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முதற்பக்கம்

4.2 Investigates the mechanisms that contribute to maintaining the balance of the ecosystem

  1. முதற்பக்கம்
  2. பாடநெறிகள்
  3. Eg11_Sci
  4. 15.Biosphere
  5. 4.2 Investigates the mechanisms that contribute to maintaining the balance of the ecosystem

Table of Contents

பொது
  • Announcements
  • Teacher's Instructional Manual
  • Smart Text Book
  • Competency 2.0 Investigate matter, properties of matter and their interaction to enhance the quality of life.
  • Competency level - 2.9 , 2.10
  • Competency 3.0 - Utilizes various forms of energy, their interaction with the matter & energy transformation by maintaining efficiency and effectiveness at optimum level.
  • Competency 4.0- explores the nature, properties and processes of earth and space by understanding natural phenomena for intelligent and sustainable use.
  • Announcements
1.Living tissues
  • Text Book
  • Living Tissues
  • Unit Test - Nalanda College, Colombo 10
2.Photosynthesis
  • Text Book
  • Unit Test - Nalanda College, Colombo 10
3.Mixtures
  • Text Book
  • Unit Test - Nalanda College, Colombo 10
4.Waves and Their Applications
  • Text Book
  • Unit Test - Nalanda College, Colombo 10
5.Geometrical Optics
  • Text Book
  • Unit Test - Nalanda College, Colombo 10
  • Geomectrical Optics
  • Practice principles and laws of optics for daily needs and scientific purposes"
6.Biological processes in human body
  • Text Book
  • Unit Test - Nalanda College, Colombo 10
  • 6.1 Biological Processes in Human Body
  • Biological Processes in Human Body
7.Acids, Bases and Salts
  • Text Book
  • Acids, Bases and Salts
  • Unit Test - Nalanda College, Colombo 10
8.Heat Changes Associated with Chemical Reactions
  • Text Book
  • Unit Test - Nalanda College, Colombo 10
9.Heat
  • Text Book
  • Unit Test - Nalanda College, Colombo 10
10.Power and Energy of Electric Appliances
  • Text Book
  • Unit Test - Nalanda College, Colombo 10
11.Electronics
  • Text Book
  • Unit Test - Nalanda College, Colombo 10
  • 3.6 Use the knowledge of electronics in day-to-day activities and scientific works
12.Electrochemistry
  • Text Book
  • Unit Test - Nalanda College, Colombo 10
  • 2.0 Investigate matter, properties of matter and their interaction to enhance the quality of life.
  • 2.8 Investigates the process of corrosion
13.Electromagnetism and Electromagnetic Induction
  • Text Book
  • Unit Test - Nalanda College, Colombo 10
  • Study pack
  • 3.7 Investigate the phenomenon of electromagnetic induction and uses of it.
  • 3.8 Investigate the phenomenon of electromagnetic induction and uses of it.
14.Hydrocarbons and Their Derivatives
  • Text Book
  • Unit Test - Nalanda College, Colombo 10
  • 2.9 Investigates the nature and uses of hydrocarbons and their derivatives
  • 2.10: Explores the diversity of polymers
15.Biosphere
  • Text Book
  • Unit Test - Nalanda College, Colombo 10
  • Study pack
  • 4.1 Investigates the organizational level of the biosphere and interactions existing with it.
  • 4.2 Investigates the mechanisms that contribute to maintaining the balance of the ecosystem
  • 4.3 Explores various types of pollutants and their adverse effects.
  • 4.4 Explores the effects of change in life style
  • 4.5 Investigates on ways to contribute to sustainable development.
Past Question papers
  • Third Term Test 2015
  • Third Term Test (Answers) 2015
  • Second Term Test 2016 - Western Province
  • Third Term Test 2016 - Western Province
  • Third Term Test 2016 - Devi Balika Vidyalaya, Colombo
  • Second Term Test 2018 - Western Province II
  • Second Term Test 2018 - Western Province I
  • First term western province I paper 2018
  • First term western province II paper-partA 2018
  • First term western province II paper-partB 2018
  • First term western province I paper 2019
  • First term western province II paper 2019
  • Second Term Kelaniya Division I,II Paper 2016
  • Study Pack 2 -Grade 11- Science-2nd Week -March 2020 -Musaeus College-Colombo
  • First Term Test I,II Paper & Answer North Western Province 2018
  • 2nd Term Test I,II Paper & Answer North Western Province 2018
  • 3rd Term Test I,II Paper & Answer North Western Province 2018
  • 3nd Term Test I,II Paper & Answer North Western Province 2019
  • 2nd Term Test I,II Paper & Answer North Western Province 2019
  • 1st Term JHC - 2022
  • 3rd Term Test I,II Paper & Answer North Western Province 2020
  • 2nd Term Test I,II Paper North Western Province 2023
Completion requirements
◄ 4.1 Investigates the organizational level of the biosphere and interactions existing with it.
4.3 Explores various types of pollutants and their adverse effects. ►
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