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Here Come the Cicadas

4/30/2019

Laurence Pringle
celebrating nature, inspiring good writing

Almost every spring an amazing event in nature happens in parts of the United States. Huge numbers of insects called periodical cicadas emerge from the soil. For a few weeks they fill the days with loud buzzing calls.

Every summer you can hear the calls of some kinds of cicadas, but periodical cicadas are different. They exist only in the eastern two-thirds of the United States, and have the longest of all insect lives. Some periodical cicadas live 13 years, others 17 years, with nearly all of that time spent underground. Young cicadas, called nymphs, sip water and nutrients from tree roots. The nymphs count the years, probably by sensing changes in tree sap, as it is affected by the seasons of each year.

When their countdown ends and soil warms in the spring, millions of cicada nymphs dig out. They climb posts, bushes, and trees, and cling there. Their nymph "skins" split open and adult cicadas wriggle free. Finally, after many years underground, they are out in the sunshine. They can fly, and the buzzing noises of males attract females. It is a noisy and hectic time in their lives. They have just a few weeks to mate and produce the next generation. Once females lay eggs in tree twigs, all of the adults die. Soon after, tiny nymphs hatch from the eggs. They drop to the soil, borrow in, and begin to sip juices from tree roots. The nymphs grow slowly, counting the years until they will have their own time in the sun.

Nearly every year, one or more populations, called broods, of periodical cicadas emerge. Seventeen year cicadas live mostly in the Northeast and Upper Midwest. Thirteen year cicadas are most common in the South and Lower Midwest. Some broods emerge in parts of just a few states. Some years, a more widespread brood emerges in parts of fifteen states. Notice that I say "parts" of states. These cicadas don't roam around. The nymphs go underground in the same places where their parents emerged. You will find them in one town but not another, in one neighborhood but not another.

Some people call cicadas "locusts," but locusts are a kind of grasshopper that eats plants. Cicadas do not chew on plants. They are harmless, fascinating creatures. And, once in a great while, they give us a rare and awe-inspiring animal spectacle.

A time sequence photo of a cicada molting (shedding its skin). Wikimedia Commons

Face to face with a periodical cicada: you can tell because these remarkable North American insects have black bodies and red eyes. All cicadas have five eyes, with three tiny ones that form a triangle between two big ones. Wikimedia Commons

Visit the great website, Cicadamania, which has high praise for this book: "Definitely the best cicada book for kids. Adults will appreciate it as well, as it is well written, factually accurate, and beautifully illustrated."
You can read more about Larry's fascination for these creatures on his website.

MLA 8 Citation
Pringle, Laurence. "Here Come the Cicadas." Nonfiction Minute, iNK Think Tank,
23 Apr. 2018, www.nonfictionminute.org/the-nonfiction-minute/
Here-Come-the-Cicadas.

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Spring Break

4/20/2019

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April 22 (Earth Day) to April 26 2019 the iNK authors are taking time to smell the flowers. Hope you do so as well. See you with a new crop of Minutes on Saturday, April 27

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The Big Deal in Mr. Peale's Museum

4/18/2019

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Cheryl Harness
She’s historical!

While helping to win his country’s independence from Great Britain, Captain C. W. Peale painted General George Washington’s portrait. Cleveland Museum of Art via Wikimedia

It was December 24, 1801, when bundled-up Philadelphians bought their 25¢ tickets and entered Peale’s Museum on Fifth Street. Once inside, they saw the owner’s paintings. And I’ll bet you have too—even if you’ve never heard of Charles Willson Peale. This one, for instance, of his fellow Revolutionary War soldier:

Visitors to the museum had seen Peale’s collections of butterflies, too, and other nature specimens, such as the fossilized teeth of mysterious beasts. (Who knew then that animals went extinct? Hardly anybody!) But on this extra-special Christmas Eve, people probably hurried past Peale’s handmade dioramas, with the lifelike bodies of birds and mammals that he’d stuffed and posed. Today, Mr. C.W. Peale himself was introducing his NEW ATTRACTION. People had paid an extra 50¢ just to see it! Now they looked up, up, UP at it, and were astonished.

What animal’s skeleton was eleven feet tall? Seventeen and a half feet from its bony tail to the tips of its giant, curving tusks? It was a mastodon.

It was not clear, in 1801, that mastodons weren’t the same as wooly mammoths. Wikimedia

No one had seen a live mastodon in more than ten thousand years. So how did one’s bones get to Philadelphia? Mr. Peale and other naturalists such as Thomas Jefferson, the new President-elect, wrote to one another about their studies, collections, and the latest discoveries, such as like these huge, mysterious bones in southern New York state. Some of North America’s long-gone mastodons ended up there, by the Hudson River. As soon as he heard about them, Peale hurried to see them. Then he not only figured a way to dig up the bones, but he also painted a picture of the huge excavation!

