TÜVtel 2.14 - Children's Magazine

The Children's Magazine by TĂœV Rheinland

2014 | Edition 2

Posters Waterfalls and Big Ears

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Co ol: Staying ksters c i r T o m he Ther

u Testing o Y e r a t Wha Sli des r e t a W There? eck-Up h C a t e G

A lwa ys on the B all

Contents

In this issue, you‘ll find ...

22

Tr y It Out

qualization Pressure e at ns – does th with balloo s tel perform work? TÜV t. n e the experim

Always on the Ball

Soccer is much more than just a game. Learn more about the history of the world‘s most popular sport.

Fast Facts 4 Soccer 6 PLAYMOBIL 10 Air Conditioning 12 Think Twice 14 Guess 15 Tess and Roby 16 Behind the Scenes 20 Try It Out 22 Fan Page 23

10 tForoCmasBeads

ce

tles

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6

How PLAY MOBIL ma kes the Lion Knigh t‘s Empire Castle.

TÜVtel wa s there.

20

sting e T u o Y e r a What There?

behind the A glimpse Vtel goes to scenes: TÜ water slide work with r. ans Küppe inspector H

TÜVtel

2

Tess an d Roby

The two friends sh are a spo camping oky adventure .

16

12 NSoweTatha?nks!

Air conditioners make our lives easier on hot days. Animals have their own tricks.

Hey, TÜV kids!

Around the world, people play nearly 500 different types of sport. But one of them is a huge favorite: soccer. Our ancestors in China were kicking balls around as early as 4,000 years ago.

Those ones were made from sewn-up bits of leather and filled with animal hairs and feathers.

However, England was the origin of the soccer match as we know it today.

There, the first rules were established about 150 years ago.

In TÜVtel, you‘ll discover how soccer was transformed from a massive brawl over a ball made from fabric pieces into an orderly match, as well as plenty of other special facts about the popular ball game.

Enjoy reading TÜVtel!

Tess and Roby

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Posters

in Brazil The Iguaçu Falls through the thunder loudly h quieter forest. It is muc ith the in the desert w still prick fennecs, yet they hy? Read up their ears. W d out. the posters to fin

TÜVtel

3

Fast Facts

Hot slide

Massive

The inte rnet is h uge and it is cons tan tly getting bigger.

Unbeliev able vo l umes of data are bein g uploade d ever y day.

Take the vi deo po rtal Yo uTube , for exa mple.

If yo u w ante d to watch all the v i deos th at were adde d t o it in j u s t o ne day, it w o uld tak e yo u m than 16 ore years. C razy!

nd heinla R V Ü T tly requen also f s new upload to vi deos be.

Yo uTu

Yo u can burn yo urself on a hot sto ve. Everyone knows that. But the same thing can also happen to yo u at the playground.

If a metal sli de is stand ing in the blazing sun, it becomes ver y hot.

That is because metal can absorb and retain heat extremely well.

TÜV Rheinland gives the all-clear for equipment made of wo od or plastic. These materials do not heat up and cannot burn yo u.

wer o t l iffe The E ing! w o r ris is nd is g in Pa a

ower ters hig h fel T f i me E s as The n 320 ns. That i so a h t to ts, more p han uess 7,000 e l s e h g t g 000 wei as 1, g iant. Bu y up to h c u b a m uite ing at q w s o i r es th ron it o is g d t t I i I ? what timeters! cause the ter, n n e i b e er n w he 15 c sum m he heat. I ain as t y r e g a ev in t rinks ract. nd s expa ucture sh ron cont tr he i the s kes t a m co ld

TÜVtel

4

fel The Eif s Tower i 125 already d. l years o

igh flying h

toys d new n a r b any toy ear, m at the e r e i Each y m o ne s eir pre e bes t h T . g r have th bu Toy Nurem le d the l s a c fair in e z w inner pri 's a r a e e v i y rece this d mini One of e l . l d o r r a t Aw -con Nano remote ame is n s t was a I ix copter. y for s fl quadro n a c nd it Q uad a time. s at a e t u n i m

brutal bl oodsuck ers are littl e

hoever O uch! W down sli des ll get here w i ng hot a burni rise. surp

Ticks vampire like mo s. With t uth part heir spin s , they pr o ut blo o eick the d. They skin to like bitin it doesn suck g legs b 't hurt, y e s t. o u W bite. hile can get sick f ro m a tick The tiny creature s usuall grass or y sit on among t blades o he leave their ne f s and w xt victim ait for . Are yo u garden, often in in parks the , in mea the fore dows or s t in the n e ar sum mer has so m ? TÜV Rh e tips on e in land how yo u yo urself can prot f ro m tic ect k bites: • Wear l ig ht-co l ore d clo spot tick thing: It s s traig h helps yo t away.

