CBSE Class 8 Disaster Management Earthquakes

Read and download CBSE Class 8 Disaster Management Earthquakes in NCERT book for Class 8 Social Science. You can download latest NCERT eBooks chapter wise in PDF format free from Studiestoday.com. This Social Science textbook for Class 8 is designed by NCERT and is very useful for students. Please also refer to the NCERT solutions for Class 8 Social Science to understand the answers of the exercise questions given at the end of this chapter

NCERT Book for Class 8 Social Science Earthquakes

Class 8 Social Science students should refer to the following NCERT Book Earthquakes in Class 8. This NCERT Book for Class 8 Social Science will be very useful for exams and help you to score good marks

Earthquakes NCERT Book Class 8

EARTHQUAKES

An earthquake in simple terms is a sudden trembling or shaking movement of the earth’s surface, called the crust. Most earthquakes are minor tremors. Larger earthquakes usually begin with slight tremors but rapidly take the form of one or more violent shocks, and end in vibrations of gradually diminishing force called aftershocks. The subterranean point of origin of an earthquake is called its focus; the point on the surface directly above the focus is the epicenter. The magnitude and intensity of an earthquake is determined by the use of scales, such as the Richter scale and the Modified Mercalli scale.

Why do earthquakes happen?

The earth’s crust is made of massive interlocking blocks of rock called tectonic plates, which resemble a jigsaw puzzle. These blocks float on a layer of semi-liquid rock called the mantle. This flowing semi-liquid rock causes the blocks in the crust to move against or relative to each other. As tectonic plates collide or move, pressure is built up.

This pressure is released when these plates slip or slide relative to each other, resulting in a fault. These movements cause vibrations to pass through and around the earth in waveform, just as ripples are generated when a pebble is dropped into water. Earthquakes are natural phenomena. They cause the most sudden of all disasters, without any warning time. Floods and cyclones, the hazards that cause the other major sudden disasters have a warning period, and hence can be anticipated to some extent, allowing for evacuation and protection. Earthquakes happen without notice, and are not predictable or preventable. We can however reduce the damage that they can cause. Most of the damage is caused not by the earthquake itself, but by the buildings that we live in, especially in urban or semi urban areas with concrete structures. The picture shows a high-rise building succumbing to the Gujarat earthquake in 2001 because the required structural engineering norms were not adhered to during construction and design of this building.

How are people affected by earthquakes?

The effects of earthquakes are diverse. People are more likely to die or be injured where large numbers of people live close together, and where local buildings are not designed to resist earthquakes. About 95 per cent of people killed in an earthquake are killed by falling buildings. Earthquakes are most dangerous when they happen at night. This is because people may sleep through the first tremors (foreshocks), and so have less time to prepare. Also, lying flat in bed means that you are more likely to be hit by falling objects than if you are standing up. The effects of an earthquake are strongest in a broad zone surrounding the epicentre.

An earthquake can cause other dangerous events, such as landslides, floods, fires, and huge ocean waves called tsunamis. Why are some people more at risk from disasters than others? Simply, Some people are more at risk because of where they live. Others may be more at risk because of their socio-economic situation. Certain types of disasters are specific to certain geographical areas. Earthquakes commonly happen along a geological fault (a place where two sections of the earth’s crust join). Other types of natural hazards, such as flooding, are widespread across the globe.

Earthquake vibrations last longer and are of greater impact in unconsolidated surface material, such as poorly compacted fill (loose soil) or river deposits; bedrock areas receive fewer effects. Hence, flexible structures built on bedrock are generally more resistant to earthquake damage than rigid structures built on loose soil. When disaster strikes, the poor are usually the worst affected. This is because they are likely to have less choice about where they live, and many poor communities are forced to settle on dangerous land – on steep hillsides, or in river floodplains for example. In poorer regions, people often build their own houses, and may not have access to information about how to make their homes safer. Even when people do have information, they may not be able to afford stronger, better-quality building materials.

After a disaster, poorer people find it hard to recover. The physical injuries and destruction, the loss of livelihoods can have serious long-term consequences. If people lose vital tools, or means of transport, then they will have no way to support themselves and their families for the future. They are usually people with no insurance, and will probably have to make do with whatever they can find. They may find it very difficult to regain the position they were in before the disaster struck.


Please refer to the link below for - CBSE Class 8 Disaster Management - Earthquakes

