Ask Science and Arts Magazine for Kids and Children

Ask Science and Arts Magazine for Kids and Children April 2019

Each themed issue of ASK invites newly independent readers to explore the world of science and ideas with topics that really appeal to kids: What makes wind? Where do colors come from? Were pirates real? Filled with lively, well-written articles, vivid graphics, activities, cartoons, and plenty of humor, ASK is science kids demand to read! Grades 3-5

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United States
Cricket Media, Inc.
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21,14 €(IVA inc.)
9 Números

en este número

2 min.
nosy news

Planet Hunter 2 The Kepler telescope has spent ten years in space, looking for planets around other suns. But now it’s time for it to retire. Kepler launched in 2009. It circled the sun and took pictures of other stars. It snapped the same stars over and over. Then scientists compared the pictures to find stars that got a little dimmer on a regular schedule. That happens when a planet passes in front of its star—like a person walking around and around a lamp. Kepler’s pictures have uncovered more than 2,600 planets. Scientists now think there are even more planets than stars. But the hard-working spacecraft finally ran out of fuel. Kepler will keep drifting around the sun, but its search for planets is over. In 2019 a new telescope called TESS…

2 min.
born to run

If a cheetah and a horse ran a 100-meter dash, who would win? Probably the cheetah—as the fastest land animal, it can run 70 miles (112 km) an hour. Even the fastest racehorses reach speeds of only about 45 mph. But what if they raced a mile? That would be a different story. The cheetah would get tired and quit half way. But a horse could keep running for miles without tiring. It’s built for both speed and endurance. Standing Naps Can you sleep standing up? A horse can! Its legs can lock into a standing position when it naps. That way, it’s always ready to run. Long-Distance Legs The horse’s long legs let it cover lots of ground with each step. The leg bones are the same as in a human leg, but stretched…

2 min.
too fast to see

For centuries, artists drew running horses as if they were flying through the air, legs stretched out and all four feet off the ground. But for a long time, no one knew if horses really ran like that. A horse simply runs too quickly. It was impossible to see clearly how its legs moved—until photographer Eadweard Muybridge took up the challenge. In 1872, a wealthy horse trainer hired Muybridge to help him prove that a galloping horse sometimes has all four feet off the ground at once. Most cameras of the time could not take pictures of moving objects. To capture an image, their shutters had to stay open for at least 15 seconds. If the subject moved in that time, the picture was blurry. On school picture day, you might…

4 min.
how we made friends with horses

If you are a bike rider, you may remember your first long ride. On a bike, you could travel so much faster and farther than you ever could on foot. Off you went to your friend’s house, to school, or to the park. What freedom! The first humans to ride horses probably felt the same way. Wild Herds Who was the first to throw a leg over the bare back of a horse? Scientists aren’t sure. But they do know that horses once ran wild through the open grasslands of Europe, Asia, and the Americas. Prehistoric people first viewed horses as a source of food. Long before humans learned to farm, they were hunters. For food, they searched for fruits and nuts, and stalked bison, mammoths—and horses. Then, about 10,000 years ago, horses disappeared from…

1 min.
becoming the horse

The horse as we know it has evolved over millions of years. Ancient horses were very different. But as their environment changed, their toes and teeth adapted. That helped them survive. You might not recognize the fox-sized creature known as Sifrhippus as the horse’s earliest ancestor. This small horse lived 55 million years ago. Its feet were like paws, with four toes on the front feet and three on the back. The toes were awkward for running, but good for stepping through the marshy forests. Sifrhippus was a browser—it nibbled berries and leaves with its tiny teeth. Mesohippus, or “middle horse,” developed about 35 million years ago. It was still a browser, like Sifrhippus, but it was larger—the size of a sheep. It had just three toes, a big middle toe and…

3 min.
a visit from the farrier

When Mikey the horse needs new shoes, he doesn’t go to the shoe store. His owner, Alyssa, calls Natasha. Natasha is a farrier. Her job is taking care of horses’ hooves. Natasha brings all her tools with her to Alyssa’s farm. The first thing she does is check how long Mikey’s hooves are. Horse hooves grow, just like fingernails. In fact, they are made of the same stuff as fingernails. It’s called keratin. Wild horses walk and run about 30 miles a day, and that wears their hooves down naturally. But horses who live on farms, like Mikey, don’t run around as much. So Natasha has to trim his hooves to keep them healthy. Trimming doesn’t hurt, just as it doesn’t hurt when you trim your fingernails. But hooves that grow too long…