earth day

. Earth's atmosphere in its present form, is evolved and even now being influenced by earth's movement on its axis as well as sunlight. These two parameters decide what type of atmosphere we have now - its composition as well as the total height of atmospheric cover around the h..

. Scientists estimate that there are about 10 billion trillion stars in the universe. Stars are enormous objects. Even large stars look like tiny dots because they are so far away. The nearest star - other than the sun - is more than 40 million kilometers away. Stars differ greatly in colour and br..

Conservation is defined as judicious use to avoid wastage of materials and degradation of environment. Conservation of environment involves the conservation of the natural resources. The non-renewable resources have to be conserved as they cannot be replenished. The reserves of the resources such a..

According to this theory, all the different forms of life that occur today on planet earth, have been created by God, the almighty. This idea is found in the ancient scriptures of almost every religion. According to Hindu mythology, Lord Brahma, the God of Creation, created the living wor..

The transmission path is limited by the skip distance at one end and the curvature of the Earth at the other. The longest single-hop distance is obtained when the ray is transmitted tangentially to the surface of the Earth, as shown in below figure. For the F 2 layer, this cor..

. Just prior to rainfall especially in early kharif days, the climate is warm and dusty because of thick cloudy cover in air not allowing the earth's reflected radiation to pass through. The air gets heated up due to absorption of long range waves from both direct and reflected ..

Geological Distribution - The organisms show particular patterns of distribution on earth. The distribution of the species give an indication of how the earth was earlier. It is believed that the earth was a single mass called the Pangea. It consisted of two large cont..

Weather Satellites - Scientists who investigate weather phenomenon are called meteorologists. To study a particular feature, may require an observation from a larger area. By combining great number of observations and analysing them by computers it is possible to get information about a large weath..

Study of fossils is called palaenotolgy. Fossils are defined as preserved remains of a living organism that existed on earth a long time ago. Fossils are formed by the preservation of the remains of the organisms that existed in the earlier days. The dead bodies of the organisms..

Palaeontology - Study of fossils is called palaenotolgy. Fossils are defined as preserved remains of a living organism that existed on earth a long time ago. Fossils are formed by the preservation of the remains of the organisms that existed in the earlier days. The dead bodies ..