Our Past III Chapter 01 How, When and Where
NCERT Class 8 History How When and Where
Our Past III Chapter 02 From Trade to Territory
NCERT Class 8 History From Trade to Territory
Our Past III Chapter 03 Ruling the Countryside
NCERT Class 8 History Ruling the Countryside
Our Past III Chapter 04 Tribals, Dikus and the Vision of a Golden Age
NCERT Class 8 History Tribals Dikus
Our Past III Chapter 05 When People Rebel
NCERT Class 8 History When People Rebel
Our Past III Chapter 06 Weavers, Iron Smelters and Factory Owners
NCERT Class 8 History Weavers Iron Smelters
Our Past III Chapter 07 Civilising the Nativeù, Educating the Nation
NCERT Class 8 History Civilising the Native
Our Past III Chapter 08 Women Caste and Reform
NCERT Class 8 History Women Caste and Reform
Our Past III Chapter 09 The Making of the National Movement
NCERT Class 8 History The Making of the National Movement
Our Past III Chapter 10 India After Independence
NCERT Class 8 History India After Independence
Resources and Development Chapter 01 Resources
NCERT Class 8 Geography Resource and Development Resources
Resources and Development Chapter 02 Land Soil Water Natural Vegetation and Wildlife Resources
NCERT Class 8 Geography Resource and Development Land Soil Water Natural Vegetation and Wildlife
Resources and Development Chapter 03 Mineral and Power Resources
NCERT Class 8 Geography Resource and Development Mineral and Power Resources
Resources and Development Chapter 04 Agriculture
NCERT Class 8 Geography Resource and Development Agriculture
Resources and Development Chapter 05 Industries
NCERT Class 8 Geography Resource and Development Industries
Resources and Development Chapter 06 Human Resources
NCERT Class 8 Geography Resource and Development Human Resources
Social and Political Life III Chapter 01 The Indian Constitution
NCERT Class 8 Civics Social and Political Life The Indian Constitution
Social and Political Life III Chapter 02 Understanding Secularism
NCERT Class 8 Civics Social and Political Life Understanding Secularism
Social and Political Life III Chapter 03 Why Do We Need a Parliament
NCERT Class 8 Civics Social and Political Life Why Do We Need A Parliament
Social and Political Life III Chapter 04 Understanding Laws
NCERT Class 8 Civics Social and Political Life Understanding Laws
Social and Political Life III Chapter 05 Judiciary
NCERT Class 8 Civics Social and Political Life Judiciary
Social and Political Life III Chapter 06 Understanding Our Criminal Justice System
NCERT Class 8 Civics Social and Political Life Understanding Our Criminal Justice System
Social and Political Life III Chapter 07 Understanding Marginalisation
NCERT Class 8 Civics Social and Political Life Understanding Marginalization
Social and Political Life III Chapter 08 Confronting Marginalization
NCERT Class 8 Civics Social and Political Life Confronting Marginalization
Social and Political Life III Chapter 09 Public Facilities
NCERT Class 8 Civics Social and Political Life Public Facilities
Social and Political Life III Chapter 10 Law and Social Justice
NCERT Class 8 Civics Social and Political Life Law and Social Justice

Social Science NCERT Book Class 8 Earthquakes

The above NCERT Books for Class 8 Social Science Earthquakes have been published by NCERT for latest academic session. The textbook by NCERT for Earthquakes Social Science Class 8 is being used by various schools and almost all education boards in India. Teachers have always recommended students to refer to Earthquakes NCERT etextbooks as the exams for Class 8 Social Science are always asked as per the syllabus defined in these ebooks. These Class 8 Earthquakes book for Social Science also includes collection of question. We have also provided NCERT solutions for Class 8 Social Science which have been developed by teachers of StudiesToday.com after thorough review of the latest book and based on pattern of questions in upcoming exams for Class 8 students.

NCERT Book Class 8 Social Science Earthquakes

The latest NCERT book for Earthquakes pdf have been published by NCERT based on the latest research done for each topic which has to be taught to students in all classes. The books for Class 8 Social Science Earthquakes are designed to enhance the overall understanding of students. All Class 8 NCERT textbooks have been written in an easy to understand language which will help to enhance the overall level of Class 8 students. 

Earthquakes NCERT Book Class 8 Social Science

As the students of Class 8 need the books for their regular studies, we have provided all NCERT book for Earthquakes in pdf here for free download. All pdf NCERT books available here for Class 8 will help them to read on their mobile or computers. They can take a print of the Class 8 Social Science NCERT Book Earthquakes pdf easily and use them for studies. The NCERT textbooks for Class 8 Social Science have been provided chapter-wise and can be downloaded for free of cost. 

Class 8 Social Science Earthquakes NCERT Book

Along with Social Science Class 8 NCERT Book in Pdf for Earthquakes we have provided all NCERT Books in English Medium for Class 8 which will be really helpful for students who have opted for english language as a medium. Class 8 students will need their books in English so we have provided them here for all subjects in Class 8.

Class 8 Earthquakes NCERT Book Social Science

For Class 8 Earthquakes we have provided books for students who have opted for Hindi and Urdu medium too. You can click on the links provided above to download all Hindi medium Class 8 Social Science Earthquakes book in easy to read pdf format. These books will help Class 8 Social Science students to understand all topics and also strictly follow latest syllabus for their studies. If you are looking to download the pdf version of Class 8 Social Science Earthquakes textbook issued by NCERT then you have come to the correct website

Where can I download latest NCERT Book for Class 8 Social Science Earthquakes

You can download the NCERT Book for Class 8 Social Science Earthquakes for latest session from StudiesToday.com

Can I download the NCERT Books of Class 8 Social Science Earthquakes in Pdf

Yes, you can click on the link above and download chapter wise NCERT Books in PDFs for Class 8 for Social Science Earthquakes

Are the Class 8 Social Science Earthquakes NCERT Book available for the latest session

Yes, the NCERT Book issued for Class 8 Social Science Earthquakes have been made available here for latest academic session

How can I download the Class 8 Social Science Earthquakes NCERT Book

You can easily access the link above and download the Class 8 NCERT Books Social Science Earthquakes for each chapter

Is there any charge for the NCERT Book for Class 8 Social Science Earthquakes

There is no charge for the NCERT Book for Class 8 Social Science Earthquakes you can download everything free

How can I improve my scores by reading NCERT Book in Class 8 Social Science Earthquakes

Regular revision of NCERT Books given on studiestoday for Class 8 subject Social Science Earthquakes can help you to score better marks in exams