Science magazine for children: Packed with science stories, science facts, science features, and other science learning resources for children. Discover the known, the unknown, and little-known facts in our science articles. Learn the how and why of everyday things and explore rare and exotic living species.
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What is Pluto – a Star or a Comet?
Which is the planet farthest from the sun? Pluto, of course. But, some recent findings suggest that Pluto is not a planet at all. It seems Pluto could actually be a comet, reports the National Geographic website – www.nationalgeographic.com Basically, it is Pluto’s small size that has got it into trouble. It has a diameter of approximately 1,420 miles or 2,280 kilometers. This makes it six times smaller than Earth. This fact irked scientists who always suspected that something so small could never belong to the hallowed club of planets....
Global Warming: Melting kingdom of the Polar Bear
Through the long and dark Arctic winter, the mother Polar Bear sat quietly in her den. She had given birth to her cubs, and was waiting for them to grow strong enough to follow her out to the ice pack. The ice pack is her refrigerator, the place where she gets her food. It’s quite literally a floating, rotating gyre or “cap” of ice that covers the Earth’s northern pole. Along its edges of cracked and broken ice swims the Polar Bear’s food: ringed seals, bearded seals, harp and hooded seals and, occasionally, carcasses of beached beluga whales, walruses, narwhals, and bowhead whales....
How Far Away are the Stars?
The sun is a star, just like the thousands of others we see in the sky each night. But it looks so very big. Is it the biggest star? No. The only reason the sun appears so big is because it is closer to us than any other star. The sun is just 93,000,000 miles (or 14,88,000,000 km) away from the earth. That seems an awful lot of distance, but light can travel so quickly that the sun’s rays reach the earth in a little more than eight minutes!...
Why is the Bridge of Sighs so Called?
The Bridge of Sighs (Ponte de Sospiri), is in Venice, Italy, and connects the inquisitor’s room in the east side of the Doge’s palace with the state’s prison or prigioni over the Rio de Palazzo. Work on the Doge’s palace (residence of the Duke) or Palazzo Ducale was begun in the 14th century and got its present shape only by the 16th century. The palace was not only the Doge’s residence and thus contained the inquisitor’s (judge) office, it also housed many other institutions like lawyers offices, the Chancellery, Naval Offices, etc....
Why Do we Get Tired?
Sumit was a tireless bundle of energy. He was always up to some mischief or the other. As he grew, to his mother’s relief he became a more relaxed child, and over the years his energy level seems to have come down considerably. However, now he feels tired and fatigued. At times he wonders why he gets so tired so soon when there is so much that he wants to do? What is it in our body that causes fatigue?...
Is Tomato a Vegetable or a Fruit?
We think the tomato is a vegetable, but it is actually a fruit. Because it is not sweet and is used for providing flavour to food, we think of it as a vegetable. The tomato is originally from Mexico. The word “tomato” comes from the Spanish tomate, which in turn comes from the Nahuatl word tomatotl. Spanish explorers who went to South America about 500 years ago, brought back the tomato to Europe. The French called them love apples, while the British called them apples of gold....
How does the Lotus Flower Clean itself?
How will you explain the meaning of purity to someone? Well, many people do it by giving the example of the lotus — it grows in muddy waters but the flower remains spotless. It is not surprising that the lotus has a special or sacred place in world religions like Hinduism and Buddhism. It is a symbol of purity, and many a time gods are shown seated on lotus thrones. Now a group of German Scientists has discovered that the lotus plant is truly spotless....
How do Nails Grow?
Put your hands face down and look at the fingernails on your hand. Are they long or short? Dirty? Covered with polish? And the nails on your toes? Are they tearing up your socks? When my nails do that to my socks I know that it is time to get hold of a nail trimmer to cut them down to size. Meanwhile, my sister wants to show hers off. So she spends hours every day polishing her nails endlessly....
What Kind of Horses did Knights Ride?
In 1066 AD the Normans (people who came from Normandy in Europe) conquered England and introduced feudalism in England. Feudalism was a system of contract where society was divided into four classes: royalty, barons (noblemen) and bishops, knights (a title or a rank) and lastly peasants. Merchants and artisans were placed just above the peasants. From 1066 to about the 14th century, feudalism developed across Europe. There were no professional armies at that time like we have today....
How Does Dew Form?
Remember walking to the school or the bus stop on a cold wintry morning? You can see the beautiful crystal drops of dew, and if you happen to be on the grass, they could well be soaking your shoes. Ever wondered why there is no dew in the summer or rainy seasons? Well, special as it looks, dew needs special conditions to form as well. When a warm and clear day is followed by a cool evening and night, which is clear (cloudless), dew is formed....