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.
358 items in this section. Displaying page 15 of 36
Why do we Blink?
How many times do you blink in a minute? Weird, who knows! Well, mostly people blink around 15 times a minute (Reader’s Digest – Why in the World). Blinking is an involuntary action that protects the eye. Most of our eye is enclosed in a bony socket covered with a layer of fat, which forms a protective cover. But when the eyes are open, one-tenth of the total surface area is exposed to the atmosphere. This means the eye, the most delicate and sensitive part of the body, has to withstand the dust present in the air....
What to do During an Earthquake?
An earthquake is literally an earth shattering experience! Here you are enjoying an afternoon snooze, or having a cup of coffee in the morning or even sleeping under a quilt on a cold winter night when WHAM! The entire crockery shelf collapses shattering plates and cups; the painting on the wall nearly knocks you down as it falls; or the antique fan looks like it will brain you as it hangs down, held by a single wire!...
Why Do Turtles and Tortoises Live So Long?
Turtles and tortoises have been on planet Earth even before the dinosaurs. They are that old. The difference between a turtle and tortoise is that the turtle stays in water while the tortoise stays on land. But both creatures have one thing in common: they live to a ripe old age, from 120 years to almost 200 years! Some of them are huge, like the giant tortoises of the Galapagos Islands – they weigh beyond 200 kg; their shells are more than a metre long....
How do Animals Communicate?
Humans have invented new and advanced ways of communicating with each other. Television, radio, telephones and of course email. You will be surprised to know that animals who seem to have very simple methods of communication – using their bodies and voices – are also capable of long distance communication. How do Animals Communicate? [Illustration by Shinod AP] Foot stomping and low frequency rumbling created by elephants can travel upto 20 miles and is used by elephants to signal other herds or members, says an article in the Hindu newspaper....
Planets! Planets! and more Planets!
Astronomers working at Berkeley and Geneva have found nine new planets circling nearby stars. With this discovery, we now know of 50 extra-solar planets, also called exoplanets. That is a big increase from 41 planets last known five years ago. All these individual planets move in an orbit around a star, which is called their parent star. The astronomers estimate that the Beta Pictoris star has a planet ten times the mass of Earth. It orbits at a distance of about 10....
Is Bamboo a Grass!
If you look at a blade of grass and a bamboo tree they remind you of a mouse and an elephant. But unlike those animals, the grass and the bamboo belong to the same family. They are brothers! The bamboo is the largest member of the grass family. It grows in Asia, South America and Africa. It has about 500 different varieties. They all have smooth, hollow jointed stems with a strong watertight partition at each joint....
The Plastic Menace
Heavy rains lashed Mumbai city a few months ago, the worst rains in decades. The downpour literally brought the city to a standstill. And all because of discarded plastic bags. Plastic bags or polythene bags are essentially made of petro-chemicals. These bags are very thin and in a strong wind can fly away from garbage bins and land on drains and rain-water channels. The bags then clog the drains as they do not let water to flow through....
Do Whales and Dolphins see Blue?
Dolphins and whales live in the deep blue sea, but strangely these animals are not able to see the colour blue! Leo Peichl of the Max Planck Institute for Brain Research in Frankfurt and his colleagues discovered during routine tests that seals do not respond to the blue colour. Intrigued, they carried out similar tests on few other species, such as dolphins and whales, and found the same results. According to fossil evidence, whales are believed to have descended from a four-legged primitive ungulate (hoofed mammal) which lived on land and was similar to the modern day hippopotamus....
Who Invented Band-aid?
What happens when you have a small wound? Just apply a small piece of sticky plaster with gauze (a loosely-woven cotton surgical dressing), or band-aid on it for a few days, and ta-da, your wound is healed! What a stupendous item this band-aid is! So ideal for accident prone people, whether adults or kids. Well it was exactly for this reason that Earle Dickson invented it. He did it for his wife, who though not into rough contact sports was nevertheless accident prone....
Roach Sense
Have you ever caught a glimpse of a cockroach scurrying across your kitchen floor? Well, by the time you manage to get your hands on a roach repellent, the cockroach would have disappeared. Not surprising really, considering you are dealing with one of the greatest escape artists in the insect kingdom. Yes, cockroaches or roaches for short, are adept at wriggling out of tight spots. Whether it is a frog lurking behind a bush, or a descending broom, these creatures have an uncanny ability to scent danger....