sowmya 
Introduction: Air pressure, also known as atmospheric pressure is the weight of the molecules pressing on the surface of the earth. It is measured in barometric units. Barometers have a chemical called mercury within them. This chemical helps to read the atmospheric pressure in a room, or in an enclosed place. It is also the … Read more
Introduction: Among all the seasons, that are most commonly grouped as winter, rainy and summer, summer season is considered to be the hottest of all. During the summers, days are longest and nights the shortest. Depending on the region and other climatic conditions, the summer temperature vary on a large scale. Some regions in the … Read more
Introduction Caves are naturally formed hollow spaces with in the forest areas considered to be a place to stay for the animals. They are formed over years of various natural processes like water erosion, pressure, atmospheric influences and micro-organisms. Caves can be of different sizes, small, big or huge. Most of the times, they are … Read more
Introduction: Rainforests are the forest that report very high frequency of rainfall annually. Rainforests are responsible for 28 percent of the world’s oxygen turnover. Rainforests are becoming thin because of deforestation which in turn results in habitat loss and atmospheric pollution. There are two types of rain forest, tropical and temperate. The common thing between … Read more
Introduction: Water that comes into our taps from the tank is usually cold because it is groundwater. During cold weather conditions, it becomes difficult to use the normal water running through the tap. That’s when hot water requirement comes into the picture. This need has been satisfied by the invention of water heaters. Water heater … Read more