Tamil Nadu Board of Secondary EducationSSLC (English Medium) Class 8th
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Tamil Nadu Board Samacheer Kalvi solutions for Class 8th Social Science Answers Guide chapter 2 - Rocks and Soils [Latest edition]

Chapters

Class 8th Social Science Answers Guide - Shaalaa.com
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Chapter 2: Rocks and Soils

Evaluation
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Evaluation [Pages 92 - 94]

Tamil Nadu Board Samacheer Kalvi solutions for Class 8th Social Science Answers Guide Chapter 2 Rocks and SoilsEvaluation [Pages 92 - 94]

Choose the correct answer

Evaluation | Q I. 1 | Page 92

Which of the following is known as sphere of rocks.

  • Atmosphere

  • Biosphere

  • Lithosphere

  • Hydrosphere

Evaluation | Q I. 2 | Page 92

World soil day is observed on.

  • 15th August

  • 12th January

  • 15th October

  • 5th December

Evaluation | Q I. 3 | Page 93

Fossils are found in.

  • Sedimentary rocks

  • Igneous rocks

  • Metamorphic rocks

  • Plutonic rocks

Evaluation | Q I. 4 | Page 93

The top layer of soil is called as.

  • organic layer or humas

  • topsoil 

  • subsoil

  • bedrock

Evaluation | Q I. 5 | Page 93

Ideal soil for growing cotton is ______.

  • Red soil

  • Black soil

  • Alluvial soil

  • Mountain soil

Evaluation | Q I. 6 | Page 93

The major components of soil is ______.

  • Rocks

  • Minerals

  • Water

  • All the above

Evaluation | Q I. 7 | Page 93

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

Evaluation | Q II. 1 | Page 93

The scientific study of weather is called ____.

Evaluation | Q II. 2 | Page 93

______ soil is highly suitable for millets cultivation.

Evaluation | Q II. 3 | Page 93

The “skin of earth” is ______.

Evaluation | Q II. 4 | Page 93

______ is the kind of metamorphic rock using which Taj Mahal was built.

Evaluation | Q II. 5 | Page 93

______ is known as the primary rocks.

State whether the following statements are true or false

Evaluation | Q III. 1 | Page 93

Igneous rocks are called primary rocks.

  • True

  • False

Evaluation | Q III. 2 | Page 93

Slate is formed from shale.

  • True

  • False

Evaluation | Q III. 3 | Page 93

Red soil is formed by the process of leaching.

  • True

  • False

Evaluation | Q III. 4 | Page 93

M-sand is used as alternative for natural sand in construction.

  • True

  • False

Evaluation | Q IV. 1 | Page 93

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

Evaluation | Q IV. 2 | Page 93

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

Evaluation | Q V. 1 | Page 93

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

Evaluation | Q V. 2 | Page 93

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

Evaluation | Q VI. 1 | Page 93

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

Evaluation | Q VII. 1 | Page 94

Chemical sedimentary rocks are found in the beds of reservoirs.

Evaluation | Q VII. 2 | Page 94

Igneous rocks are found in the regions of volcanoes.

Evaluation | Q VIII. 1 | Page 94

Distinguish between Metamorphic rock and sedimentary rock.

Evaluation | Q VIII. 2 | Page 94

Distinguish between Soil conservation and Soil erosion.

Answer briefly

Evaluation | Q IX. 1 | Page 94

How are igneous rocks formed?

Evaluation | Q IX. 2 | Page 94

Describe about the composition of soil.

Evaluation | Q IX. 3 | Page 94

Define ‘rock’

Evaluation | Q IX. 4 | Page 94

State the types of soils.

Evaluation | Q IX. 5 | Page 94

What is soil conservation?

Answer in a Paragraph

Evaluation | Q X. 1 | Page 94

Explain the process of soil formation.

Evaluation | Q X. 2 | Page 94

Classify and explain the rocks.

Evaluation | Q X. 3 | Page 94

Give an account on different layers of soil.

Evaluation | Q X. 3 | Page 94

Classify and explain the soil.

Chapter 2: Rocks and Soils

Evaluation
Class 8th Social Science Answers Guide - Shaalaa.com

Tamil Nadu Board Samacheer Kalvi solutions for Class 8th Social Science Answers Guide chapter 2 - Rocks and Soils

Tamil Nadu Board Samacheer Kalvi solutions for Class 8th Social Science Answers Guide chapter 2 (Rocks and Soils) include all questions with solution and detail explanation. This will clear students doubts about any question and improve application skills while preparing for board exams. The detailed, step-by-step solutions will help you understand the concepts better and clear your confusions, if any. Shaalaa.com has the Tamil Nadu Board of Secondary Education Class 8th Social Science Answers Guide solutions in a manner that help students grasp basic concepts better and faster.

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Concepts covered in Class 8th Social Science Answers Guide chapter 2 Rocks and Soils are Soil Formation and Preparation for Agriculture, Introduction of Rocks and Soils, Rock and it's Types.

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