Science Tech

 Disaster Management History shows that India is exposed to national disasters. Cyclones, floods, earthquakes, droughts and floods are major threats. About 60 percent of the landmass is prone to earthquakes of various intensities, over 40 million hectares is prone to floods and 68 percent of the area is susceptible to drought. This not … Read more Disaster Management

 Use of I.T. in various services An important application of information technology is video on demand. It is very common now a days. The cable tv operator provides services to watch any video clipping, movie or any favourite tv program. The channel is established from the computer at home and the cable operator. … Read more Use Of I.T. In Various Services

 Respiration Respiration is defined as the movement of oxygen from the outside environment to the cells within tissues, and the transport of carbon dioxide in the opposite direction. The physiological definition of respiration is differs from the biochemical definition, which refers to cellular respiration, a metabolic process by which an organism obtains energy … Read more Respiration

 Electric current Ohm’s law and Resistance   Electrical current is the flow of charged particles. The flow of charges will be constant in current electricity. Electric current flows from higher electric potential to lower electric potential. For the current to flow, it requires a circuit which is closed loop of a conducting material. … Read more Ohms And Resistance

 Technology with a Human Face Technology and the Human Race The human race has indeed gone far with technology. From the age when he still used wooden and stone tools to a powerful era of silicon and steel, he ceased to be a helpless prey to a number of predators to become a … Read more Technology With A Human Face (1)

 Rain Water Harvesting v  Water forms the lifeline of any society. Water is essential for the environment, food security and sustainable development. v  All the known civilizations have flourished with water source as the base and it is true in the present context too. v  Availability of drinking water and provision of sanitation … Read more Rain Water Harvesting

 Fertilizers All plants need certain mineral nutrients to survive. These minerals occur naturally in the soil and are taken up from the soil by the roots of the plants. Most soils usually have enough of these minerals to keep plants healthy. However, some nutrients are gradually used up by the plants, or are … Read more Fertilizars

 Tissues Tissue, in physiology, a level of organization in multicellular organisms; it consists of a group of structurally and functionally similar cells and their intercellular material. Tissues are absent from unicellular organisms. Even among the simplest multicellular species, such as sponges, tissues are lacking or are poorly differentiated. But multicellular animals and plants … Read more Tissues

 Universalizing Science and Technology literacy Scientific and technological literacy, in its broadest sense, means much more than simply being able to read, understand and write about science and technology, however important these are.  STL also includes the ability to apply scientific and technological concepts and process skills to the life, work and culture of … Read more Universalizing Science And Technology Literacy (2)

 Circulatory System v  The circulatory system can be compared to a system of interconnected, one-way roads that range from superhighways to back alleys. v  Like a network of roads, the job of the circulatory system is to allow the transport of materials from one place to another. v  As described in Figure below, … Read more Circulatory System