Who, what, where, when, why & how? Our online science magazine for kids tries to answer all your questions on science, environment, earth, geography, health, living beings, exploration and discoveries. You will find features on shooting stars, ocean depths, dinosaurs, satellites, ham radios, hiccups, and much more. Enter this fascinating kids science zone and find the answers to all your questions about the world around you.
210 items in this section. Displaying page 16 of 21
What is Memory?
As a child my day began with a LARGE glass of milk and five almonds with their skin pealed, that my mother used to put in a bowl of water the previous night. While the milk was for health and energy, the almonds were for increasing the memory. I don’t know how much they helped, but I still offer them to my children in the hope that they do. After all, memory is a precious thing....
What does SOS mean?
Recently, sailors on the nuclear submarine that sank in the Baltic Sea were isolated from rescue workers as their radio set got damaged. Luckily their radio operators knew the Morse code and were able to communicate by knocking on the sides of the ship. There are many explanations for what the words stand for: Save Our Souls; Save Our Ship; Send Our Succour… The meaning of all three is the same – it is a plea for help by someone in distress....
How Can We Correct Crooked Teeth?
Smile! A smile actually brightens up your entire face and is the most striking part of your face. But sometimes you are ashamed to smile. Why? Because you have buckteeth? Your teeth are crooked, stained? Have you seen some kids with a mouthful of metal? These are called braces. Today, doctors can work wonders with your teeth. They can straighten your teeth and put a sparkle on it. All this without dentures, mind you! Just as you go to a doctor with an upset stomach or an eye doctor to test your eyes, your teeth also requires attention and care....
What is Geothermal Energy?
In winter, all of us warm water in the geysers in the bathroom for bathing. Nature too has geysers which throw up a huge amount of hot water and steam. The ‘Old Faithful’, as one of the geysers in the Yellow Stone National Park in the United States of America is called, spews out boiling water at intervals of 33 to 120 minutes. Old Faithful, as one of the geysers in the Yellow Stone National Park in the USA is called, spews out boiling water at intervals of 33 to 120 minutes Why do natural geysers spew hot water?...
How can We Use Water to run Cars?
Huge amounts of polluting gases are being released into the earth’s atmosphere by the large scale burning of fossil fuels or natural fuels found under the earth. These gases are the main culprits behind the phenomenon of global warming and other climatic changes. In order to find cleaner fuels, scientists around the world are trying to find a fuel or source of energy which produces little or no pollution on being burnt. Quite amazingly, a new technology points out that water can be used to generate electricity....
Why do Woollens Get Holes?
Most people think moths are responsible for eating up our woollen clothes, furs and rugs and making holes in them. This is because when we open these boxes in spring, a number of moths fly out. Don’t you believe it! Moths do not eat wool. It is the larvae (caterpillar) of certain moths that cause holes in our woollens. Caterpillars feed on wool, furs and other fabrics and damage them. But where do these caterpillars come from?...
What are Volcanic Tubeworms?
In order to raise chicks the farmer keeps the eggs warm and is careful not to crush them. But when scientists in the University of Southern California rear tubeworms, they keep the immature worms very cold and under high pressure. You would think the scientists are being cruel by subjecting these little worms to such extreme conditions. They are not. The worms can thrive only under these circumstances, because they live in the deep sea where it is very cold....
Who stole the Candle Wax?
On every Diwali, known as the festival of lights, our family has a big discussion on the kind of lighting we should have. And after talking about candles or electric bulbs we invariably choose the _diya_s or earthen lamps for their beautiful flames. But last year, we reached the kumhara or potter’s roadside shop a bit too late. The lamps had been sold out and the potter had a big smile on his face. So we decided to light candles....
What are Dry Clouds?
It is that time of the year when all of us look to the sky, waiting for the first drops of rain to fall on our faces. We wish the monsoon would come soon. But for people who live in polluted cities like Delhi or Tokyo, there’s some bad news. Israeli scientists have discovered that air pollution may actually stop rain from falling. To know how pollution may prevent rain from falling, it is necessary to know how and when rain falls....
What is an Orca?
If you have seen the movie Free Willy, you would be able to instantly recognise an Orca. Willy is an Orca or a killer whale. Orcas (Orcinus orca) are mammals classified under the order Cetacea. Though they are called killer whales, they belong to the dolphin family. Like other whales and dolphins, they, too, come up to the surface to take in oxygen. Orcas can be found in all the oceans of the world. Orcas are found in pods which is the collective term for these animals like ‘a gaggle” for geese or ‘school’ for fish....