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

NCERT Solutions for Class 7 Geography Chapter 2 Inside Our Earth Updated for 2024-25

NCERT Solutions for class 7 Social Science Geography, as per the CBSE syllabus ids given here in pdf format, offer a comprehensive understanding of our planet, Earth. It’s a remarkable celestial body undergoing constant changes both internally and externally. The Earth consists of distinct layers: crust, mantle, and core. The Earth’s crust is composed of various types of rocks, namely volcanic, sedimentary, and metamorphic rocks. Minerals, naturally occurring substances with specific physical properties and chemical compositions, are also integral components. These NCERT Solutions, aligned with the CBSE class 7 social science syllabus, provide students with invaluable learning and serve as reliable references for NCERT textbook questions for class 7.

NCERT Book Solutions 7th Class Social Science Geography 2nd Chapter–Free PDF Download

You can get all Inside Our Earth class 7 questions and answers pdf from below pdf which you can also download for free for offline access.

2. INSIDE OUR EARTH

Inside Our Earth Class 7 Questions and Answers

Below are the all Inside Our Earth class 7 important questions and answers from NCERT textbook. We have covered all textual questions.

1. Answer the following questions.

Ques 1. What are the three layers of the Earth?

Ans. The three layers of the Earth are the Crust, the Mantle, and the Core.

Ques 2. What is a rock?

Ans. Rock refers to any natural mass of mineral matter that makes up the Earth’s crust. Rocks may be of different colours, textures, and sizes.

Ques 3. Name three types of rocks.

Ans. Igneous, Sedimentary, and Metamorphic rocks are the three types of rocks.

Ques 4. How are extrusive and intrusive rocks formed?

Ans. i) Extrusive rocks are formed when the molten magma present inside the Earth’s interior comes out onto the Earth’s surface, cools down, and becomes solid.

ii) When molten magma cools down and solidifies deep within the Earth’s crust, intrusive rocks are formed.

Ques 5. What do you mean by a rock cycle?

i) The transformation of one type of rock into another, under certain conditions and in a cyclical manner is referred to as the rock cycle.

ii) For example, igneous rocks, formed as a result of the solidification of molten magma, may break down into small particles, which may then be transported and deposited to form sedimentary rocks.

iii) Sedimentary and igneous rocks transform into metamorphic rocks when subjected to heat and pressure.

iv) These metamorphic rocks may themselves get broken down to form sedimentary rocks, or they may melt under great heat and pressure to form molten magma, which would then once again solidify to form igneous rocks.

Ques 6. What are the uses of rocks?

Some of the uses of rocks are as follows:

1. For building roads, houses, and buildings
2. For making jewellery
3. For cutting and drilling purposes
4. The fossil remains of plants and animals present in rocks help in scientific research.
5. The different minerals that make up different rocks are used as fuels, medicines, fertilizers, and in various industries.

Ques 7. What are metamorphic rocks?

1. Metamorphic rocks are the rocks that get formed under great heat and pressure.
2. Igneous and sedimentary rocks, when subjected to heat and pressure, get transformed into metamorphic rocks.

2. Tick the correct answer.

(i) The rock which is made up of molten magma is

1. Igneous
2. Sedimentary
3. Metamorphic

Answer: a

(ii) The innermost layer of the earth is

1. Crust
2. Core
3. Mantle

Answer: b

(iii) Gold, petroleum, and coal are examples of

1. Rocks
2. Minerals
3. Fossils

Answer: b

(iv) Rocks that contain fossils are

1. Sedimentary rocks
2. Metamorphic rocks
3. Igneous rocks

Answer: a

(v) The thinnest layer of the earth is

1. Crust
2. Mantle
3. Core

Answer: a

Match the following.

