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The new school year is about to start and we've been thinking about you and how to improve the Nonfiction Minute. While we are going to repeat the publication of the Minutes we produced last year, there will be some differences which we hope you will find helpful
9/8 How to Interview a Historic Building by Andrea Warren
9/9 What Is a Light Year? by David M. Schwartz
9/10 Pee-ew! Something Is Rotten in Rome by Sarah Albee
9/11 September 11, 2001 a poem by Vicki Cobb
Please comment and make suggestions as to how else we can make it easier for you to work with our posts.
We hope that you and your students will enjoy every Minute.
Editor of the Nonfiction Minute
President, iNK Think Tank, Inc.
David M. Schwartz
the amazing, engaging, math exponent
A light year is not a year that has gone on a diet. It is not a year that’s been trimmed to 300 days. It’s not a year spent under high-wattage lamps. A light year isn’t any kind of year.
A light year is a distance. It is a vast distance, the distance light travels in a year. To appreciate a light year, you have to understand how fast light travels.
The speed of light is truly mind-boggling: 186,000 miles per . . . second. That’s “per second,” not “per hour.” In one tick-tock second, light travels a distance of 186,000 miles. If it could go in circles, it could travel around the earth more than seven times in just one second! But light travels in straight lines, not in circles. Imagine something traveling that fast in a straight line—not for a second, not for a minute, not for an hour, not for a day, but for an entire year. The distance it goes in that year is called a light year.
A light year is a convenient unit of measure when distances are enormous. You could talk about the same distances in miles. It's about 5,878,499,810,000 (5 trillion, 878 billion, 499 million, 810 thousand ) of them. But these measurements are so large that they are unwieldy. It's much easier to just name that enormous distance with two simple words: a "light year."
The star closest to our solar system is Proxima Centauri. Some of the light that leaves Proxima Centauri goes to Earth, cruising along at 186,000 miles per second. At that speed, light takes about 4.2 years to get to Earth from Proxima Centauri. So how far away is Proxima Centauri? It is 4.2 light years away.
To give you an idea of how far that is, imagine going to Proxima Centauri in a spaceship traveling at the speed of the space shuttle — about ten miles per second. (That’s much faster than airplanes can fly.) You would get there in about 70,000 years.
Our Sun is much closer than Proxima Centuri. It is 93 million miles away. There is another way to refer to the distance from the earth to the Sun. Light leaving the Sun takes about eight minutes to get to Earth, so we say the Sun is eight “light minutes” away. If you traveled at the speed of light, you could get there in eight minutes. Have a nice trip!
David Schwartz has been fascinated by big numbers and big distances ever since he was a little boy riding his bicycle, wondering “How long would it take for me to ride to Proxima Centauri, 4.2 light years away?” He wrote about light years in his math alphabet book G Is for Googol.
David is a member of iNK's Authors on Call and is available for classroom programs through Field Trip Zoom, a terrific technology that requires only a computer, wifi, and a webcam. Click here to find out more.
So do I stick my head into that glass-enclosed rectangular box? Will it fry my brain? Or will the damage show up in 20 years? Will my head come out looking like those primitive shrunken heads that repelled and fascinated me as a child?
I’ve volunteered to have my head 3-D printed, and am checking out the equipment at the State University of New York. As it turns out—great relief—I don’t have to stick my head into the box after all; that’s where the “printing” occurs, not the scanning.
The professor tells me to just sit upright and stay super still on a chair for a little over a minute, while his assistant uses a hand-held scanner—making several passes of the sides and top of my head and neck from about 30 inches away.
In a couple minutes, the glass box starts to make noise and comes alive. The “printing” begins. For the color of my little sculpted head, I’m given a choice of red or white. Red seems a bit creepy, so I go for white. The plastic substance is long and cord-like, about 1/8 inch in diameter, and wrapped around a big spool at the back of the printer. One thin white layer after the other is laid down. It builds up, and slowly a tiny replica of my head begins to take shape. Half an hour, and it’s done.
Sure enough, this looks like a miniature Roxie, about 2 inches high, with a flat back where it lay down on the printer, although the machine appeared to have quit just before it reached the tip of my nose, which is kind of cut off.
So what can be done with this new kind of printing? Well, it is already being used in dentistry for making crowns. Jewelry can be created from metals, even gold. You can actually make plastic guns using this method. Unfortunately (or should I say fortunately), they don’t work very well—the plastic gets distorted rapidly from the heat and action of shooting a bullet.