• Co ver u to up: Prot ect yo ur long-sle ar ms an eve d shir d legs w ts and l • Keep y it h ong pan o ur feet ts. safe: We shoes. ar socks and clo • Lo ok se d closely: Get yo u yo u all r parent o ver aft s to che er o utdo ck or adve n t u r es.

If a tick does ge t ho ld o carefull f yo u, it y be rem sho uld o ve d im of tick me d iate tweezers l y w it h a p or a tick air card.

TÜVtel

5

Soccer

l l a b e h t n o s y a w l A Nothing gets kicked as hard but at the same time loved as much as a soccer ball. For many thousands of years, it has dominated the playing field. However, a lot has changed about it over time.

A ball tells all.

"I am in high demand. People run after me wherever I roll or fly. Everything on the field revolves around me. I am the round thing that has to go into the rectangular hole. I am a soccer ball.

I bet you are thinking: "Ha ha, he is so full of hot air!"

But honestly, would you want to play with me if I was all floppy? Probably not. And I want to play! I want to be passed, dribbled and slammed into the nearest goal with plenty of oomph - at least as well as my famous relative Brazuca, the 2014 World Cup ball from Brazil.

He is a real star right now and he looks great with his unmistakable colored loops. But when it comes to being kicked into the opponent's goal, we are all just the same.

Read more on page 8 →

TĂœVtel

6

Soccer is the most popular sport on our planet.

St ad iu m Seat s Under S cr ut iny

with: ve a lot to cope ha s at se m iu ad St then up cheering and Elated fans leap ain. es back down ag plonk themselv forth and ously back and They slide nerv te that, sts wildly. Despi re ck ba e th e ak sh t to tators still wan of course all spec is why mfortably. That sit safely and co TĂœV , testing institute at the furniture adium ines whether st Rheinland exam rain. st and the heavy seats can withst

In the hot seat: These chairs are being rocked, pushed, pulled and shaken for all they're worth.

A Q u ick Wave An unexplained phenomenon: Mexican waves almost always move in a clockwise direction.

A Mexican w ave speeds through the stadium at a rate of about 12 m eters a secon d.

That makes 20 seats per second, a fact that w as established by physicists fro m the TU Dre sden university usi ng video foo tage.

In compariso

n, the world's fastes t runner, Usain Bolt, co vers 100 meters in 9.58 seconds. At that pace, he wou ld not stand a chan ce of catching up with the speedy wave.

TĂœVtel

7

Soccer T hom i m pr a s M Ăź l l e r e h i s s s s e s w it h peed , sco a bi l it r i non s e s a nd n i ng oense s t yle pl a y i . ng

Ba stian Schwein ste iger scores point s for his creativit y and pre cis e pa sse s.

A s t he c apt Ph il ipp L a in, a h m is re s pon s ib le h is t ea m for .

Mats Hummels is known for his brilliant technique and fair play.

Tsu Chu came first What many people dream of: kicking like a pro from the German national team.

The Chinese already played a game similar to soccer more than 4,000 years ago. It was called Tsu Chu and the aim was to get a leather ball into a narrow net that was attached to two bamboo poles. The players could only touch my feather and hair-filled ancestors with their feet, chests, backs and shoulders. To be a great Tsu Chu player, you needed a whole lot of practice and agility, as well as very good body control.

Brawling for the Ball It was a completely different story in medieval England.

Brute force was what counted there. I would not have liked to have been in use back then. The balls were made of scraps of cloth that were held together by a net and they were as big as medicine balls. They were not very attractive, I tell you, especially not after they had been trampled on for several hours by countless feet. At the time, it was not just two teams of 11 players competing against each other for 90 minutes, but two entire villages playing for several hours. The town gates were the soccer goals and everyone could join in. There were hardly any rules. People would push, kick and hit each other. They could do anything they liked to get the ball.

