Notes and Study material for Exams
The pH of natural rain is found to be in the range from 5 to 7. The term Acid Rain is customarily applied to Precipitation with a pH below 5. Such low pH values are generally possible only in the presence of large amounts of anthropogenic pollution. Sulphuric acid and nitric acid is considered as … Read more
ENVIRONMENT POLLUTION is defined as ‘an addition or excessive addition of certain materials to the physical environment (water, air and lands), making it less fit or unfit for life’. Pollutants are the materials or factors, which cause adverse effect on the natural quality of any component of the environment. Classifications According to the form in … Read more
Urbanization is the Growth in Population residing in urban areas, due to both growth in population of current residents and net Migration into urban areas. It also encompasses a transformation of the erstwhile rural areas into ‘urban’ areas through changes in population density and the EMPLOYMENT profile from a primarily agrarian and agro-based employment … Read more
Elements of Climate and weather Climate is decided by a region’s climate system. A climate system has few major components: the Atmosphere, the layer, the cryosphere, and the land surface. The atmosphere is that the most variable a part of the climate system. The composition and movement of gases encompassing the planet will change … Read more
The major causes of the Environmental Degradation are modern Urbanization, industrialization, over-Population Growth, deforestation etc. Environmental pollution refers to the degradation of quality and quantity of natural Resources. Mahatma Gandhi’s principle of “enoughness” in his saying “the earth provides enough to satisfy every persons need but not for every person’s greed” According to World Commission … Read more
Environmental legislation The awareness and consideration for Environment covers several environmental issues such as pollution of water, air and Soil, land degradation, industrialization, Urbanization, depletion of natural Resources etc. Environmental Law plays a very crucial and important role in regulating the use of Natural Resources and in protecting the environment. The success of … Read more
The enhanced pace of developmental activities and rapid Urbanization have resulted in Stress on natural Resources and Quality Of Life. The trend of increasing pollution in various environmental media is evident from the deteriorating air and water quality, higher noise levels, increasing vehicular emission etc. Realising the urgent need for arresting the trend, Both Central … Read more
aggravated because of four developments: Increasing traffic, growing cities, rapid Economic Development, and industrialization contamination of air by the discharge of harmful substances Major air pollutants and their sources Carbon monoxide (CO) It is a colourless, odourless gas that is produced by the incomplete burning of carbon – based fuels including petrol, diesel, … Read more
Climate Change It is the long term change in the statistical distribution of weather patterns over periods of time Though it has been happening naturally for millions of years, in recent years it has accelerated due to anthropogenic causes and has been causing Global Warming. UNFCCC defines Climate Change as – “a change of climate … Read more
Medium of Propagation Sound is a sequence of waves of pressure which propagates through compressible media such as air or water. During their propagation, waves can be reflected, refracted, or attentuated by the medium. The purpose of this experiment is to examine what effect the characteristics of the medium have on sound. Ground Wave or … Read more