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 Centauri. 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 M. Schwartz, 2014 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. He can visit in your classroom via interactive video conferencing. Learn more here. MLA 8 Citation Schwartz, David M. "What Is a Light Year?" Nonfiction Minute, iNK Think Tank, 14 Sept. 2017, www.nonfictionminute.org/the-nonfiction-minute/what-is-a-light-year.
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How often do you check your cell phone or email each day? Use Twitter or Facebook? Can you stand not to “stay in touch” for even one day? We’re used to being able to hear from people anywhere in the world at any time, with just a few taps on a keyboard or telephone pad. Through most of human history people could only communicate when they were within shouting distance. When alphabets came along, our ancestors could create messages on stone or wood and later on parchment (made from animal skin), or paper, made from wood pulp. Then, of course, the message had to get from one person to another by way of a messenger. When public mail came along, it made that process much easier and more reliable. That’s where things stood for a long time. Imagine being a soldier in 1804 joining explorers Meriwether Lewis and William Clark on their epic trek across the west to the Pacific Coast. This was territory almost totally unknown at the time to European Americans. You’ve left behind your family and all your friends. Now you have no way of finding out what happened to those dear to you. Did your father or mother die? Did a sister get married? How many babies were born? Your loved ones get to be a bit luckier, since in the spring of 1805, the keel boat that carried the expedition to Indian villages for the winter is sent back down the Missouri River with a small crew, and you get a chance to write notes to your loved ones, reassuring them that you are okay. A lot can happen during a 2½ year span like the one endured by members of the expedition! Finally, in September of 1806, you and your colleagues return to the St. Louis area and find out that most people assumed you were all dead. Now you must figure out as quickly as possible how to reconnect with family and friends. It won’t be easy, since they don’t know you are alive, and you don’t know where they are after so long. How can you even locate everyone you care about? Think about it: If you didn’t have email or a phone of any kind, whose messages would you miss the most? And who would you most wish you could tell about these events in your life? Dorothy has written about how the horse changed the lives of the Plains Indians and everything that followed. Dorothy Hinshaw Patent 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. MLA 8 Citation Patent, Dorothy Hinshaw. "Keeping in Touch." Nonfiction Minute, iNK Think Tank, 4 Oct. 2017, www.nonfictionminute.org/the-nonfiction-minute/keeping-in-touch. See note at end. This is now history. Babies born around this time are now adults. A cowardly bully came out of his cave today to trespass on our shining city. Out of the blue he had the nerve to punch out its two front teeth. The pain is excruciating; Bleeding is everywhere. The remaining stumps are grotesque. We've lost our pretty smile. We can't bite a big apple. It's hard to look at mutilation. Dazed, we check for damage. Although choking on thick air, we are very much alive. Our heartbeat is strong. There is no drop in our vital signs. Blood rushes in to replace blood lost. Slowly we discover we can still chew and make a fist and think. Oh yes, we'll make sure this "holy" terror can never return to our playground or our friends.' But how? How do we shadow box a villain who doesn't play by the rules? We see evidence of our noble, generous, and loving spirit. Yet hate destroys within as well as without. Here then is our challenge: We must keep this wound from festering becoming toxic to ourselves. We must imagine the unimaginable to thwart evil before it comes back for more. We must seek justice, not vengeance to preserve our soul. We must trust our leaders who see more than this one tormenter. We must be brave and patient and faithful. As good as we believe ourselves to be, we must become better. Scar tissue is stronger than unscarred. Text copyright © 2001 by Vicki Cobb Reflection: I wrote this poem on September 12, 2001. I am a New Yorker. One grandson, who was 4, was starting school, a few blocks from ground zero. My husband was working in the city. It was a terrible day. I wrote this poem to try and make sense of it for my readers. Do you think it is still true today? Here I am in 2014 on the 43rd floor terrace in lower Manhattan. The brand-new Freedom Tower, on the site of the Twin Towers lost on 9/11, soars behind me. It is 1776 feet tall.
