Mycollegebag
  • Study Materials
    • English Worksheets
    • Maths Worksheet
    • EVS Worksheets
    • Hindi Worksheets
    • UKG Worksheet
    • LKG Worksheet
    • HC Verma Solutions
    • NCERT Solutions >
      • Class 10th NCERT Solution
      • Class 11 NCERT Solution
      • Class 12 NCERT Solution
    • NCERT Books
    • H C Verma Solution for Short Questions
    • RD Sharma Solution >
      • RD Sharma Class 12
      • RD Sharma Class 11
      • RD Sharma Class 10
      • RD Sharma Class 9
      • RD Sharma Class 8
      • RD Sharma Class 7
      • RD Sharma Class 6
    • RS Aggarwal Solutions
    • OP Tandon Solution
    • IE Irodov Solutions
    • Lakhmir Singh Solution
    • ML Khanna Solution
    • Resnick Halliday Solution
    • CBSE Notes
  • Career
    • Engineering Resume Samples
    • Management Resume Samples
    • Graduate Resume Samples
    • Teachers Resume
    • Resume Builder
    • GMAT Papers
    • KVPY Papers
    • IBPS Question Papers
    • GRE Papers
    • SBI PO Papers
    • SAT Papers
    • Toefl Papers
    • ACT Papers
    • IELTS Papers
  • Class 10
    • CBSE Class 10
    • ICSE Class 10 Papers
    • BSEH Class 10 previous Papers
    • AP SSC Class 10 previous Papers
    • Kerala SSLC Class 10 previous Papers
    • RBSE Class 10 previous Papers
    • PSEB Class 10 previous Papers
    • Goa SSC Class 10 previous Papers
    • UP Class 10 previous Papers
    • Bihar Class 10 previous Papers
    • WB Class 10 previous Papers
    • Assam Class 10 previous Papers
    • Arunachal Class 10 previous Papers
    • Manipur Class 10 previous Papers
    • Nagaland Class 10 previous Papers
    • Mizoram Class 10 previous Papers
    • Sikkim Class 10 previous Papers
    • TBSE Class 10 previous Papers
    • MP Class 10 previous Papers
    • CG Class 10 previous Papers
    • Odisha Class 10 previous Papers
    • MH Class 10 previous Papers
    • GSEB Class 10 previous Papers
    • KSEEB SSLC Class 10 previous Papers
  • Class 12
    • CBSE Class 12 Question Papers
    • ISC Previous Year Paper >
      • ISC English
      • ISC Hindi
      • ISC Physics
      • ISC Chemistry
      • ISC Biology
      • ISC Accountancy
      • ISC Mathematics
      • ISC Economics
      • ISC Commerce
      • ISC Computer Science
    • UP Board Class 12
    • Bihar Board Class 12th Paper
    • MP Board Papers
    • CG Board Class 12
    • TN Board Class 12
    • MH HSC papers
    • Karnataka Board HSC Papers
    • WB Class 12 Papers
    • Kerala HSC Papers
    • Himachal Class 12th Paper
    • Assam Class 12th Paper
    • UK Board Class 12th Paper
    • RBSE Class12 Paper
    • Gujarat Board Class 12 Papers
    • Goa Board Class 12th Paper
    • Punjab Class 12th Paper
    • AP Board Class 12 Papers
    • Haryana Board Class 12th Paper
    • Delhi Board Class 12th Paper
    • Telangana Board 12th Papers
    • Jharkhand Class 12th Paper
    • Jammu & Kashmir Class 12th Paper
    • Orissa Class 12th Paper
  • Medical
    • AIIMS Paper
    • JIPMER Paper
    • AFMC MBBS Question Papers
    • CMC MBBS Question Papers
    • AIPMT Papers
  • Engineering
    • JEE Main Question Papers
    • AIEEE Question Paper
    • BITSAT Papers
    • UPTU-UPSEE Papers
    • MHT CET Papers
    • MP PET Papers
    • CG PET Papers
    • KCET Papers
    • TS EAMCET Papers
    • AP EAMCET Papers
    • KEAM Papers
    • GOA CET Papers
    • GUJCET Papers
    • RPET Papers
  • MBA
    • XAT Papers
    • CAT Papers
    • IIFT Papers
    • MAT Papers
    • SNAP Papers
    • CMAT Papers
    • NMAT Papers
    • IGNOU Open MAT Papers