TĂœVtel

8

Miracle C leats

rollably er players slid uncont For a long time, socc ther ugh shoes that had lea over the ground in ro ny les. They missed ma cleats nailed to the so in time st Ju in the process. scoring opportunities i Dassler, p in Switzerland, Ad for the 1954 World Cu ped mpany Adidas, equip the founder of the co had at th soccer shoes th the German team wi cleats. With those on replaceable screw-on team defeated the their feet, the German team 3:2 and took very strong Hungarian title. The legendary home the World Cup the Swiss capital of match took place in refer to it as the Bern, so many people "miracle of Bern".

Rules upon rules

Professionals like Julian Draxler never go out on the field without cleats.

Because soccer mostly ended up causing a major brawl, the authorities tried to ban it time and time again. They were not successful, which is lucky for me because otherwise I would be totally useless! However, they did gradually introduce more rules to reduce the number of injuries. While things are not quite as rough these days, soccer players still jostle, jump on and push each other, so now there is a referee to keep everything under control. For 124 years, the referee has been the only person in charge, constantly reminding players that along with a flawless technique, a good game also requires fairness, team spirit and self control.

Not only the players had to follow new rules. Nothing was left to chance on the field either - at least not in today's Ende professional soccer. For example, the playing field for the World Cup has to be exactly 105 meters long and 68 meters wide. The distance between the goal posts is 7.32 meters. Each link in the goal netting has a diameter of 12 centimeters. And so on and so forth. Of course, you don't have to worry about all of that if you are just going out for a kick. All you need is some space, two goals, a few friends and one of my colleagues. And a lot more team spirit than people had in the Middle Ages!" ;-) The end

Did you know?

At the RoboCup German Open, 27 German teams qualified for the robot world cup.

lel to p in l a r a P u rld C re also o W the obots a r fo l, r Brazi ompeting the c y in up. h p o r a t l RoboC a annu Ever internat y i goal ne onal t 2,800 has holes.

Goal keepers r Neue like Manuel irs of pa use over 50 ason. gloves per se

Brazuca is the

offi the 20 cial ball of 14 Wo rld Freely t ranslate Cup. d means e motion, , that pri warmth de and .

TĂœVtel

9

PLAYMOBIL

From beads

TÜV you tel sh ow h knig ow the s cas ht's Em lion tle was pire mad e.

It takes two to three years before an idea and a mountain of plastic beads become a real toy.



 

plans On the PC: First, the dels are are drawn up and mo and built out of cardboard l is then foam. The best mode reconstructed on the computer.

Brainwork: Head of Development Bernha rd Hane and his employees loo k at books, exhibitions an d films about knights' castles . They also read letters from child ren about how they think castl es should look and what they wi sh for.

TÜVtel

10

The main ingredient: PLAYMOBIL is made out of synthe tic granules.

The beads are melte d and poured into the injection mo lds.

Fits the mold: Using the computer data, an injection mold is created for each part.

The Lion Knight's Empire Castle has 290 individual pieces!



to Castles



Piece by piece: At the factory in the Bavarian town of Dietenhofen, th ere are more than 420 in jection molding machines.

Each part of the castle is produc ed by a different one of them.

yage, o v n BO es! u g a e coll

Bye bye: The finished castles are delivered to the toy stores.

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

A quick makeove r: Some pieces, like the castle ga tes, go to the printer for a mor e detailed design .

All Making mini people: factory figures are made at a e castle in Malta, including th inhabitants.

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sembly All packed: On the as ces and line, all the castle pie together. figures go into a box check They are weighed to . ing ss that nothing is mi



TÜVtel

11

Air Conditioning

A brilliant invention cools people down on hot days.

Sweat?

Luckily for Tess, Roby remembered to pack the fan.

ters s k c i r T o m r e Th nnot sweat.

Many animals ca own tricks to They have their beat the heat.

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12

Tong ue out Pant the s ing makes aliv mout a in a dog h evap 's That helps orate. it c down from ool inside the .

headstand whawk The meado en its abdom s e h c t e r t s at sun so th e h t s d r a tow t rays can o h r e w e f far strike it.

A cool s wim Birds lik e to take a ba th and fluff the mselves up to stop too muc h heat accumula ting und er their fea thers.

No Thanks!

In ancient Egypt, the rulers made their servants fan them with giant fronds. That must have been exhausting - at least for the servants. An appliance that cooled the air automatically would have been much more practical.

Such a device was invented many thousands of years later by the engineer Willis Haviland Carrier. He spent a long time tinkering away at a machine that could cool down warm air, clean it with filters and then moisten it. It was finally ready for use in 1902, but sadly nobody wanted to buy one. It wasn't until 12 years later that he managed to convinced a cinema owner in New York to install one of his cooling units. The moviegoers loved it. That was the breakthrough for the air conditioner.

