horizon science high school

. These different positions of the images formed at short intervals of time give the impression that the star is twinkling. Variation in the Size of the Sun At dusk or dawn the Sun appears to be larger than at noon. This is because when the sun is near the horizon the rays of light coming..

Coal is formed in nature by the 'carbonisation' of wood. Conversion of wood to coal under the influence of high temperature, high pressure, and in the absence of air is termed carbonisatio..

Here the aim is to increase crop production. High yielding crops should be developed for this purpos..

Metals have high density and are very heavy. Iridium and osmium have the highest densities where as lithium has the lowest densit..

The installation and maintenance of an OTEC power plant is very high and efficient commercial exploitation is difficul..

Although there are more than hundred elements around us we do not find these elements in their native form in nature. This is because most of these elements are highly reactiv..

The patient develops severe headache, high fever, painful contractions of the throat muscles and ches..

This breed is a native of Kaira and Vadodara districts of Gujarat. The average yield is 1600 to 1800 litres. The fat content is about 8-12%. This breed is highly adaptabl..

Fish is a source of high quality animal protein and a rich source of minerals like calcium, phosphorus and iron. India abounds in fish, both fresh water and marin..

Headache and high temperature for three four weeks. The temperature reaches its peak in the afternoon If care is not taken, relapse is commo..