MLA 8 Citation Cobb, Vicki. "September 11, 2001." Nonfiction Minute, iNK Think Tank, 11 Sept. 2017, www.nonfictionminute.org/the-nonfiction-minute/category/cobb-vicki. Have you ever been asked to revise something that you wrote, but had trouble doing it? Maybe you didn’t know where to start? Maybe you thought you might actually make it worse than before? Maybe you thought it would be too hard? Believe me, I get it. When I sit down to revise, I am often filled with fears about doing it. Over the years, though, I’ve come up with three simple steps that help take the fear out of revision. Let’s see how to use them when revising the most important chunk of writing—the paragraph. When I revise a paragraph, my first step is to ask myself is “What’s this paragraph about?” Usually, I’ve already written a sentence that tells me. It’s called a thesis sentence. A thesis sentence can be something kind of loose such as “Skateboards rock,” or it can be specific such as “Yesterday, I had my best skateboard ride ever.” The point is that this sentence tells me what the rest of my paragraph needs to be about. When revising, I find it helpful to underline my thesis sentence. Step Two is to make sure that my paragraph makes sense. Here, I check that every sentence helps prove or explain why my thesis sentence is true. I also make sure that none of my sentences are confusing. If they are, I revise them so they are easier to understand. I especially look for sentences that don’t really say anything, such as “Skateboards are, like, the best.” I’d either delete this sentence, or improve it to something like, “Skateboards provide great exercise.” After my paragraph makes sense, I move on to Step Three: making my paragraph more fun. I replace boring verbs with more exciting ones. Instead of saying “My skateboard was fast,” I might write, “My skateboard hurtled down the ramp.” I put in better descriptions. I also might crack a joke, or throw in a simile such as “My skateboard carried me like a four-wheeled chariot”—or a metaphor, “My board launched me into the stratosphere.” When tackling revision, I recommend having someone else read your writing aloud. That helps you spot problems. Even so, I don’t always nail a revision the first—or even the tenth—time. I revised this nonfiction minute more than a dozen times! The important thing is to not let your fears overwhelm you. Remember that revision is simply the process of you saying what you want to say. What happens when a bestselling nonfiction children's book author pairs up with a nationally known writing teacher to discuss revision strategies? Magic. Sneed B. Collard III and Vicki Spandel blow the roof off everything you thought you knew about teaching nonfiction writing and the purposes for revision. Dozens of strategy lessons pulled from Sneed's professional writing experience followed by Vicki's classroom-savvy tips and exercises give you the nuts and bolts of teaching revision to make nonfiction writing more meaningful, useful, and enjoyable for the reader. Using a "big-to-small" process of revision, from Big Picture ideas down to individual words, Sneed and Vicki demystify revision and help students become clear, persuasive, compelling-even entertaining-writers. "With your encouragement and guidance," they write, "students will discover the joy of turning their first rough ideas into something readers cannot put down." MLA 8 Citation
Collard, Sneed B., III. "Taking the Fear Out of Revision." Nonfiction Minute, iNK Think Tank, 30 May 2018, www.nonfictionminute.org/the-nonfiction-minute/ Taking-the-Fear-Out-of-Revision. Do you like ketchup? Maybe relish is your favorite condiment. Well, people in the ancient world had a favorite condiment, too. It was called garum. The ancient Greeks couldn’t get enough of it. Later, the Byzantines loved it, too. But garum was most popular during ancient Roman times. (The Roman Empire lasted from 27 BC to AD 476, so they must have gobbled down a lot of garum.) The problem with garum was that making it could be an extremely stinky process. Garum makers were told to move their factories to the outskirts of the city, although probably no one enforced this. The Romans dumped garum onto practically everything they ate. Should you be curious to try garum yourself, I’ve written out the recipe for you. You’re welcome.
Garum is actually quite nutritious—full of amino acids, proteins, and vitamin D from all that time in the sun. And the rotten sludge left at the bottom is also highly nutritious, so you can save that for another use. Try spreading it on toast! (c) Sarah Albee, 2014 A Roman banquet Sarah Albee's latest book is Poison: Deadly Deeds, Perilous Professions and Murderous Medicines. You can read a review that gives you a dose of what's in this book. MLA 8 Citation Albee, Sarah. "Something's Rotten in Rome." Nonfiction Minute, iNK Think Tank, 15 Sept. 2017, www.nonfictionminute.org/the-nonfiction-minute/somethings-rotten-in-rome. |
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For Vicki Cobb's BLOG (nonfiction book reviews, info on education, more), click here: Vicki's Blog
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