air zone international

These are shared by all nations. Examples: Air and solar energy. Study of natural resources can be treated to have run parallel to course of human development as well as parallel to the course of evolution of science itself. The study of natural resources has been an inseparable part of ..

Let us consider a ray of light passing from glass to air, that is from a denser medium to a rarer medium. The figure shows that for a small angle of incidence, major part of the incident light is refracted and a small portion is reflected. The refracted ray bends away from the normal afte..

Mirage is an optical illusion, which occurs usually in deserts on hot summer days. On such a day, temperature of air near the earth is maximum and hence is rarer or lighter. The upper layers of air, which are relatively cool, are denser. A ray of light from the top of a tree t..

Cloud formation, lightning, thunder etc all take place in the troposphere. Air temperature in troposphere decreases with height at the rate of about 615 0 C per km.Stratosphere is free from clouds. Aeroplanes usually fly in this zone..

The mirage is caused by the total internal reflection of light at layers of air of different densities. In a desert, the sand is very hot during day time and a result the layer of air in contact with it gets heated up and becomes lighter. The lighter air..

Contamination of radioactive substances such as wastes of uranium and thorium can be carried into water from nuclear power plants, during their mining and refining processes. Scientific and medical institutions, which utilize radioactive materials can also contaminate water bodies. These substance..

Earth is the only planet on which life exists. It consists of three components Lithosphere (Land), Hydrosphere (Water) and Atmosphere (Air). Life originated and evolved because of this unique combination of the three components and was ideal and favourable for life. The life support..

A thick gaseous envelope surrounding the earth is called atmosphere. The density of air in the atmosphere varies with altitude. It filters sunlight reaching the earth, affects climate and serves as a reservoir of elements essential for life (eg. oxygen, nitrogen, CO 2 etc.) Atmosphere is ..

The mirage is caused by the total internal reflection of light at layers of air of different densities. In a desert, the sand is very hot during day time and a result the layer of air in contact with it gets heated up and becomes lighter. The lighter air rise..

Construction of sound proof rooms for noisy machines in industries. Use of horns with jarring sounds to be banned. Noise producing industries, aerodromes, and railway stations to be shifted away from the inhabited areas. Proper law should be enforced to check the misuse of loudspeakers a..