LORD OF THE RINGS


NASA images: Desktop wallpaper from outer space - TechRepublic

Saturn is perhaps the most beautiful of the planets of the Solar System. It has fascinated astronomers because of the mysterious rings. The Pioneer, Voyager and Cassini-Huygens space-probes sent back a great deal of information on the nature of the rings and the mass of Saturn itself.
       Each ring is made up of a stream of icy particles, following each other nose-to-tail around the planet. The particles an be of widely varying sizes. The rings resemble a snowstorm are mixed with snowballs up to the size of house. The ice that surrounds one of the most spectacular planets of our solar system is made off water - the same substance (with the same formula) that covers so much of the Earth's surface.
       The planet of Saturn is made of gases, mainly hydrogen and helium. Deep in the centre of these lightweight gases is a small rocky core, surrounded by a liquid layer of the gases. The hydrogen is liquid because of the high pressure in the inner regions of the planet nearest the core. The liquid hydrogen behaves with metallic properties. Study of Saturn's physical structure emphasises how substances that we know on Earth can exist in unusual physical states in different environments. 
        

Popular posts from this blog

WRITE A LETTER TO THE HEADTEACHER OF THE SCHOOL

Write a letter to a headteacher of the school in which you should : identify and evaluate the issues raised in the speech explain your views on whether the headteacher's proposal is the best way to benefit pupils at the school. Begin your letter with, 'Dear headteacher',... ANSWER :  Dear headteacher,         I accept your proposal that you have made such a big proposal towards children which seems to be very good for children and will keep the mind and body of children healthy and they will also be able to do their work and they will understand their responsibilities. And he will also learn to be free from mobile phones and video games and maintain his health, which will affect both their mind and their body in studies. And we expect from you that our children will enrol in sports in other studies too, they will be taken care of physically as well as mentally, and in school, morning circuit exercise is very good and before starting the school, An hour exercise ...
Read more

ALCOHOL AND HEALTH

Image
                                            Ethanol is the only alcohol that is safe to drink.it must only be drunk in moderation, if at all. Methanol is very toxic and in small amounts can cause blindness and death.        Ethanol mixes totally with water, which takes it everywhere in the body that water goes. The amount of alcohol that a person may drink varies with age, sex, weight and drinking history.       Heavy drinking can cause a healthy liver to become fatty and enlarged. Eventually scarring ( cirrhosis) can cause liver failure and death. Prolonged heavy drinking can eventually damage the muscle tissue of the heart. It may also lead to some long-term damage to brain. Alcohol is depressive drug and can be addictive. Drinking heavily on a particular occasion produces drunkenness, during which speech become slurred, vision is blurred and...
Read more

STEEL- MAKING

Image
                                                 The iron produced by the blast furnace is known as 'pig iron' or 'cast iron' and is not pure. It contains about 4% carbon, and other impurities. This amount of carbon makes the iron brittle. This limits the usefulness of the iron, though it can be cast (moulded) into large objects that are not likely to be subjected to deforming forces.        Most of the pig iron produced is taken to make steel. The carbon content is reduced by burning it off as carbon dioxide. Any sulphur contaminated is oxidised to sulphur dioxide. This basic oxygen process  is carried out in a tilting furnace. The method is fast: 350 tonnes of molten iron can be converted in 40 minutes. Scrap steel is added to the molten pig iron for recycling. A high-speed jet of oxygen is blown into the vessel through a water-cool...
Read more