But maybe the most fun is making food. Nursing homes in Germany are taking pureed food and making it into appetizing shapes. NASA is researching making 3-D pizza in space. Instead of white plastic maybe I should have asked for chocolate—and turned myself into a delicious dessert.
Roxie is an illustrator as well as an author. Check out "Market Maze"... learn where your food comes from in a lively interactive informational book, with seek-n-find and a continuous maze. Answer key in the back, if you can't find your way! Starred review, Kirkus.
The Explainer General
The real Dracula didn’t drink blood or sleep in a coffin. He was not a count but an honorable, well-educated warlord. And much, much scarier than the movie Dracula.
As a Knight of the Dragon Society his father, Vlad II, was called Dracul (“dragon”) . When Vlad III was born in 1431, he was called “little dragon,” Dracula. He was always loyal to his family, friends and to his people, but he was betrayed over and over, beginning with his father. Dracul gave Vlad and his brother Radu to the Turks as hostages—then attacked the Turks!
Wallachia (now part of Romania) was harried in the south by Turkish Moslems. In the north, Hungarian warlords schemed to take over. When the Turks killed his father, Dracula escaped to defend his country and his people.
His methods were rough. He punished offenses large and small by impaling. A long sharpened stake was pushed into the offender’s bottom, then raised upright. Death might come in an hour or in two days. He raised a forest of stakes with impaled offenders in a valley near his capital, Tirgoviste.
Messengers came from the Turks to demand tribute money. Dracula asked why they didn’t take off their turbans as a sign of respect. They said they never took off their turbans. Dracula made certain they didn’t. He had the turbans nailed onto the messengers’ skulls.
An enormous Turkish army attacked from the south. Dracula retreated wisely, seizing and impaling hundreds of the invaders’ stragglers. He made a fierce night attack on the sultan’s camp, killing thousands of Turks before he was beaten back. But when the Turks approached Tirgoviste they rode through a valley lined with 20,000 impaled corpses. The most recent victims were Turkish soldiers. The Turks were so scared that they turned back to home.
Dracula ruled for only seven years. His brother, Radu the Handsome had converted to Islam and swept into Wallachia with the Turks. Another betrayal. Dracula was defeated.
Was Dracula a fiend or a warrior sternly protecting his people from the invading Turks? We just don’t know. We can’t believe the grisly tales his enemies told about him. Best historical guess: Wallachians both loved and feared him. You can see that in an historic tale. Vlad Dracula placed a fabulous goblet at a fountain in Tirgoviste. Any citizen could drink from the golden vessel. It was never stolen. They were too afraid.
Jan Adkin's DK Biography: Thomas Edison tells the story of the famous inventor, from his childhood as an "addled" student, to his reign as the "Wizard of Menlo Park," where he developed the electric light bulb, the phonograph, and many other inventions still in use today. For more information on the book, click here.
Adkins is a member of iNK's Authors on Call and is available for classroom programs through Field Trip Zoom, a terrific technology that requires only a computer, wifi, and a webcam. Click here to find out more.
-the "Julia Child" of kids' hands-on science
Ever taste a stale potato chip? If not, here’s how to make one:
Big difference, no? It’s enough to worry a potato chip manufacturer. There are two things that make a potato chip stale. Can you guess what they are? Okay, I’ll tell you: Air (specifically oxygen in the air) and light. So potato chip manufacturers know that if they want to keep their chips fresh, they have to remove oxygen and light. How do they do that?
Take a close look at an opened bag of potato chips. It is foil-lined to make it light proof. An unopened bag is very puffy because it is filled with a gas. This puffiness protects the chips from breaking. But the gas in the bag is not air, which is a mixture of about 20% oxygen and 79% nitrogen. It is air without the oxygen, so it’s mostly nitrogen.
You can prove this. Oxygen is needed for fire to burn. If the air around a flame is flooded with nitrogen, the flame goes out. So you can use the gas in a bag of potato chips to put out a candle. Here’s how:
Now you know how to extinguish a flame with a bag of potato chips. You have also proved that there is no oxygen in a potato chip bag! And you know why!
Now go educate some grown-up.
Vicki Cobb’s best known book is Science Experiments You Can Eat.
The new, next revision will be out in the summer of 2016.
Vicki is a member of iNK's Authors on Call and is available for classroom programs through Field Trip Zoom, a terrific technology that requires only a computer, wifi, and a webcam. Click here to find out more.
A Taste of Nonfiction Minutes
Scroll on down. We've given you a selection of Minutes initially posted during the school year 2014-2015. With some variation we'll be reposting and recreating our archives beginning September 8, 2015. When we get funding, we'll create another year of new Nonfiction Minutes.