Introduction to Environmental Management | Class 10 Science

Introduction - Environmental Management

Tags: Environmental Management, 10th Science : Chapter 22 : Environmental Management

ENVIRONMENTAL MANAGEMENT

Introduction

Environmental management deals with the different aspects of environment, its structure, function, its quality and its maintenance including conservation of its living and non -living components. The diversified natural resources on this earth provide the necessities for survival of all forms of life including man. Everything that comes from nature has some utility for man but its utilization is possible based on the availability of appropriate technology.

Resources can be renewed simultaneously along with their exploitation (forests, crops, wildlife, groundwater, wind and solar energy) . They can maintain themselves by natural recycling or can be replenished by proper management. Simultaneously, non-renewable resources cannot be recycled and can get exhausted by unlimited and continous use (mineral ores, coal, petroleum etc). They cannot be replaced easily. This would lead to a situation where non- renewable resources may come to an end after a certain period of time.

Expanding human population resulted in expanding needs of man. With scientific and technological advancement man started utilizing natural resources at a much larger scale. Continuous increase in population caused an increased demand for resources. Therefore, conservation of natural resources makes important contributions to the social and economic development of the country.

Conservation and Judicious Use of Natural Resources | Environmental Management

Conservation and Judicious Use of Resources

10th Science | Chapter 22: Environmental Management

Conservation and Judicious Use of Resources

Natural resources are conserved for their biological, economic and recreational values. The use of natural resources in excess and unplanned way leads to imbalance in the environment. A judicious balance should be maintained between exploitation of resources and its replenishment. Proper utilization and management of nature and its resources is termed as conservation.

We have to build a sustainable world, which should last forever. Some of the ways to sustain continuous use of resources are practices to utilise energy efficiently, avoid wastage of water, avoid usage of plastics and other non-biodegradable materials and to take care for the environment we live. It is important that we manage and use our resources carefully so as to preserve for the future generations.

Forest and its Importance: Class 10 Science Environmental Management

Conservation and Judicious Use of Resources

10th Science | Chapter 22: Environmental Management

Conservation and Judicious Use of Resources

Natural resources are conserved for their biological, economic and recreational values. The use of natural resources in excess and unplanned way leads to imbalance in the environment. A judicious balance should be maintained between exploitation of resources and its replenishment. Proper utilization and management of nature and its resources is termed as conservation.

We have to build a sustainable world, which should last forever. Some of the ways to sustain continuous use of resources are practices to utilise energy efficiently, avoid wastage of water, avoid usage of plastics and other non-biodegradable materials and to take care for the environment we live. It is important that we manage and use our resources carefully so as to preserve for the future generations.

Renewable and Non-Renewable Energy Resources | Environmental Management

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10th Science : Chapter 22 : Environmental Management

Renewable and Non-Renewable Energy Resources

Energy is an important input for development. The expansion of possible energy resources has been directly related with the pace of agricultural and industrial development in every part of the world. Energy resources can be classified as non-renewable and renewable.

Non-renewable (Exhaustible) energy resources

Energy obtained from sources that cannot renew themselves over a short period of time is known as non-renewable energy. These are available in limited amount in nature. They include coal, petroleum, natural gas and nuclear power. These conventional energy resources account for 90% of the world’s production of commercial energy and nuclear power account for 10%.

Renewable (Inexhaustible) energy resources­

These energy resources are available in unlimited amount in nature and they can be renewed over a short period of time, inexpensive and can be harvested continuously. These comprise the vast potential of non-conventional energy resources which include biofuel, biomass energy, geothermal energy, water energy (hydroelectric energy and tidal energy), solar energy, wave energy and wind energy.

1. Fossil Fuels

Fossil fuels are found inside the earth’s crust and are energy rich substances formed by natural process, such as anaerobic decomposition of buried dead organisms, over millions of years. As the accumulating sediment layers produce heat and pressure, the remains of the organisms are gradually transformed into hydrocarbons. e.g. petroleum, coal and natural gas.

2. Coal and Petroleum

Coal and Petroleum are natural resources. They are called fossil fuels as they are formed from the degradation of biomass buried deep under the earth millions of years ago.

Coal is used for generation of electricity at Thermal power plants. Petroleum also known as crude oil is processed in oil refineries to produce petrol and diesel which are used to run automobiles, trucks, trains, ships and airplanes etc. Kerosene and LPG (Liquefied Petroleum Gas) obtained from petroleum is used as domestic fuel for cooking food.

The coal and petroleum reserves can get exhausted if we continue using them at a rapid rate. The formation of these fossil fuels is a very slow process and takes very long period of time for renewal.

3. Steps to Conserve Coal and Petroleum ­Resources

It is necessary to conserve or save coal and petroleum resources for the future use, which can be done by reducing their consumption.

1. If electricity is saved, it will inturn reduce the use of coal
2. Using bicycle for covering short distances instead of using cars, scooters or motorcycles
3. Using pressure cooker can reduce the consumption of kerosene and LPG while cooking food. Solar cooker and solar heaters can be used wherever possible
4. Motor vehicles should be designed with fuel efficient engines to increase efficiency and also reduce air pollution

Key Concepts in Environmental Management | Science Explained`

Points to Remember - Environmental Management | Science

Environmental Management (Science)

Points to Remember

• Conservation is a process which is concerned with the use, preservation and proper management of natural resources from destructive activities of human being.
• Conservation of natural resources contributes to the social and economic development of the country.
• Forests of a country constitute a major asset for the people of the country.
• National park is a reserved area for the conservation of entire wildlife including plants and animals.
• Sanctuary is a place reserved exclusively for the use of animals.
• Solar cell is a device that absorbs sunlight and converts it into electric energy.
• Solar water heater does not require electricity, they heat up water directly from sunlight.
• Biogas is produced by the anaerobic decomposition of cow dung.
• The technique of collecting and storing rain water for future purpose is known as rainwater harvesting.
• Unwanted, non-working and outdated electronic products become e-waste.

Concept Map: Environmental Management