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Some fundamental related to heat and temperature: 1) According to kinetic theory, matter is made up of molecules which are in state of continuous motion. 2)In solids the molecules are closely packed and they exert a strong force of attraction on each other. 3)In liquids the intermolecular force is week while in gases it is negligible. 4)Because of random motion, the molecules posses kinetic energy. The sum of all energies present is called thermal energy of the object. 5)Heat is form of this thermal energy transferred between two or more system or between a system and surrounding by the virtue of temperature difference. 6)Temperature is used to measure heat. 7)Heat transfer takes place by three ways- conduction (solids), conservation (liquids or gases) and radiation. 8)Heat is measured in terms of joule (SI) and calories (CGS)  9)Temperature is measured in degree Celsius are the two used to measure temperature.

Effects of water pollution 1)Pathogenic and non pathogenic organisms are present in polluted drinking water. 2)Water born disaster such as cholera, typhoid, diarrhea, dysentery, hepatitis, polio, and  jaundice can be caused due to pathogens. 3)Water pollution affect on aquatic life. a) Oil pollution affect algae. b) Reduction in dissolved oxygen can kill fishes. c) Pesticides affect reproduction and growth of fishes. d) Detergents cause harm to the respiratory system of fishes. Effects of soil pollution  1) Soil erosion retarded growth of plants/crops. 2)Nutrition deficiency. 3) Loss of fertility and productivity of soil. 4) Sewage sludge containing harmful bacteria can cause infections and diseases. 5) Radio active soil pollutants can enter into crops, animals and humans through the food chain.

Ecosystem                       The abiotic and abiotic factors and their interaction from an ecosystem. Producers like plants are important Herbivorous, Predators like lion and tiger also equally important and also the termites, insects present in dung that are decomposers are also the termites, insects present in dung that are decomposers are also important for our existence.

 Disaster                                       Do you know: Disaster INFORMATION: Some basics points                                Variously dangerous events occur many times in the environment. Those are called as Disaster. Some of the main natural disasters are floods, wet and dry famine, cyclone, earthquakes, volcanoes, etc. These are 'all of a sudden' troubles to the mankind. such events cause sudden changes in the environment and thereby cause the damage to it. Environment is also damaged due to use of natural resources for our development. This leads to sudden disaster. Un expected to human. This can called man made disaster.                                        United nations has defined the disa...

  Gravitational Force what is High and low tides   The phenomenon of a gravitation was discovered by Sir Issac Newton. As the story goes, he discovered the force by seeing an apple fall from a tree on the ground. He wondered why all apples fall vertically downward and not an angle to the vertical. Why do they not fly in a horizontal direction? Gravitational waves  After much thought, he came to the conclusion that the earth must be attracting the apple towards itself and this attractive force must be directed towards the center of the earth. The direction from the apple on the tree to the center if the earth is vertical direction at the position of the apple and thus, the apple falls vertically downwards. what is weightlessness in space On the up side shows an apple tree on the earth. The force on an apple on the tree is towards the center of the earth i.e. along the perpendicular from the position of the apple to the surface of the earth. The figure also shows the gravit...

Points of chemical reaction {Unheard}                                                            Do You Know: Chemical Reaction INFORMATION:- Points:- 1.One or more chemical reactions takes place during every chemical change. 2.Some chemical reactions occur at fast speed whereas some occur at slow speed.  3.Strong acid and strong base react instantaneously. 4.In our body, enzyme increase the rate of physiological reactions.  5.Perishable Foodstuff gets preserved longer in a refrigerator. The rate of decomposition of foodstuff gets lowered due to low temperature, and its freshness is maintained.  6.Vegitable cook quickly on oil rather than no water. 7.The chemical reactions are profitable in the chemical factories if their state is fast. 8.The rate of chemical reaction is important from environmental point of view as well. 9....

  Newlands' Law Of Octaves (Do, Re, Mi, Fa, So, La, Ti)  Law of Octaves                           Do You Know: Do, Re, Mi, Fa, So, La, Ti.  INFORMATION:-                            The English scientist John Newlands correlated the atomic masses of elements to their properties in a different way. In the year 1866 Newlands arranged the elements known at that time in an increasing order of their atomic masses. It started with the lightest element hydrogen and ended up with Thorium. He found That every eight element had properties similar to those of the first.                           For example, Sodium is the eighth element from lithium and both have similar properties also, Magnesium shows similarity with fluorine. Newlands compared this similarity with the octaves in ...

 The Weightlessness In Space  Gravitational waves     DO YOU KNOW: THE WEIGHTLESSNESS IN SPACE What is the value of g What is Gravitational Force INFORMATION:                           Space travellers  as well as objects in the spacecraft pppear to be floating. Why does this happen? though the spacecraft is a height from the surface of the earth, the value of 'g' there is zero(0).                             In the space station the value of 'g' is  only 11% less than it's value on the surface of the Earth. Thus, the height of a spacecraft is not the reason for their weightlessness. their weightlessness is caused by their being in the state of free fall.                            Though the spacecraft is not falling on the earth because of...

The Value Of 'g' what is weightlessness in space                                               DO YOU KNOW: THE VALUE OF 'g' INFORMATION:-   What is Gravitational Force                         The value of g is the same for all object at a given place on the earth. thus, any two objects, irrespective of their masses or any other properties, when dropped from the same height and falling freely will reach the earth at same time. Galileo is said to have performed an experiment around 1590 in the Italian of Pisa. He dropped two spheres of different masses from the learning tower of Pisa to demonstrate that both spheres reached the ground at the same time. what is High and low tides   Gravitational waves                          when we drop a ...

  The Gravitational waves   what is High and low tides             Do You Know: THE GRAVITATIONAL WAVES INFORMATION:-                                              Waves are created on the surface of water when we drop a stone into it. Similarly you must have seen the waves generated on a string when both its end are held in hand and it is shaken. Light  is also type of wave called the ELECTROMAGNETIC WAVE. Gamma rays, X-rays, ultraviolet rays, infrared rays, microwaves and radioactive waves are all different types of ELECTROMAGNETIC WAVES. Astronomical objects emit these waves and we receive them using our instruments. What is the value of g What is Gravitational Force                     Gravitational waves are a very different types of waves. They have been called the waves on ...

Low And High Tides   What is the value of g Gravitational waves  What is Gravitational Force                                 Do You Know: Low And High Tides INFORMATION:-  what is weightlessness in space                             You must be knowing about the high and low tides that occur regularly in the sea. The level of sea water at any given location along sea shore increases and decreases twice a day at regular intervals. high and low tides occur at different types of water in the sea changes because of the gravitational force exerted by the moon.                              Water directly under the moon gets pulled towards the moon and the level of water there goes up causing high and low tide at that place. At two places on the earth at nine...

  An Ellipse               Do You Know: An ellipse INFORMATION:  what is High and low tides   What is the value of g Gravitational waves  what is weightlessness in space                             An Ellipse is the curve obtained when a cone is cut by an inclined plane. it has two focal points. The sum of the distances to the two focal points from every point on the curve is constant. F1 and F2 are two focal points of the eliipse shown in upper figure A,B and C are three points on the ellipse then, What is Gravitational Force                                     AF1+AF2=BF1+BF2=CF1+CF2 Other posts: What is Newlands' law of octaves Unheard Points of chemical reaction  Disaster Information Disaster Management Disaster Management Authority Ecosystem Effect of water poll...