upper air flow

When an object moves through a fluid, there will be friction due to the resistance of the material medium. This resistance increases with the velocity of the body as in the case of a rocket and aeroplane. Hence to minimize this friction due to the resistance of the medium, the bodies of aeroplanes..

a) Checking the air pollution by strict imposition of laws on factories. b) Reducing vehicular traffic and encouraging public transport vehicles than individual vehicles. c) Use of unleaded petrol. d) Regular check of exhaust gases from vehicles to declare their status in respect of poll..

Presence of Carbon Dioxide in Air - Another important constituent of air is carbon dioxide. As stated before, plants use it to synthesize carbohydrates, a basic food for all of us. It is also one of the green house gases that help to retain the warmth of the suns rays on earth, ..

The air flows smoothly past the wing and the drag is very small. The air strikes the wing at a greater angle and the drag is increased. The air is stirred up, or the air 'burbles' and the drag is very great..

Solar energy is responsible for the blowing of wind. The intensity of sun-rays is stronger near the Equator than at the Polar Regions. Due to unequal heating of the earth's surface, cooler air from the Polar Regions flow towards the equatorial regions to fill the space created..

A steady decrease in temperature occurs from the ground temperature to about 210 K with the increase in altitude in this region. Due to a fall of pressure and density of air, the temperature falls. This feature extends to about 12 km from the surface and its upper limit is call..

Environment of earth includes the whole of atmosphere, hydrosphere as related to biosphere. Therefore, environment includes nature, composition of air, characters of hydrological parameters, sunshine, air pressure, temperature, water resources - their storage and flow..

These are plants that grow in water or in very wet places. They may be floating, rooted and floating or submerged. The following are the adaptations found in this group. Root - The root system is poorly developed as in Eichhornia or absent as in Ceratophyllum Stem - The stem may be reduced as in Le..

Lungs are the respiratory organs. The passage way for air is formed by external nostrils, pharynx, larynx, trachea and bronchi. Lungs contain large number of minute alveoli in which external respiration takes place. Surrounding the lungs and the heart is a thoracic cage containing l..

Ozone is an allotropic form of oxygen. Its molecular formula is O 3 and molar mass is 48 g mol - 1 . Schonbein (1840) concluded that Van Marums observations in 1785 of a peculiar smell, when an electric discharge was passed through oxygen (or air), was in fact a new gas. He named it Ozone..