What is a Light Year? a light year is the unit which is used to measure the distance between astronomical objects. It is the distance traveled by a ray of light in one year, and since light travels at a speed of 300,000 km (186,000 miles) per second, this amounts to nearly ten million million kilometers ( six million million miles)! Even so, the nearest star to the Sun...
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September 11, 2017 evirtualguru_ajaygour10th Class, 9th Class, Class 11, Class 12, General KnowledgeNo Comment
What is a Galaxy? A galaxy is a huge system of stars, gas and dust which is held together by its own gravity. Our Sun is a small star among an estimated 100,000 million others which make there are thousands of millions of galaxies in the Universe, of all different shapes and sizes, separated by vast regions of space. The Andromeda galaxy is the nearest galaxy to our own and it...
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September 11, 2017 evirtualguru_ajaygour10th Class, 9th Class, Class 11, Class 12, General Knowledge1 Comment
What makes up the Universe? The Universe is made up of thousands of millions of galaxies, large clouds of dust and gas called nebulae, and the space between them. No one knows the size of the Universe, although it has been estimated to have a radius of 10,000 million light years. This may not be correct, as it could continue infinitely in all directions. We do know, however, that the galaxies...
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September 11, 2017 evirtualguru_ajaygour10th Class, 9th Class, Biology 11, Biology 12, Class 11, Class 12, General KnowledgeNo Comment
How does a chameleon catch its food? The chameleon (above) is a strange – looking reptile which is able to change its colour to suit its surroundings. It cannot change colour completely, of course, but it can blend in with its background remarkably well. This enables it to approach its food quite closely without being seen. Another interesting feature of chameleons is the way in which their eyes can move independently...
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September 11, 2017 evirtualguru_ajaygour10th Class, 9th Class, Biology 11, Biology 12, Class 11, Class 12No Comment
How can a snake eat a pig? Unlike many other animals, snake cannot chew their food before they swallow it, and so anything they eat must be swallowed whole. But how does a snake manage to eat some- thing as big as, say, a pig? Surely it’s mouth is much too small? Although a snake does have a small mouth, its jaws are not connected together like those of many...
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September 11, 2017 evirtualguru_ajaygour10th Class, 9th Class, Class 11, Class 12, General KnowledgeNo Comment
Are all snakes poisonous? Many snakes are poisonous- venomous is a better word and if you come across snake , it is better to leave it well alone, just in case ! Snakes such as vipers, cobras and rattlesnakes are very venomous and they use their venom to , kill their prey. The rattlesnake (left) waits until it is close to its prey – perhaps a rat – and then...
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September 11, 2017 evirtualguru_ajaygour10th Class, 9th Class, Class 11, Class 12, General KnowledgeNo Comment
What is a cold- blooded animal? Snakes and lizards usually live in hot countries, the reason that reptiles like warm places is because they cold – blooded. This does not really mean that their blood is completely cold, but that they cannot keep themselves warm like birds and mammals can. Reptiles bodies can only be as warm as their surroundings if it is warm, they become active, but if it is...
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September 11, 2017 evirtualguru_ajaygour10th Class, 9th Class, Class 11, Class 12, General KnowledgeNo Comment
Who were the samurai of Japan? The samurai were fearless warriors who made up a class of people in Japan. They wore two swords and an elaborate head-dress. The samurai lived by a set of rules known as bushido, which commanded them to act with loyalty and courage. If a samurai considered that he had lost honour, he killed himself. The samurai were originally the guards of the emperor of Japan....
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September 10, 2017 evirtualguru_ajaygour10th Class, 9th Class, Class 12, General KnowledgeNo Comment
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