NCERT Solutions | Class 7 Social Science Geography Chapter 2

NCERT Solutions | Class 7 Social Science Geography Chapter 2 | Inside our Earth 

NCERT Solutions for Class 7 Social Science Geography Chapter 2 Inside our Earth

CBSE Solutions | Social Science Class 7

Check the below NCERT Solutions for Class 7 Social Science Geography Chapter 2 Inside our Earth Pdf free download. NCERT Solutions Class 7 Social Science  were prepared based on the latest exam pattern. We have Provided Inside our Earth Class 7 Social Science NCERT Solutions to help students understand the concept very well.

NCERT | Class 7 Social Science Geography

NCERT Solutions Class 7 Social Science
Book: National Council of Educational Research and Training (NCERT)
Board: Central Board of Secondary Education (CBSE)
Class: 7th
Subject: Social Science Geography
Chapter: 2
Chapters Name: Inside our Earth
Medium: English

Inside our Earth | Class 7 Social Science | NCERT Books Solutions

You can refer to MCQ Questions for Class 7 Social Science Geography Chapter 2 Inside our Earth to revise the concepts in the syllabus effectively and improve your chances of securing high marks in your board exams.

Class 7 Geography Chapter 2 NCERT Textbook Questions and Answers

NCERT Solutions for Class 7 SST Geography Chapter 2,  Question 1.

Answer the following questions.


  1. What are the three layers of the earth?
  2. What is a rock?
  3. Name three types of rocks.
  4. How are extrusive and intrusive rocks formed?
  5. What do you mean by a rock cycle?
  6. What are the uses of rocks?
  7. What are metamorphic rocks?

CBSE Class 7 SST Geography Chapter 2,  Answer:

(i) Three layers of the earth are:
(a) Crust
(b) Mantle
(c) Core

(ii) Any natural mass of mineral matter that makes up the earth’s crust is called a rock.

(iii) Three types of rocks are:

  • Sedimentary rocks
  • Metamorphic rocks
  • Igneous rocks which are also known as primary rocks

(iv) When the molten lava comes on the earth’s surface, it rapidly cools down and becomes solid. Extru­sive igneous rocks are formed in such a way on the crust. Sometimes the molten magma cools down deep inside the earth’s crust. Solid rocks so formed are called extrusive igneous rocks.

(v) The process of transformation of the rock from one to another is known as the rock cycle. When the molten magma cools it solidifies to become igneous rock. These igneous rocks are broken down into small particles that are transported and deposited to form sedimentary rocks.

When the igneous and sedimentary rocks are subjected to heat and pressure they change into metamorphic rocks. The metamorphic rocks which are still under great heat and pressure melt down to form molten magma. This molten magma again can cool down and solidify into igneous rocks.

(vi) The hard rocks are used for making roads, houses and buildings. Stones are used in many games, e.g. seven stones (pitthoo), hop-scotch (stapu/ kit kit), and five stones (gitti).

(vii) Igneous and sedimentary rocks can change into metamorphic rocks under great heat and pressure. For example, clay changes into slate and limestone into marble.

CBSE SST Class 7 textbook Question 2.

Tick the correct answer.


(i) The rock which is made up of molten magma is:
(a) Igneous
(b) Sedimentary
(c) Metamorphic

NCERT Class 7 Geography Chapter 2,  Answer:

(a) Igneous

(ii) The innermost layer of the earth is:
(a) Crust
(b) Core
(c) Mantle

CBSE Class 7 Social Science Geography Chapter 2,  Answer:

(b) Core

(iii) Gold, petroleum and coal are examples of:
(a) Rocks
(b) Minerals
(c) Fossils

CBSE Class 7 SST Geography Chapter 2,  Answer:

(b) Minerals

(iv) Rocks which contain fossils are:
(a) Sedimentary rocks
(b) Metamorphic rocks
(c) Igneous rocks

CBSE Class 7 Geography Chapter 2,  Answer:

(a) Sedimentary rocks

(iv) The thinnest layer of the earth is:
(a) Crust
(b) Mantle
(c) Core

NCERT Solutions for Class 7 Social Science Geography Chapter 2,  Answer:

(a) Crust

CBSE Social Science Class 7 textbook Question 3.

Match the following:


Column I Column II
1. Core (a) Earth’s surface
2. Minerals (b) Used for roads and buildings
3. Rock (c) Made of silicon and alumina
4. Clay (d) Has definite chemical composition
5. Sial (e) Innermost layer
(f) Changes into state
(g) Process of transformation of the rock

CBSE Class 7 Geography Chapter 2,  Answer:

1. (e)
3. (b)
4. (f)
5. (c)

CBSE SST Class 7 syllabus Question 4.

Give reasons.


(i) We cannot go to the centre of the earth.
(ii) Sedimentary rocks are formed from sediments.
(iii) Limestone is changed into marble.

NCERT Solutions for Class 7 Social Science Geography Chapter 2,  Answer:

(i) It is not possible to reach to the centre of the earth because for that we have to dig a hole of 6000 km deep on the ocean floor.
(ii) The smaller rock particles (sediments) are compressed and hardened to form layers of rocks. These types of rocks are called sedimentary rocks.
(iii) Igneous and sedimentary rocks can change into metamorphic rocks under great heat and pressure. For example, limestone changes into marble.

CBSE Class 7 Social Science Geography Chapter 2,  Question 5.

For fun.


(i) What are the minerals most commonly used in the following objects?
(ii) Identify some more objects made up of different minerals.
NCERT Solutions for Class 7 Social Science Geography Chapter 2 Inside our Earth 1

NCERT Solutions Class 7 Social Science Geography Chapter 2,  Answer:

NCERT Solutions for Class 7 Social Science Geography Chapter 2 Inside our Earth 2

(ii) Students discuss with teacher and can make a list of such items.

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