igneous rocks
Choose the incorrect statement from the following
Soil erosion decreases its fertility
Dynamic metamorphism is caused by high temperature
Soil is a renewable source
Humus is a part of the top layer of soil
Consider the following statements and choose the right option from the given ones
Statement (1): Sedimentary rocks consist of many layers.
Statement (2): Sedimentary rocks are formed by the sediments deposited at different points of time.
1 and 2 are correct and 2 explains 1.
1 and 2 are correct but, 2 does not explain 1.
1 is correct but, 2 is incorrect.
2 is correct but, 1 is incorrect.
Give reasons
Chemical sedimentary rocks are found in the beds of reservoirs.
Igneous rocks are found in the regions of volcanoes.
Distinguish between Metamorphic rock and sedimentary rock.
Distinguish between Soil conservation and Soil erosion.
Answer briefly
How are igneous rocks formed?
Describe about the composition of soil.
Define ‘rock’
State the types of soils.
What is soil conservation?
Answer in a Paragraph
Explain the process of soil formation.
Classify and explain the rocks.
Give an account on different layers of soil.
Classify and explain the soil.
Solutions for 2.1: Rocks and Soils
Samacheer Kalvi solutions for Social Science [English] Class 8 TN Board chapter 2.1 - Rocks and Soils
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Concepts covered in Social Science [English] Class 8 TN Board chapter 2.1 Rocks and Soils are Soil Formation and Preparation for Agriculture, Introduction of Rocks and Soils, Rock and it's Types.
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