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Unlike airplanes, helicopters feature spinning wings called blades or rotors on top. As a helicopter’s blades spin, they create a force called lift that allows
That first meal of the day is more commonly known as breakfast. If you divide this compound word into two parts, you’ll see it’s made up of “break”
Kiwi can refer to a few different things. For example, it’s a fruit that’s sometimes called kiwifruit. It’s also called Chinese gooseberry. These small, egg-shaped
Most spelling bees start out with short, easy words. You might be asked to spell “bake” or “sea.” As the competition goes on, though, words get longer
Geneticists have theorized that our ancestors originally had 44 teeth each. The reason was that they consumed mostly solid foods. Subsequently, due to the fact
Kangaroos are mammals that are part of a special group known as marsupials. Marsupials are mammals that have a special pouch used for carrying their babies. In addition to
Known by the scientific name Electrophorus electricus, the electric eel is an electric fish able to generate powerful electric shocks. Electric eels use their shocking abilities for hunting and self-defense.
1.: – मांसपेशियों में किस अम्ल के एकत्रित होने से थकावट आती है ? Ans : – लैक्टिक अम्ल 2.: – अंगूर में कौन-सा अम्ल
Birds are the only dinosaurs left. That might seem strange. A pigeon or a penguin doesn’t look much like a Tyrannosaurus. But the connection is
Geography These Tokyo facts will prove Tokyo has fascinating geography as it’s made up of lots of different islands that come from Japan, these facts
During the Revolutionary War, France became a close friend of Americans seeking freedom from Great Britain. To honor its friendship with America, France gave the U.S. a
The first bridges were most likely simple logs placed over small streams. The science of engineering has come a long way since then. Now, bridges of many types are
You may be thinking, “I’ve seen a lot of grass and none of it’s blue!” You’re right. Kentucky Bluegrass is a funny name, as it
Eating in space can be a real challenge. Why? There’s not enough gravity! If you let go of a French fry, it will float off and
Books have been around for thousands of years. When ancient civilizations first started developing writing systems, they would write on just about anything, from stone to tree bark. Ancient Egyptians were the
Blood is composed of cells and plasma. The cells include red blood cells, white blood cells and platelets. The red blood cells carry oxygen from the lungs and give blood its red color. The white blood cells fight infections.
The silk is produced in silk glands with the help of the spider’s spinnerets. Spinnerets are special organs that allow the spider to decide what type of thread it needs for
Made from the grains of the oat plant, the dish we know as oatmeal is made from ground oat groats (sometimes called “milled oats”), steel-cut oats or rolled oats.
When a new invention is created, developers often invest thousands — or even millions — of dollars into the product or idea. Once the invention
Stars, like the Sun, fill the universe. The core of a star constantly converts hydrogen, its fuel supply, into helium. This process, called nuclear fusion, makes stars shine so brightly. After billions of years of
In 1821, Louis Braille, a blind Frenchman, created a system that people with visual impairments, such as blindness, could use to read and write. Although
Would you believe January was not always the first month of the year? The ancient Romans used a different calendar system, and their year began
When you go to sleep each night, your mind goes on a sort of sleep roller coaster. As you sleep, your brain passes through different
Each grain of sand consists of a tiny piece of a mineral, rock, coral, or shell. The forces of nature create sand through the erosion
The air-breathing lungs of mammals, including humans, must be dry and empty of fluids to work properly. When we take a breath, tiny air
You may be surprised to learn that chili peppers are native to the Americas and have been a part of the human diet for thousands of years. Archaeologists in
A burp is nothing more than the sound of gas escaping your body. When you drink or eat, you also swallow air. As you continue
The teddy bear is named after U.S. President Theodore “Teddy” Roosevelt. In 1902, President Roosevelt participated in a bear-hunting trip in Mississippi. While hunting, Roosevelt declared the behavior of the other
Each leaf on a tree is like a tiny solar panel, gathering sunlight the tree uses to make food. Sunlight helps turn water and carbon dioxide into oxygen and glucose,
No single person or culture invented the alphabet — it has evolved over the centuries. In order to understand the modern alphabet, we must take
In order to understand banana bruising, let’s take a peek at the banana’s ripening process. Meet ethylene. Ethylene is a hormone found in the peel
It’s true! We call these exotic things carnivorous plants. Although most carnivorous plants eat small insects, larger carnivorous plants in tropical areas have been known
Flamingos are some of the best-dressed birds in the avian world. They weren’t born that way, though! Baby flamingos are actually born with gray feathers.
This is because black absorbs heat faster and better than other colors. At the same time, it emits heat in a faster manner. So that,
Scientists have discovered that the closest human relatives, chimpanzees, cannot speak due to the fact that their analog of the speech gene, inherited from our
If you’ve ever bought a brand-new DVD, video game, or computer software package, you know you have to tear the plastic packaging to open it. Often,
If we define “largest” in terms of length, then the longest snake in the world today is the reticulated python. Although reports of large snakes
Glitter is made up of hundreds — even thousands or tens of thousands! — of tiny pieces of various materials. What types of materials? Some common glitter materials include
Bloodhounds have a very, very good sense of smell. Researchers estimate that their sense of smell is at least 1,000 times stronger than a human’s.
The explanation for red is simple: it has the longest wavelength in the spectrum of visible light, so it’s easier to see from a distance.
The notion that humans only use a small percentage of their brains is a common myth. In reality, the brain is a highly active organ,
What water does do is affect the way light bounces off of your hair. Objects have the color we see because they reflect certain wavelengths
When honey bees sting, they release pheromones that stir up nearby bees. Often, those other bees join the attack. One stinging bee can turn into hundreds or
Why Swiss cheese has holes was a mystery for many years. Then, in 1912, a U.S. Department of Agriculture chemist named William Mansfield Clark published a manuscript in which he set
Memories are mental records of past events. As such, they consist of recollections of our personal experiences. Memory begins with the senses since that’s how
Science doesn’t yet have a final answer for why moths, flies, and other insects. There are several theories that might explain why certain insects seem
Getting sleepy and eventually falling asleep after reading a few pages is a phenomenon that many, if not most, of us can relate to. So what is it about
Before we get to how erasers work, though, let’s learn a bit about what exactly is on the paper that you’re erasing. Although we call
Thousands, millions, and maybe even billions of years ago, extreme heat and pressure turned pure carbon into colorless diamond crystals 100 miles or more below
That’s right! Your brain is an incredible tool that can hold more information and do more things than any piece of modern technology in the world today.
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