NCERT Solutions for Geography Chapter 2 Inside Our Earth Class 7 - FREE PDF Download
Start learning with Vedantu's NCERT Solutions for Class 7 Geography Chapter 2, Inside Our Earth. Access detailed and clear explanations of key concepts with our Class 7 Geography NCERT Solutions to enhance your understanding of the subject with easy-to-follow, step-by-step solutions provided by Vedantu.
By exploring Inside Our Earth Class 7, students can deeply understand key concepts such as the structure of the Earth, types of rocks, and the rock cycle as outlined in the curriculum. This comprehensive resource ensures a thorough grasp of the material, enhancing students' knowledge and preparation. Check out the revised class 7 social science syllabus and start with Vedantu for academic excellence.
Glance on NCERT Solutions for Class 7 Geography Chapter 2 Inside Our Earth
Class 7th Geography Chapter 2, Inside Our Earth, delves into the fascinating structure of the Earth.
This chapter inside our Earth Class 7 explains the different layers that make up our planet, providing insights into their composition and characteristics.
The chapter emphasises the importance of geological studies and how they contribute to our knowledge of the natural world.
Students learn about the three main layers - the crust, mantle, and core discussed in Inside our Earth Class 7 Questions and Answers.
The chapter covers various types of rocks, including igneous, sedimentary, and metamorphic rocks.
The chapter inside our earth class 7 also touches upon natural phenomena such as earthquakes and volcanic eruptions, explaining their causes and effects.
It also describes in detail the various components of the environment in Geography Class 7 Chapter 2, which include man-made components, natural components (air, water, land, and living things), and human components.
Students will also be able to learn about life on different terrains, including temperate grasslands, deserts, etc.
1. Answer the following questions:
(i) What are the three layers of the earth?
Ans: The three layers of the earth are core, mantle, and crust.
(ii) What is a rock?
Ans: Any natural mass of mineral materials that makes up the earth's crust is referred to as a rock.
(iii) Name three types of rocks.
Ans: The three types of rocks are metamorphic, sedimentary, and igneous.
(iv) How are extrusive and intrusive rocks formed?
Ans: Igneous rocks include both extrusive and intrusive types. Extrusive rocks are generated when molten magma from the earth's interior rises to the surface, cools, and solidifies on the crust. The structure of these rocks is incredibly fine grained. Take basalt, for example. Intrusive rocks develop when molten lava cools and solidifies deep within the earth's crust. They create big grains because they cool slowly. Granite is a good example of this rock.
(v) What do you mean by a rock cycle?
Ans: The rock cycle is defined as the transition of one type of rock into another under specified conditions and in a cyclic fashion. Igneous rocks, for example, which develop when molten lava solidifies, can break down into minute particles, which can subsequently be transported and deposited to produce sedimentary rocks. When heat and pressure are applied to sedimentary and igneous rocks, they convert into metamorphic rocks. These metamorphic rocks may break down to generate sedimentary rocks, or they may melt under extreme heat and pressure to form molten magma, which subsequently solidifies to become igneous rocks.
(vi) What are the uses of rocks?
Ans: The following are some uses of rock :
For the construction of roads, residences, and other structures.
For use in cutting and drilling.
Scientific inquiry is aided by the fossilised remnants of plants and animals found in rocks.
Minerals found in diverse rocks are utilised as fuels, medicines, fertilisers, and in a variety of industries.
(vii) What are metamorphic rocks?
Ans: Metamorphic rocks are the rocks that get formed under great pressure and heat.
Igneous and sedimentary rocks, when subjected to heat and pressure then get transformed into metamorphic rocks. For example, limestone into marble and clay changes to slate.
2. Tick the correct answer.
(i) The rock which is made up of molten magma is
(a) Igneous (b) Sedimentary (c) Metamorphic
Ans: (a) Igneous - Magma, a heated (600 to 1,300 °C, or 1,100 to 2,400 °F) molten or partially molten rock substance, solidifies to produce igneous rocks.
(ii) The innermost layer of the earth is
(a) Crust (b) Core (c) Mantle
Ans: (b) Core - The core refers to the earth's innermost layer. It is separated into two sections: the inner core and the outer core.
(iii) Gold, petroleum and coal are examples of
(a) Rocks (b) Minerals (c) Fossils
Ans: (b) Minerals - Fuel minerals, such as coal and petroleum, are classified as such. Carbonaceous fuels are what they're called. Fossil fuels are extracted from the earth and are created through the breakdown of fossils.