Today, air conditioners are in great demand.

They cool down huge buildings like airports, production plants and supermarkets, as well as houses and cars.

ling o o C c i r t c e l E

e r conditioners. Th r homes with ai ei th ol co place e le on op from Many pe ansporting heat tr of sk ta e th appliances have there. then releasing it to another and y consist ry popular. "The ve e ar s em st sy oning the house and Split air conditi is located inside or at or ap ev e r. The of two parts. Th Stephan Scheue ns ai pl ex " e, id outs es einland describ the condenser is es from TĂœV Rh nc ia pl ap al ic tr expert on elec . nditioner works how a split air co e indoor orates inside th ap ev nt ra ge fri : A re the room.

It goes like this s up the heat in ke ta d an s ga a en unit, turns into a a pipe and is th e outdoor unit vi th to d ain re ag er s sf fie lique It is tran . The refrigerant at he as r ai e th pe nd pi . released into it through a seco un or do in e th s into temperature ha and flows back e desired room th til un s ue in The cycle cont been reached.

Liquid refrigerant

Outdoor unit The split air conditioning cycle Indoor unit

Get d irty Mud p a c k s prot ectio offer heat, s n unbur against n thos e pes and also ky b flies. iting

Gaseous refrigerant

TĂœVtel

13

Think Twice

S h a r p v i s i on

Birds of prey circle above their hunting ground and scan the floor for prey. When they spot something tasty, they strike.

Their success rate is high. After all, birds of prey have the sharpest vision of all living creatures. They can already identify a mouse from several kilometers away.

That is because they have a huge number of photoreceptors in their eyes.

See

ing

One watc heading, hing t tele wo sto r v see the ision. Bu ies: Shar topi c fr t if you p vision om a not turn th That's her e ma what fasc g inati azine co we all ng p w ersp unter-c ant whe nw lock ecti ve. G wise e are ive it , a tr you'll y!

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Sharp vision

TĂœVtel

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For a picture to be transmitted to a television screen, it has to be broken down into lots of individual dots. These are called pixels. The pixels for each image are transferred electronically and then put themselves back together bit by bit on the screen. This happens extremely fast. The more pixels a television picture has, the sharper the image will appear.

At least that is the case for high-quality televisions. TĂœV Rheinland checks whether their resolution is good. At the laboratory, it also tests their reception, as well as the colors and contrasts they display.

Guess

Ball Game Can you connect all nine balls using four stright lines, without rem oving your pencil from the paper? If you ma nage it with five lines, then you are alread y doing really well.

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What was the day before yesterday if the day after the day after tomorrow is two days before Wednesday?

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Friday?

You can find the answers on the back page of TĂœVtel.

day

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Word search puzzle Which seven words are hidden here? A little hint: They all have something to do with soccer.

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15

Tess and Roby

The Spirit of the Forest Tess and Roby are looking forward to camping out in the tent. Then the witching hour strikes.

“And suddenly there was a terrible creaking. The bark sprang off the trunk of the old oak tree and a hideous, scowling face appeared. It was the spirit of the forest. With its flashing yellow eyes, it stared furiously at the children. The oak's branches whipped wildly through the air while the roots shot up out of the ground and tried to grab hold of the children. Nobody knows if they escaped because they were never seen again.”

Tess paused dramatically.

“And, are you scared now?” she asks her friend Roby, giggling. No of course Roby isn't scared.

After all, there is no such thing as a spirit, let alone a monster tree. But then a good horror story is part of the deal when you go camping.

Bread on a Stick For this tasty campfir e treat, you need 500 grams of flour, 1 sachet of dry yeast, 2 tablespoons of salt, 2 tablespoons of oil, 250 milliliters of warm water and some sticks that are as thick as your finger.

This is how it goes: Kn ead the ingredients into a dough and let it stand for one hour (preferably in a warm place). Roll the dough into sausages two centimeters thick and wrap each one around a stick. Hold them over the embers and turn them slowly until th e bread is golden brow n.

TÜVtel

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16

A cloud passes in front of the moon and the sky above the forest campsite darkens. Tess yawns. A few bats flutter around the tent looking for tasty insects. Then everything is still. Tess and Roby decide to go back to their tent and cuddle up in their sleeping bags. Suddenly, a loud screech pierces the night. Roby gives a start. “It‘s only an owl,” says Tess reassuringly. But then there is something else. A gentle rustling. “Do you have an explanation for that, too?” whispers Roby.