CBSE Class 7 Chemistry Notes- Chapter 5 Water

5/27/2018

0 Comments

 
CHAPTER 5 WATER
 
About 71% of earth’s surface is covered in water but most of it cannot be consumed as it is in the oceans and seas. The water in the oceans and seas is too salty to be consumed. Only the freshwater available in rivers and lakes is fit for consumption. Freshwater is about 0.006% of the total water and even this water is being quickly used up.
 
FORMS OF WATER
Water exists in all three forms:
(i) Solid: As snow and ice in the glaciers and ice caps
(ii) Liquid: In oceans, seas, rivers, lakes, groundwater
(iii) Gas: As water vapour in the atmosphere
 
The continuous cycle of water among its three forms is called water cycle
 
GROUNDWATER
Water seeps into the ground through the process of ‘infiltration’ and gets stored as ground water. The upper limit of ground water is called the water table.
Depletion of water table
 Ground water is drawn and used for everyday purposes. Excessive usage of ground water leads to depletion of water table. The major reasons for depletion of water table are:
  • Increasing population
  • Increasing industries
  • Agricultural activities
 
DISTRIBUTION OF WATER
The distribution of water is uneven due to climatic conditions and uneven rainfall,
 
WATER MANAGEMENT
We have limited amount of water available and therefore it must be managed carefully. It is important to follow practices such as rain water harvesting, drip irrigation, etc. so as to save water.
0 Comments



Leave a Reply.

    Categories

    All
    Accountancy
    Biology
    Business Studies
    CBSE Class 10 Biology Notes
    CBSE Class 10 Chemistry Notes
    CBSE Class 10 Maths Notes
    CBSE Class 10 Physics Notes
    CBSE Class 11 Biology Notes
    CBSE Class 11 Chemistry Notes
    CBSE Class 11 Maths Notes
    CBSE Class 11 Physics Notes
    CBSE Class 12 Biology Notes
    CBSE Class 12 Chemistry Notes
    CBSE Class 12 Maths Notes
    CBSE Class 12 Physics Notes
    CBSE Class 7 Maths Notes
    CBSE Class 7 Science Notes
    CBSE Class 8 Maths Notes
    CBSE Class 8 Science Notes
    CBSE Class 9 Biology Notes
    CBSE Class 9 Chemistry Notes
    CBSE Class 9 Maths Notes
    CBSE Class 9 Physics Notes
    Chemistry
    Class 6 Maths Notes
    Class 6 Science Notes
    Computer Science
    Economics
    English
    Geography
    Hindi Core
    Hindi Elective
    History
    Maths
    Physics
    Website And Multimedia

Subscribe to Get Updates

Subscribe

Board Exams

CBSE Class 10 Question Papers

CBSE Class 12 Question Papers

ICSE Class 10 Question Paper

​ISC Class 12 Question Papers

Resume

Engineering Resume

Management Resume

General Graduate Resume

Teacher's  Resume

JEE Question Papers

BITSAT  Question Papers

NEET UG Question Papers

JIPMER Question Papers

AIIMS Question Papers


​

GRE Question Papers

CAT Question Papers

XAT Question Papers

MAT Questions

​GMAT Questions

NCERT

Solutions

​NCERT Class 10 Solutions

HC Verma Solutions

Privacy Policy

​NCERT Class 11 Solutions

RS Aggarwal Solutions

Terms & Conditions

NCERT Class 12 Solutions​

RD Sharma Solutions

Sitemap

CBSE Class 10 Notes

IE Irodov Solutions

Contact Us

CBSE Class 12 Notes

Worksheets for Kindergarten

Resnick Halliday Solutions

© mycollegebag.in 2020, All Rights Reserved