In Peale’s painting “Exhumation of the Mastodon,” he shows some of his children (He had seventeen!) and how he had to pump water out of the beast’s muddy grave. Wikimedia

Peale’s son, Rembrandt helped to draw and assemble the bones:

Rembrandt Peale drew the mastodon skeleton that he’d helped his dad to assemble. C.W. taught his many children – seventeen in all, many named after artists and scientists he admired – to draw, study, and help with his nature exhibits. Wikimedia

For years, people paid to marvel at the enormous, sensational skeleton. Later on, after Mr. Peale’s death in 1827, his museum slowly went broke. P.T. Barnum, the circus showman, bought a lot of his exhibits. Later still, they were destroyed in a fire. And the mighty bones of the mastodon wound up lost for a hundred years, until the skeleton turned up in Germany, where you can see it today.

Mr. Peale painted himself in his marvelous museum, where people could marvel at and learn from the works of Nature. Wikimedia

Hessisches Landesmuseum (Hessian State Museum), Darmstadt, Germany, where Peale's mastodon still stands today.

In Thomas Jefferson, her sixth presidential biography for National Geographic, Cheryl Harness illuminates the many sides of Thomas Jefferson: scientist, lawyer, farmer, architect, diplomat, inventor, musician, philosopher, author of the Declaration of Independence, founder of the University of Virginia, and third president of the United States. Readers meet this extraordinary man of contradictions: a genius who proclaimed that "All men are created equal" and championed the rights of "Life, Liberty, and the Pursuit of Happiness," while at the same time living a life that depended on the enforced labor of slaves.

MLA 8 Citation
Harness, Cheryl. "The Big Deal in Mr. Peale's Museum." Nonfiction Minute, iNK
Think Tank, 18 Apr. 2018, www.nonfictionminute.org/the-nonfiction-minute/
The-Big-Deal-in Mr-Peales-Museum.

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Flat Paper Flight

4/12/2019

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Jan Adkins
The Explainer General

Since he was a boy, John Collins has been fascinated by paper airplanes. Who isn’t? Most of us have folded the familiar dart-shaped classroom airplane. Good fun. And it’s science.

Big and small aircraft depend on the same four principles: weight (of the craft), drag (wind resistance over the craft), lift (upward force from air passing over the craft’s flight surfaces), and thrust (what pushes the craft). A 747 Jumbo Jet and a paper airplane depend on the same forces.

     Collins wanted to fold this aeroscience into paper. But how to build (fold) complex principles into something so small?

     He found the ancient Japanese art of origami and used its sculptural tricks. He created paper aircraft that do astonishing things. One comes back in a horizontal circle, like a boomerang. Another flies up, turns over and comes back vertically. One actually flaps its wings as it glides slowly. To John, they’re all working science experiments: every flight leads to some knowledge and to new ideas for tweaking the aircraft so it flies better.

     John Collins became “The Paper Airplane Guy.”  He believes that scientific research happens everywhere, every day. He says, “It doesn’t take computers, lab coats, microscopes and the like. It takes a hunger to know. Science is just the structured way we find stuff out. The science you can do with a simple sheet of paper is no less important than what can be done with an electron microscope.”

     On February 26, 2012, John and Joe Ayoob stood in a big, windless aircraft hangar with John’s best-so-far flyer, Suzanne. (He named it after his wife.) Joe was a professional football quarterback who learned to throw Suzanne hard but steady, not like a football but like a delicate piece of origami. Joe threw Suzanne up, up, and it dived down to fly – really fly – 226 feet and 10 inches, the Guinness World Record for distance thrown.

     John wanted paper airplanes to welcome young people into science. He started a National Paper Airplane Contest called the Kickstarter Project with a big prize for anyone who throws Suzanne farther than Joe. Or you could throw your own better, more aeronautically elegant paper airplane. It was a simple, scientific task. Every paper airplane and every flight would be a new experiment, just as important as the Wright Brothers’ Kittyhawk flight. Science isn’t just geeks and labs; we’re all part of it. The project didn’t get support and ended. John would like to direct people to  www.TheNationalPaperAirplaneContest.com. Air and Science museums across the country will be hosting events. The museums get three Fly for Fun Days; STEM education days that teach basic flight concepts and skills for the national contest.

Some of John's amazing folded planes

If you would like to build your own championship plane Suzanne, begin here with the step of step instructions.

John Collins with one of his planes whizzing past him.