Campfir

e check List

Tess listens. Something makes an ominous cracking sound in the bushes. A rabbit, perhaps? The friends peer apprehensively into the darkness. Tess shines her torch around.

And then something unbelievable happens: Someone is staring right back at them! Two enormous yellow eyes are glaring at them.

Frozen with fear, they hold their breath as the eyes come closer. And closer. Then Roby can't stand it any longer. He cries out “Aaaaaaaah, the spirit of the forest! It's coming to get us!”

Campin g witho ut a fire ketchup is like ea : really b ting frie oring. B s withou The TÜV ut you h t Rheinlan a v e t o d fire sa do it pro tips for fety exp p e you: rly. erts hav e some • Alway s only b uild a ca • Light it mpfire in togethe a permit r with a ted area • Make n adult sure it is a s a fe burn, lik distance e tents, from thin bushes gs that • Pay att or trees can ention t o t h e w flying sp in d .

It can cr arks eate dan • Keep a gerous bucket o f water • After y nearby fo ou have r emerg extingu encies or dirt o is hed the ver the fl ames, s ashes an catter sa really go d check nd ne out that the fire has

Continue reading on page 18 →

TÜVtel

17

Tess and Roby

Tess tries to jump up but Roby is clinging desperately to her leg. They tumble over each other. Startled by the commotion, the owl screeches loudly from its tree. Tess crawls frantically into the shelter of the tent. Roby stumbles in behind her. “Shut the tent! Quick!” cries Tess. Roby tugs wildly at the zipper.

Zzzzipp! Made it! Inside, they cower in their sleeping bags in complete silence. Tess can feel her heart racing. Roby the little robot is trembling so badly that his steel joints are rattling.

“Go away, go away, go away,” he whispers, screwing up his eyes. Then he tugs his sleeping bag over his head with a jerk. His plan is to see nothing, hear nothing and simply wait until the spirit disappears. Tess notices a shadow creeping along the tent canvas. She watches as it stops, pauses for a moment and then grows further away again. Her heartbeat calms down. Tess takes a deep breath. “I think it is gone. Should we go home and sleep there instead?” she murmers in Roby's direction. The robot pops out from inside his sleeping bag.

“I'm not moving a single centimeter from this tent until morning,” he says, burrowing back into his sleeping bag.

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While Tess is still desperately trying to work out what just happened, she is overcome with tiredness and falls into a restless sleep.

“Meow.” Tess opens her eyes. Phew, luckily the spooky feeling has gone. She still feels exhausted though. “Meow, meow.” The sun shines on the tent, bathing the interior in a soft golden light. “Meeooooowww.” What on earth is that? Tess creeps out of her sleeping bag, opens the tent and peers out cautiously. A little cat is sitting there, watching her with big eyes. Tess pauses. Those eyes, hmmm, somehow they seem familiar to her. Suddenly she realizes.

“Roby, look! The spirit of the forest has come back.”

Roby untangles himself from his sleeping bag and peeps warily over her shoulder. The kitten blinks at him cheekily and then leaps elegantly into the bushes. Tess and Roby look at each other and grin.They swear never to tell anyone that they thought a tiny kitten was the spirit of the forest.

The end.

night Vision Some animals ca n see very well in the dark, incl owls, deer, foxe uding s and cats. They ha ve particularly la pupils that can rge detect even the tiniest spark of It lands on the re lig ht . tina, where ther e are many cells respond to light that and dark impuls es. These cells ar called rods. We e humans also ha ve rod cells in ou but we have far r eyes fewer of them.

That is why we at all well at nigh ca n‘t see t. But then we do n‘t need to. Aft we are asleep. er all, TÜVtel

19

Behind the Scenes

?

ou y e r a What e? r e h t g n i t s e T

The more of your body is touching the water slide, the slower the ride becomes.

Water slides!

Inspectors in Flip-Flops Hans Küpper is on an important mission. Today he wants to find out whether the water slide at the Aquapark in Majorca is in good shape. He doesn't have any tools with him. Instead, he has brought one of his colleagues. After all, two pairs of expert eyes see more than one.

First, the inspectors look at the construction. The base and attachments have to be stable and must not have any rusty areas. That happens fast at indoor swimming pools because the air contains high levels of moisture and chlorine that damage the steel.

