Environmental Studies Past Paper PDF Maharashtra State Board

Course- ENVIRONMENTAL STUDIES Course Code – 22447 Topic – 1 CO-a: Develop Public Awareness Environment about Environment. Unit Outcome- UO 1a,1b, and 1c MSBTE LEAD- STUDY AT YOUR DOORSTEP Written...

Course- ENVIRONMENTAL STUDIES Course Code – 22447 Topic – 1 CO-a: Develop Public Awareness Environment about Environment. Unit Outcome- UO 1a,1b, and 1c MSBTE LEAD- STUDY AT YOUR DOORSTEP Written by Click icon to add picture  What we will learn today Understand about environment 1. Agenda point – and its segments. Environment , its need and Scope. Content 2. Agenda point – 1.1 Definitions. need of Segments of environmental studies. Environment 1.2 Segments of environment-Atmosphere, Hydrosphere Click icon to add picture Lithosphere, Biosphere. Page 2 Maharashtra State Board of Technical Education January 28, 2025  Learning Objective/ Key learning  1a. Discuss the scope of environment.  1b. Describe various types of environment 1c. Describe the importance of environmental studies. Page 3 Maharashtra State Board of Technical Education January 28, 2025  Concept Map of Environment Page 4 Maharashtra State Board of Technical Education January 28, 2025  UNIT 1: ENVIRONMENT Environm ent  The word environment is derived from the French verb ‘enviro’ which Biotic means ‘surrounding’. Thus, our Abiotic Compone environment can be defined as the Components nts Living Non- physical, chemical and biological Thing Living world that surround us. s  In Simple way the Environment is A place Things e.g. People, e.g. Play ground, around us includes people, children, benches, Children, Trees, Benches, Swings, ground, grass, trees, insects, birds, sunlight, air, Grass, Plants, Slide, Air, Water, land, water, mountain etc. insects, Birds etc. Mountain etc.  Biotic components constantly interact and exchange things with each other as well as with an A biotic components for their survival and existence [2; 4; 5]. Footnotes Page 5 Maharashtra State Board of Technical Education January 28, 2025 Types of Environment Natural Man-made Social Psychologi Environm Environme Environme cal ent nt nt Environme The environment Social Every individual has his The nt changed or Environment own psychological environment includes an environment, in which he modified by the in its original individual’s lives. form without interference of human beings is social, The Psychological the economic and environment enables us to interference of called man made political understand the human beings environment. condition personality of an is known as e.g., wherein he individual. Both the natural Infrastructure, lives. person and his goal from environment. Utilities, e.g., Customs, psychological All living and Institutions, Traditions, environment ethics, nonliving housing, industries Language, things , parks, buildings, Culture, occurring Page 6 energy networks, Professions, Maharashtra State Board of Technical Education January 28, 2025 STRUCTURE OF ENVIRONMENT : Physical Biological Environment Environment (i) Solid - The lithosphere (solid i) Plants (flora): trees, grass, shrubs etc. earth) : Soil / land and Mountain (ii) Animals (fauna) : domestic and wild Environment animals, humans, birds, insects etc [2; (ii) Liquid - The hydrosphere (water 4]. component) : River, Reservoir, Oceans and Glacier Environment (iii) Gas - Various gases (oxygen, carbondioxide, nitrogen, méthane etc. present in atmosphere. Page 7 Maharashtra State Board of Technical Education January 28, 2025  SCOPE OF ENVIRONMENTAL STUDIES  This subject educates the students, citizens and experts to understand the complexity of environmental issues.  Experts having knowledge in the environmental fields that enables them to facilitate the solution of environmental problems.  The current trend of environmental degradation can be reversed if people of educated communities are organized and empowered.  By knowing this subject we can develop eco-friendly new technologies for various developments which can save the natural resources as well as reduces environmental pollutions and public health impacts.  