(iv) Rocks which contain fossils are
(a) Sedimentary rocks (b) Igneous rocks (c) Metamorphic rocks
Ans: (a) Sedimentary rocks - Fossil layers are sedimentary rock layers that include fossils. Sedimentary rock is a type of rock that forms in layers when sediments are deposited and pressed on top of one another.
(v) The thinnest layer of the earth is
(a) Crust (b) Mantle (c) Core
Ans: (a) Crust - In comparison to the other two layers, the crust is hard and very thin. The crust beneath the oceans is rather thin, extending only around 5 kilometres.
3. Match the following
Ans:
4. Give reasons.
(i) We cannot go to the centre of the earth.
Ans: Extremely high temperature and pressure characterise the earth's core, which is located around 6000 kilometres below the ocean's surface. At the earth's core, there is just molten magma. There is no oxygen. Any live entity would not be able to survive under such conditions. As a result, we are unable to travel to the Earth's core.
(ii) Sedimentary rocks are formed from sediments.
Ans: When large boulders break down into small fragments (or sediments), water and wind move the fragments and deposit them. Over time, the loose sediments compress and harden, forming layers of rocks. Sedimentary rocks are the name given to these types of rocks.
(iii) Limestone is changed into marble.
Ans: Sedimentary rocks, such as limestone. When it is subjected to tremendous heat and pressure, it transforms into marble, which is a metamorphic rock.
5. For fun
(i) What are the minerals most commonly used in the following objects?
Ans:
(ii) Identify some more objects made up of different minerals.
Ans: Graphite is used to make pencil lead. Copper wiring is used in telephones. Sulphur and chromite are found in our carpets. Quartz and Pentlandite are used to make clocks.
Topics Covered in Class 7 Geography Chapter 2 Inside Our Earth
Benefits of NCERT Solutions for Class 7 Geography Chapter 2 Inside Our Earth
The NCERT solutions provide a detailed explanation of the Earth's structure, helping students gain a thorough understanding.
The Class 7 Geography Chapter 2 questions and answers cover all the important topics and sub-topics of the chapter, providing students with a comprehensive understanding and facilitating effective revision.
Diagrams and illustrations included in the solutions enhance visual learning, making it easier for students to visualise and comprehend the Earth's internal processes.
These solutions inside our Earth Class 7 offer well-structured answers to textbook questions, which are beneficial for exam preparation.
The Geography Class 7 Chapter 2 solutions often include activities and interactive exercises that engage students, making the learning process more enjoyable and effective.
By explaining natural phenomena and their causes, the solutions help students connect textbook knowledge to real-world events, enhancing their overall learning experience.
Important Study MaterialLinks for Class 7 Geography Chapter 2 - Inside Our Earth
Conclusion
NCERT Solutions for Class 7 Social Science Chapter 2 Inside Our Earth, offers a comprehensive and detailed exploration of the Earth's structure. With the class 7 Social Science Geography Chapter 2, students can effectively revise the key concepts and topics covered in the chapter. These solutions effectively break down complex concepts such as the Earth's layers, types of rocks, and the rock cycle, making them accessible and understandable for students. The inclusion of diagrams and interactive exercises enhances learning and retention.
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FAQs on NCERT Solutions for Class 7 Social Science Geography Chapter 2 Inside Our Earth
1. What is the necessity of the environment, and what are the impacts of human activities on it?
The environment is critical to healthy living and the survival of life on our planet, Earth. Earth is home to various living creatures, and we are all dependent on the environment for food, air, water, and so on. Food is a basic requirement for everyone. Air keeps all living things alive. Water covers the majority of the earth's surface. As a result, everyone must conserve and safeguard the environment. There are several forms of human activity that might be directly linked to environmental disasters. Disasters include acid rain, ocean acidification, climate change, deforestation, ozone layer depletion, hazardous waste disposal, global warming, overpopulation, pollution, and so on.
2. Why should you conserve biodiversity?
It is believed that an area with higher species abundance has a more stable environment compared to an area with lower species abundance. Additionally, there is a necessity for biodiversity considering our dependency degree on the environment.
