DÉCOUVRIRBIBLIOTHÈQUE
Jeunesse
Ask Science and Arts Magazine for Kids and Children

Ask Science and Arts Magazine for Kids and Children May/June 2018

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

Pays:
United States
Langue:
English
Éditeur:
Cricket Media, Inc.
Fréquence:
Monthly
Lire plus
J'ACHÈTE CE NUMÉRO
3,62 €(TVA Incluse)
JE M'ABONNE
22,68 €(TVA Incluse)
9 Numéros

dans ce numéro

2 min.
nosy news

MONKEYS ALWAYS BRUSH Do you floss your teeth after a meal? These monkeys do. Nicobar long-tailed macaques are medium-sized monkeys that live on islands in the Indian Ocean. Scientists have spotted these monkeys using lots of tools. When the macaques want to eat a fuzzy or thorny plant, they sometimes use a leaf or a twig to rub the food smooth. Or they might use a piece of trash such as paper or cloth. They use these tools to clean mud off their food too. The researchers also saw the macaques flossing after eating. The animals used grass, feathers, threads, or bits of wire to remove food stuck between their teeth. Other kinds of macaques use tools in similar ways. Those monkeys deserve a sticker from the dentist! New Dino Was an odd Duck In…

4 min.
great moments in metal

Long, Long Ago Shiny Rocks No one knows who picked up the first nugget of gold or copper from a river. But it was long, long ago. People learned to hammer the shiny lumps into jewelry and tools. They found metal to be strong, waterproof, and beautiful. And if a metal object broke, they could re-shape the metal into something else. 5000 BCE Melting Rocks Eventually, someone (maybe a potter baking clay pots) noticed that certain green rocks oozed shiny metal when they got very hot. That metal was copper. Soon, people were collecting rocks and melting them to get more metal. They had invented smelting. 4000 BCE Mixing Metals Mixing copper with tin made a new metal: bronze. Bronze was shaped by pouring the molten metal into sand or clay molds. This Chinese bowl…

3 min.
stardust

Where do metals come from? They were all made by stars! We dig metals out of the earth. But how did the metal get in there? The story of Earth’s many metals starts way back at the very beginning of the universe, nearly 14 billion years ago. The universe began with a huge explosion called the Big Bang. At first, there was just hydrogen and helium gas. Gradually, big clouds of gas formed. Some got so huge that they lit up—and became stars. Star Factories Inside stars, the gravity is intense. The centers get so hot that atoms sometimes smash into each other at colossal speeds. They mush together to make whole new atoms. This is called fusion. When atoms fuse, they also release a lot of heat and light, making stars shine. In the…

1 min.
what is metal?

Metals are a group of materials that are alike in some ways. Metals are: • Hard and shiny. • Maleable, meaning they can be shaped into objects. • Ductile, meaning they can be pulled out into wire. • Metals carry heat and electricity well. Many metals are also elements, the basic building blocks of all matter. A pure element has only one kind of atom in it. Pure gold has only gold atoms. Pure tin has only tin atoms. Pure metals can blend to make many different alloys: copper + tin = bronze copper + zinc = brass silver + gold = electrum tin + copper + antimony + lead = pewter Metals combine with other elements to make minerals, or rocks. Ore is rock with a lot of one kind of metal in it.…

1 min.
surprise! it’s metal

Blood is full of iron. Red blood cells use iron to carry oxygen around your body. Earth’s core is a big hunk of iron and nickel. Seawater is full of dissolved metals—even gold. Ocean algae need iron to make energy from sunlight. Food gives you small amounts of many metals that your body needs. Paint is often colored with metal powder. Metals also make it not see-through. Colored glass is made by adding powdered metals to molten glass. Ancient Egyptians first learned this trick. Birds’ eyes contain tiny bits of metal that may act like a built-in compass.…

1 min.
eat your iron

What You’ll Need: • Breakfast cereal—look for a kind with lots of iron (like Total or Formula 19).• Plastic bag or blender• Plastic bucket or mixing bowl• Strong magnet• Water• Wooden or plastic spoon• Piece of white paper What to Do: 1. Crush the cereal into powder in a blender or by pounding it inside a tightly sealed plastic bag. Get it as powdery as you can. 2. Pour the crushed cereal into a plastic bucket or bowl. Add plenty of water. Drop in the magnet and stir it up. (If you like, tie a string around your magnet to pull it out with.) 3. Let the mixture sit until the cereal gets soggy and settles to the bottom. 4. Carefully take out the magnet. Hold it by the middle, not the ends. 5. Look for the…