As, the new earth is not discovered till now we have no other option except to maintain the ecological balance on the planet Earth so that the liveable environment should be kept for our future generations.  The major areas in which the role of environmental scientists are of vital importance are natural resources, ecosystems, biodiversity and its conservation, environmental pollution, social issues , human population and environment [2; 4; 5]. Page 8 Maharashtra State Board of Technical Education January 28, 2025  NEED AND IMPORTANCE OF ENVIRONMENTAL STUDIES: Public awareness. Environment issues being of international importance. Problems cropped in the wake of development. Conserve energy. For an alternative solution. Save species from extinction. Save the natural resources. Reduce the pollution. Wise planning of development. Sustainable development [2; 4; 5] Page 9 Maharashtra State Board of Technical Education January 28, 2025  SEGMENTS OF ENVIRONMENT The atmosphere is composed of nitrogen and oxygen. Besides, argon, carbon dioxide, and other trace gases. Biosphere: Biosphere Hydrosphere: The indicates the realm of living Hydrosphere comprises all organisms and their types of water resources interactions with oceans, seas, lakes, rivers, environment, viz streams, reservoir, polar atmosphere, hydrosphere icecaps, glaciers, and and lithosphere. ground water. Lithosphere: Lithosphere is the outer mantle of the solid earth. It consists of minerals occurring in the earth’s crusts and the soil e.g. minerals, organic matter, air and water. Page 10 Maharashtra State Board of Technical Education January 28, 2025  SEGMENTS OF ENVIRONMENT Atmosphere: The atmosphere implies the protective blanket of gases, surrounding the earth: (a) It sustains life on the earth. (b) It saves it from the hostile environment of outer space. (c) It absorbs most of the cosmic rays from outer space and a major portion of the electromagnetic radiation from the sun. (d) It transmits only here ultraviolet, visible, near infrared radiation (300 to 2500 nm) and radio waves. (0.14 to 40 m) while filtering out tissue-damaging ultra violate waves below about 300 nm [2; 4] Source: vectorstock.com Page 11 Maharashtra State Board of Technical Education January 28, 2025  SEGMENTS OF ENVIRONMENT Hydrosphere: The Hydrosphere comprises all types of water resources oceans, seas, lakes, rivers, streams, reservoir, polar icecaps, glaciers, and ground water. 71 % of earth area is covered by water. (i) Nature 97% of the earth’s water supply is in the oceans, (ii) About 2% of the water resources is locked in the polar icecaps and glaciers. (iii) Only about 1% is available as fresh surface water-rivers, lakes streams, and ground water fit to be used for human consumption and other uses. Lithosphere: Lithosphere is the outer mantle of the solid earth. It consists of minerals occurring in the earth’s crusts and the soil e.g. minerals, organic matter, air and water. Biosphere: Biosphere indicates the realm of living organisms and their interactions with environment, viz atmosphere, hydrosphere and lithosphere [2; 5]. Page 12 Maharashtra State Board of Technical Education January 28, 2025  Revision ► What we have leaned today? ► Environment its definition and scope. ► Types of environment. ► Structure of environment. ► Needs and importance of environment. ► Segments of environment. Now let’s have a Quiz...... Page 13 Maharashtra State Board of Technical Education January 28, 2025  References 1. Dr Prabhu Prasadini and Dr G. Swarajya Lakshmi, ENVIRONMENTAL SCIENCE, BIRM 301 Study Material. 2. Dr. Y. K. Singh, 2006. Environmental Science. NEW AGE INTERNATIONAL (P) LIMITED, PUBLISHERS, New Delhi, India. 3. Rokonuzzaman M. S., 2014. Types of Environment, Department of Geology and Environment, Dhaka, Bangladesh. 4. Prof. Erach Bharucha, 2004. Textbook for Environmental Studies. University Grants Commission, New Delhi. India. 5. Michael Aaleby, 2000. Basics of Environmental science, 2nd Edition, Taylor & Francis Group, New York. 6. www.vectorstock.com, Accessed on 02/07/2020. Page 14 Maharashtra State Board of Technical Education January 28, 2025  THANK YOU ALL HAVE A NICE DAY HAPPY LEARNING Page 15 Maharashtra State Board of Technical Education January 28, 2025