We depend directly on many species of plants for several needs. Similarly, we depend on several species of animals and microbes for various reasons. Biodiversity is being lost due to the over-exploitation of resources, loss of habitat, climatic changes, invasive exotic species, diseases, pollution, hunting, etc. Since it provides us with several economic and behavioural benefits and adds aesthetic value, it is crucial to conserve biodiversity.
3. What makes up the interior of the Earth according to Chapter 2 of Our Environment Textbook of Class 7?
The interior of the earth is divided into three parts. The crust is generally made of multiple varieties of rocks (sedimentary, igneous, and metamorphic). The crust is the outermost layer that extends to the interior. The mantle lies beneath this crust which is characterized by dense, hot, and bulky solids. This layer is the most predominant in terms of volume. Underneath this, we would find the core.
4. What is the meaning of inside our Earth according to Chapter 2 of Our Environment Textbook of Class 7?
Inside of our earth refers to the interior portion or region of the earth which lies beneath the earth’s outermost surface or beneath the earth’s crust. This interior region is made up of the mantle and the core. The core is further subdivided into the outer core and inner core. The mantle is the most predominant layer in terms of occupying the earth’s total volume.
5. What do you mean by rocks and minerals according to Chapter 2 of Our Environment Textbook of Class 7?
Some rocks are made up of extinct animal shells or crushed plant pieces. Minerals are naturally occurring inorganic elements or compounds with a well-ordered internal structure, chemical composition, crystal form, and physical properties. All of them are like the building pieces of our planet, and their qualities must be examined in order to have a thorough understanding of their origin, processes, and so on. If you have any further questions about this issue, please visit the Vedantu website. The Vedantu Mobile app is also available.
6. What is a globe, according to Chapter 2 of Our Environment Textbook of Class 7?
Globe is nothing but a scaled-down model of our earth. The globe is spherical, whereas our earth is orange in shape. This shape is known as a geoid. There are different types of globes. They are broadly divided into two types, namely the terrestrial globe and the celestial globe. The terrestrial globe has the world’s maps and the celestial globe is used to map stars.
7. How do I download the Solutions for Chapter 2 of Class 7 Our environment Textbook?
The solutions are easily available on the Vedantu site.
Click on NCERT Solutions for Class 7 Textbook Our Environment.
Choose Chapter 2.
The webpage with Vedantu’s solutions for Class 7 SST Our environment Chapter 2 will open.
To download this, click on the Download PDF button and you can view the solutions offline.
The solutions of the other Social Science books and chapters can also be found on the Vedantu site and that too without any cost.
8. What are the main layers of the Earth covered in Chapter 2 inside our earth class 7?
The main layers of the Earth discussed in this geography class 7 chapter 2 are the crust, the mantle, and the core. Each layer has distinct characteristics and composition.
9. What types of rocks are explained in the class 7 geography chapter 2 questions and answers?
The class 7 geography chapter 2 questions and answers cover three main types of rocks: igneous, sedimentary, and metamorphic. It explains how each type is formed and their respective characteristics.
10. What is the rock cycle discussed in NCERT class 7 geography chapter 2?
The rock cycle is a continuous process through which rocks transform from one type to another. The NCERT class 7 geography chapter 2 details this cycle, explaining processes like cooling, erosion, heat, and pressure that contribute to these transformations.
11. How does the NCERT solutions class 7th geography chapter 2 help in understanding the structure of the Earth?
The NCERT solutions inside our Earth Class 7 questions and answers provide detailed explanations, diagrams, and structured answers that make complex concepts easier to understand. They help clarify the structure of the Earth and the formation of rocks, aiding in better comprehension.
12. Why is it important to study the Earth's internal structure in Geography Class 7 Chapter 2 Question Answer?
Studying the Earth's internal structure helps students understand the dynamic processes that shape our planet as discussed in Geography Class 7 Chapter 2 Question Answer. It also provides insights into natural phenomena such as earthquakes and volcanic eruptions.
13. How do you use the solution in exam preparation in class 7th Geography Chapter 2?
The NCERT Class 7 Geography Chapter 2 offers well-organised and concise answers to textbook questions, which are crucial for exam preparation. They help students familiarise themselves with the type of questions that may appear in exams and the best ways to answer them.
14. What role do the interactive exercises play in learning in NCERT Geography Class 7 Chapter 2 PDF?
The interactive exercises included in the NCERT geography class 7 chapter 2 PDF solutions engage students actively, making the learning process more enjoyable and effective. They help reinforce the concepts learned and provide practical applications of theoretical knowledge.