Next, they check the surface of the slide, paying particular attention to the areas where the individual sections are joined together. If they are not connected properly, they have to be sealed with silicon. Otherwise people will get bruises when they slide.

Hans Küpper Tests water slides for TÜV Rheinland and also likes sliding himself.

TÜVtel

20

The water on the slide is drawn up from the swimming pool and the suction mechanisms have to be inspected as well.

If they suck too hard, a swimmer could be pulled into them.

That has already caused serious accidents in the past.

Finally, Hans Küpper also slides down himself. That way, he can test the speed and get a better idea of the danger spots.

His verdict today: Everything is in top condition.

SpeedY Sliding Champio n sliders swear b That inv y the th olves lyin ree poin g on your t techniq front of back, fo ue. your che lding yo st, cross lifting u u r a in r g m your ou s in p your b tstretch ottom. O heel sho ed legs nly your uld be to and shoulde uching t r blades less wat he slide a er. Beca n d one .

That wa use the y, you d increase resistan is s. place ce is low er, your speed

An inspector at the TÜV Rheinland laboratory tests how much a water toy can withstand.

ubbish? r r e b b u R nO way!

flatable lides on in s r te a w junk that wn are cheap speed do o m ls e a th n f a o c ts lilos, any You inland tes wever, m e o h H R . s V y Ü to T . aquatic ourself on how you it knows n injure y e o v s e , s n y a c to you d rubber g rings an ducts: swimmin quality pro r o o p fy can identi bber that the ru n ig s a e b nk, it can e toys sti th If : nk! e u s J o .

N ts ful solven rm a h s in conta ams. If ver the se o y ll fu re while er ca h yourself your fing tc n ra u c R s : t s h d Han , you mig are sharp Junk! the edges h the toy. it w g in y la you are p ark. That as a GS m h it r e th that the ck whe it means d n Eyes: Che a ty fe a sional r tested s by profes d e in m a stands fo x It is lly e heinland.

R een carefu b V s Ü a T h m y to ple fro , for exam inspectors safe!

y animal: Pool part rubber The best e a GS rings hav mark.

Every centimeter of the slide is examined from top to bottom.

TÜVtel

21

Try It Out e

Scienc

Techno

Today: S For Science

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Engi

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Mathem

stem Spells STEM is the abbreviation for Science, Technology, Engineering and Mathematics - all fields that involve exciting experiments.

atics

n o i t a z i l a u q E e r u s s e r p

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You ne ed: two ba lloons, a clip and a rolled up piece o f cardb oard.

sed e clo ther h t t he o t Pu n . on o ballo the tube f o end

1 Insert t he card board tube in to one o f the balloon s. Blow u p the other o ne and u se the clip to hold th e e n d closed.

What you expect: You would assume that the air from the inflated balloon would flow into the empty one until they were both equally full. That is the law of pressure equalization.

But nothing happens! Why? The tension in the rubber is to blame. The air is not strong enough to spread into the floppy balloon by itself. A law of nature has quite simply been outsmarted.

They know which way the wind b TÜV Rhein lows: land meteo rologists D Noerenberg orle and Kai Bo rn

land natural scientists at TÜV Rhein TÜVtel

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Undo the clip and watch wha t happens.

Chemists, physicists and biologists are responsible for the tests and experiments in the laboratories. But there are also meteorologists - or weather experts - working at TÜV Rheinland. They test things like wind power plants.

Fan Page

Q&A

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Till is a huge fan of TÜVtel and likes reading it best on his cuddly polar bear rug.

nt Do you wa to say hi to someone?

Elias reads TÜVtel in his room, all snuggled up and cosy on his bed.

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Shin went to school in Tokyo for three years before moving to Cologne.

Garden Greetings Frederike planted the summer seeds from the last TÜVtel magazine.

Now it‘s time to wait until they sprout and show their colorful flowers.

TÜVtel

23

HOW ROUND...

Because the two circles are at right angles to each other, th e corners of the square are create d automatically.

... becomes square!

You need:

Paper, scissors, glue

Explanation:

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Cut through the center of both circles one after the other.

The two circles become a square.

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TE S S And ROBY The Ice Cream Break Phew, it‘s so hot today!

You can choose: Oil ice cream with screw sprinkles or an electrified Metal Popsicle?

Tess, i‘ve got some ice cream. Would you like one, too?

YUCK!

