NCERT Book Solutions 7th Class Social Science Geography 2nd Chapter–Free PDF Download
NCERT Solutions for 7th Class Social Science Geography 2nd Chapter is given here in free PDF structure. Our Earth is a unique planet. It continually goes through changes inside and outside. The inside of the Earth comprises of outside, mantle, and center. The world’s covering is comprised of different kinds of rocks. There are three significant sorts of rocks: volcanic rocks, sedimentary rocks, and transformative rocks. Minerals are normally happening substances that have specific actual properties and clear synthetic pieces. For Students, NCERT Solutions for 7th Class Social Science Geography is without a doubt one of the most incredible learnings and reference instruments to securely depend on for every one of the responses to the reading material inquiries.
TEXTUAL 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:
i) For building roads, houses, and buildings
ii) For making jewellery
iii) For cutting and drilling purposes
iv) The fossil remains of plants and animals present in rocks help in scientific research.
v) The different minerals that make up different rocks are used as fuels, medicines, fertilizers, and in various industries.
Ques 7. What are metamorphic rocks?
i) Metamorphic rocks are the rocks that get formed under great heat and pressure.
ii) Igneous and sedimentary rocks, when subjected to heat and pressure, get transformed into metamorphic rocks.
Tick the correct answer.
(i) The rock which is made up of molten magma is
(a) Igneous
(b) Sedimentary
(c) Metamorphic
Answer: a
(ii) The innermost layer of the earth is
(a) Crust
(b) Core
(c) Mantle
Answer: b
(iii) Gold, petroleum, and coal are examples of
(a) Rocks
b) Minerals
(c) Fossils
Answer: b
(iv) Rocks that contain fossils are
(a) Sedimentary rocks
(b) Metamorphic rocks
(c) Igneous rocks
Answer: a
(v) The thinnest layer of the earth is
(a) Crust
(b) Mantle
(c) 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 |
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 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.
Section 2: Inside Our Earth
Students can likewise get the NCERT Solutions for 7th Class for different subjects at the connected article.
NCERT Solutions for 7th Class Social science 2nd Chapter–inside Our Earth – Download PDF
Inside Our Earth Summary
2nd Chapter–inside Our Earth from the NCERT Social Science Geography book examines:
- Inside of the Earth
- Covering
- Mantle
- Center
- Rock and Minerals
- Sedimentary Rocks
- Transformative Rocks
- 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.
Frequently Asked Questions on NCERT Solutions for 7th Class Social Science Geography Chapter 2
- What are the principal subjects that Students will learn in the 2nd Chapter of NCERT Solutions for 7th Class Social Science Geography?
- How might I download the NCERT Solutions for 7th Class Social Science Geography 2nd Chaptered on the web?
- For what reason should Students select the INFINITY LEARN NCERT Solutions for 7th Class Social Science Geography 2nd Chapter for reference?
1. 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
2. How might I download the NCERT Solutions for 7th Class Social Science Geography 2nd Chaptered on the web?
You can download the NCERT Solutions for 7th Class Social Science Geography 2nd Chapter PDF from the connections given at the INFINITY LEARN site. Students just need to enlist themselves with INFINITY LEARN to download the arrangements PDF free of charge. Every one of the arrangements is made by master mentors having tremendous involvement with their separate subjects adhering to the most recent CBSE rules. Students wishing to get a superior thought of addressing the reading material inquiries can allude to the arrangements PDF. Further, every one of the arrangements is written in a basic and justifiable language to assist students with learning effortlessly and performing well in their 7th Class exams.
3. For what reason should Students select the INFINITY LEARN NCERT Solutions for 7th Class Social Science Geography 2nd Chapter for reference?
Students ought to select the INFINITY LEARN NCERT Solutions for 7th Class Social Science Geography 2nd Chapters it’s convenient and simple to fathom. Additionally, the arrangements can be seen on the web and downloaded in PDF for disconnected use by the Students at no expense and with practically no time limitations. Every one of the arrangements is organized by subject specialists at INFINITY LEARN involving straightforward language for the simplicity of learning. Slick clarifications in sections and involving announcements in the arrangements assist Students with acquiring answer show abilities indispensable for exams.