(i) Core	(a) Earth’s surface
(ii) Minerals	(b) Used for roads and buildings
(iii) Rocks	(c) Made of silicon and alumina
(iv) Clay	(d) Has the definite chemical composition
(v) Sial	(e) Innermost layer
	(f) Changes into slate
	(g) Process of transformation of the rock Rocks

Answer:

(i) Core	(e) Innermost layer
(ii) Minerals	(d) Has the definite chemical composition
(iii) Rocks	(b) Used for roads and buildings
(iv) Clay	(f) Changes into slate
(v) Sial	(c) Made of silicon and alumina

4. Give Reasons

1. We cannot go to the center of the Earth.

Ans. The center of the Earth, lying about 6000 km from the ocean floor, is characterized by extremely high temperature and pressure. There is only molten magma at Earth’s center. Oxygen is absent from this region. Such conditions do not permit the survival of any living organism. Thus, we cannot go to the center of the Earth.

2. Sedimentary rocks are formed from sediments.

Ans. When big rocks break down into small fragments (or sediments), the fragments are transported and deposited by factors like water and wind. The loose sediments compress and harden over the years to form layers and layers of rocks. These rocks are known as sedimentary rocks.

3. Limestone is changed into marble.

Ans. Limestone is an example of sedimentary rock. When it is subjected to conditions of extreme heat and pressure, it gets converted into marble, which is a metamorphic rock.

NCERT Solutions for Class 7 Social Science Geography All Chapters

• Chapter 1 Environment
• Chapter 2 Inside Our Earth
• Chapter 3 Our Changing Earth
• Chapter 4 Air
• Chapter 5 Water
• Chapter 6 Natural Vegetation and Wildlife
• Chapter 7 Human-Environment – Settlement, Transport, and Communication
• Chapter 8 Human-Environment Interactions The Tropical and the Subtropical Region
• Chapter 9 Life in the Deserts

Class 7 Inside Our Earth Summary

Class 7 chapter 2 Inside Our Earth from the NCERT Social Science Geography book examines:

1. Inside of the Earth
2. Covering
3. Mantle
4. Center
5. Rock and Minerals
6. Sedimentary Rocks
7. Transformative Rocks
8. Molten Rocks

The NCERT Social Science Geography book for 7th Class is Our Environment and Students can get answers for every one of the parts at INFINITY LEARN. For NCERT Solutions for 7th Class Social Sciences, visit the connected article. To get more insights regarding different themes you can download INFINITY LEARN. The Learning App is free of charge. We likewise give test papers, CBSE notes, earlier year question papers, and model inquiry papers for training.

NCERT Solutions for 7th Class PDF can be immediately gotten to by Students to begin the satisfactory groundwork for their forthcoming exams. Students would now be able to address any inquiries from the NCERT course books by alluding to these NCERT Solutions. These arrangements are utilized by Students to get an appropriate handle of the multitude of ideas of the subjects and furthermore to establish the framework for their profession or further higher examinations.

FAQs on NCERT Solutions for Class 7 Social Science Geography Chapter 2

How old is our Earth class 7?

Our Earth is approximately 4.5 billion years old.

What is lava class 7?

Lava is molten rock that erupts from volcanoes or is produced by the Earth's internal heat. It can be found on the surface of the Earth, such as in volcanic eruptions, or beneath the surface, where it can solidify to form rocks.

What is a rock class 7 short answer chapter 2?

A rock is a naturally occurring solid mass of mineral material. It can be found in various forms, such as igneous, sedimentary, or metamorphic, and can be composed of different minerals.

What is the name of chapter 2 in class 7 geography?

The name of Chapter 2 in Class 7 Geography is Inside Our Earth.

What are the principal subjects that Students will learn in the 2nd Chapter of NCERT Solutions for 7th Class Social Science Geography?

The main topic that Students will learn in the 2nd Chapter of NCERT Solutions for 7th Class Social Science Geography are:
Inside of the Earth
Outside
Mantle
Center
Rock and Minerals
Sedimentary Rocks
Transformative Rocks
Molten Rocks

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