Oh Yeah, I‘d love one!

Robot Ice cream flavors!

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TÜVtel – Who made it?

Publisher: TÜV Rheinland AG,

Corporate Communications, Am Grauen Stein, 51105 Cologne Responsible: Aud Feller, v. i. S. d. P. (responsible according to the German Press Law) Editing: S+L Partners GmbH, Cologne Printing: Druckhaus Ley + Wiegandt, Wuppertal Photos: All Roby and Tess illustrations by Franz Gerg/Comic-Agentur Roberto Freire; tombrown93/fotolia; targovcom/iStockphoto; Anna Omelchenko/123RF (cover, p. 12); Stoyan Haytov/123RF (pp. 2, 22); TÜV Rheinland (pp. 2, 7, 10, 11, 14, 20–22); © 2006, adidas AG (pp. 2, 8, 9); Ravensburger AG (pp. 2, 15); Revell (pp. 2, 5, 15) nege/fotolia (pp. 3, 12); gornostaj, Robert Kneschke/fotolia; Bidouze Stéphane/123RF (pp. 4, 5); tovovan, arturaliev, Aleksandr Bryliaev, Dirk Schumann, eyewave, vladis torms/fotolia (pp. 4, 5); Hana Schwarzova, Tagstock Japan/123RF (pp. 6, 7); Frantisek kloucek, Ahmet Ihsan Ariturk/123RF; Kaliva/shutterstock (p. 7); Tagstock Japan/123 RF (p. 8); © robocupgermanopen.de, Andreas Lander (p. 9); PLAYMOBIL (pp. 10, 11); Maksim Pasko, Benjamin Haas/123RF (pp. 10, 11); Eric Isselee, Evgeny Karandaev/123RF; panuruangjan/fotolia (p. 12); Melinda Kosztaczky/123RF (p. 13); Manfred Karisch/fotolia (p. 14); Marina Lohrbach/fotolia (pp. 15, 16); Vlastimil Å esták/123 RF (pp. 15, 24); olesiabilkei, lassedesignen/fotolia (pp. 17, 18); eyetoeyePIX/ iStockphoto (p. 20); Javier brosch/fotolia (p. 21); Susan_Stewart/iStockphoto (p. 21); Lisa Landwehrjohann (pp. 22, 24); Oliver Mohr/123RF (p. 23); private source (p. 23)

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Wednesday!

Chill Out, Big Ears!

The fennec lives in hot steppe regions and deserts. To stop itself from overheating, the little fox uses its huge ears as heat exchangers.

If it gets too warm, the blood vessels in its ears dilate and release the extra body heat into the air. Its relative, the arctic fox, has extremely small ears. That is often the case in animals that live in icy cold regions. That way, they hardly lose any heat from that part of their body. The same phenomenon can be observed in brown bears and polar bears.

Like the fennec, the African elephant also pumps warm blood into its mighty ears. It flaps them to cool down the blood, which then flows back into the body to refresh the thick-skinned animal from the inside. Asian elephants have much smaller ears. That is because they mainly live in colder forest areas and don‘t need the huge cooling systems of their African counterparts.

Photos: stev0509, javarmann, andreanita, BURDE Photography, christian-colista/fotolia; Tom Tietz/123RF; Roby and Tess illustration by Franz Gerg/Comic-Agentur Roberto Freire

Big Ears

ls l a F u ç a Igu

A Gigantic Spectacle Brazil not only hosted the 2014 World Cup: It also has many natural wonders to offer.

Thundering masses of water, fine mists and dazzling rainbows: Together, the 20 large and 255 small waterfalls in Iguaçu form the biggest waterfall in the world. It is located on the border between Brazil and Argentina. There, the water plummets up to 80 meters into the depths.

The rainforest surrounds it, offering shelter to countless animals. Everywhere there is buzzing, croaking and chirping. Luminous butterflies float through the air and tiny hummingbirds sip sweet nectar from colorful flowers. A jaguar slinks silently through the undergrowth.

Excited monkeys can be heard screaming in the distance, interspersed with the screeches of a hyacinth macaw. Once you‘ve been to the Iguaçu Falls, you never forget the gigantic spectacle of nature.

Photos: RedTC, Gino Santa Maria, nstanev, tsoergel, Palenque, Corbis/fotolia; leksele/123RF; leugenio/ iStockphoto; Roby and Tess illustration by Franz Gerg/Comic-Agentur Roberto Freire