STEP2-Diagonal fold

STEP 3-Unfolded

STEP 5 – Unfolded

STEP 4- Diagonal the other way.

STEP 6 - Fold side to the diagonal

STEP 7 - Fold other side to the diagonal

STEP 8 - Fold across center of diagonal

STEP 9 - Fold the crease

STEP 11 - Fold in half

STEP 13 - One wing done

STEP 10 - Fold the other crease

STEP 12 - Top edge and inner touch for wings

STEP 14 - Both wings done

Step 15 - Done! Note accuracy and dihedral ( good word to research!)

Jan 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.

MLA 8 Citation
Adkins, Jan. "Flat Paper Flight." Nonfiction Minute, iNK Think Tank, 9 Apr.
2018, www.nonfictionminute.org/the-nonfiction-minute/flat-paper-flight.

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How Did Building Bikes Help the Wright Brothers Invent the Airplane?

4/10/2019

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Mary Kay Carson
Storyteller of True Adventures and Real Discoveries

As any paper airplane pilot knows, getting into the air and staying up in the air are two different things. An out-of-control, unstable paper airplane quickly ends up on the floor—no matter how powerfully you threw it. Controlling an airplane was the problem yet to be solved in the late 1890s. Many of the inventors racing to be the first to build a powered flying machine didn’t understand that controlling an airplane is different from controlling other vehicles of the time. But the Wright Brothers did.

Unlike a car or boat, an airplane moves in three directions: pitch, yaw, and roll. Stable flight takes correctly controlling all three.

When you steer a boat, you move a rudder to go left or right. This is yaw. Turn a rudder on its side and you get an elevator, which controls a submarine as it dives and surfaces. This is pitch. Airplanes also have elevators and rudders. But flying takes more than up-down and right-left control. An airplane also tilts side to side, in a motion called roll. Think of a jet tilting its wings as it changes direction. Or a little kid zooming around with tilted arms spread wide.

Controlling the roll of an airplane was the secret to stable, sustained flight. And this is where the Wright Brothers had an edge. They built bicycles. A bicycle is an unstable vehicle when it isn’t moving. In fact, it falls over. A moving bicycle is much easier to balance than a stopped one. And steering a moving bicycle is more than just turning the handlebars right or left. The rider must lean into turns, tilting his body to keep balanced. Sound familiar? It’s the same kind of motion as roll.

Orville and Wilbur Wright knew about roll and worked on a way to control it even while experimenting with gliders. They controlled roll through wing-warping, a system of cables attached to the wings that twisted their shape, like twisting an empty aluminum foil box. The pilot controlled which way the wings warped by moving his hips as he lay on the airplane in a kind of cradle. Soon ailerons, those flaps on the backside of airplane wings, became the controller of roll. But the brothers of the Wright Cycle Company figured it out—and flew—first.

If you look at pitch, roll and yaw together you can see that each type of motion helps control the direction and level of the plane when it is flying. The ailerons raise and lower the wings. The pilot controls the roll of the plane by raising one aileron or the other with a control wheel. The rudder works to control the yaw of the plane. Pressing the right rudder pedal moves the rudder to the right. This yaws the aircraft to the right. Used together, the rudder and the ailerons are used to turn the plane. The elevators which are on the tail section are used to control the pitch of the plane. Lowering the elevators makes the plane nose go down and allows the plane to go down. By raising the elevators the pilot can make the plane go up.

First successful flight of the Wright Flyer, by the Wright brothers. The machine traveled 120 ft (36.6 m) in 12 seconds. Orville Wright was at the controls of the machine, lying prone on the lower wing with his hips in the cradle which operated the wing-warping mechanism. Wilbur Wright ran alongside to balance the machine. Library of Congress

Mary Kay Carson's The Wright Brothers for Kids: How They Invented the Airplane, 21 Activities Exploring the Science and History of Flight tells the amazing true story of how two bicycle-making brothers from Ohio, with no more than high-school educations, accomplished a feat on the beaches of Kitty Hawk, North Carolina, that forever changed the world.

MLA 8 Citation
Carson, Mary Kay. "How Did Building Bikes Help the Wright Brothers Invent the
     Airplane?" Nonfiction Minute, iNK Think Tank, 28 Mar. 2018,
     www.nonfictionminute.org/the-nonfiction-minute/
     How-Did-Building-Bikes-Help-the-Wright-Brothers-Invent-the-Airplane.

2 Comments

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Here Come the Cicadas

Spring Break

The Big Deal in Mr. Peale's Museum

Flat Paper Flight

Jan 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.

How Did Building Bikes Help the Wright Brothers Invent the Airplane?

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