conclusion on air

Presence of dangerous unnatural ingredeints causing imbalance in the ecosystems and health hazards to human beings and animals is called pollution. Pollution is mainly found in air, water, soil, food and sound. Major human activities like industries, agriculture, health care, tran..

Conclusion - Presence of dangerous unnatural ingredeints causing imbalance in the ecosystems and health hazards to human beings and animals is called pollution. Pollution is mainly found in air, water, soil, food and sound. Major human activities like industries, agriculture, he..

Air - Essential for Burning - We know that without air, we cannot burn anything. In the laboratory, if the flame of a spirit lamp is to be put out, we just place the lid of the spirit lamp on it (Fig.5.1..

The word force in common usage refers to a push or pull. The word Mass is also just as familiar as the word force. A super tanker is one that contains an enormous amount of mass. In comparison a coin does not contain much mass. During the seventeenth century Newton developed three important laws th..

Take a look at your surroundings. You may find a pencil, a book, an apple, a table or a chair. Can you feel the air blowing? These are different forms of matter. One or more of our senses can recognize these. These objects possess mass, occupy space and have different shapes, sizes and c..

In 1896, the phenomenon of radioactivity was accidentally discovered by French scientist Henri Becquerel. He was performing experiments with uranium compounds. He accidentally placed a crystal of potassium uranyl sulphate over photographic plate wrapped with usual black paper. On developing the p..