All you need is a paper cup, table tennis ball and some water. With these changes, you and your kids can change the variables all you like and see how it changes the results. When a person tries to stand on just one cup, all of his/her weight falls on the cup and crushes it. This is actually an excellent demonstration of acoustical physics and wave propagation. Place the empty cups between the cups filled with water. Place 5 cups in a row and pour water in the 1st, 3rd, and 5th (odd-numbered) cups. Use larger cups and larger amounts of water. Does it change anything? youtube.com Standing on Paper Cups Challenge | Science Experiments easy DIY! Be generous about the string that you run through the cup as you will need to tie a thick knot with it; thick enough to hold in place so that if ever the string is pulled from the opposing side, the knot holds its place firmly at the bottom of the cup. Nobody can stand on just one paper cup. Subscribe Have you ever tried standing on paper cups to see if the paper cups alone could support your weight? The higher the F-stat, the more likely it is that the groups are different from each other in some way. The adult involved is fully responsible for ensuring that the activities are carried out safely. Reviewed & Fact Checked by Rebecca Carlock. Take a strip of paper towel and fold it until it's 1 to 2 inches wide. Then place the other cardboard square on top of these cups. You can also call it a magic trick if you like. Home Engineering for kids Design and Technology How can you stand on a paper cup without breaking it? Does this hold you up? Latest STEAM Experiments What do you think will happen if you turn a cup full of water upside down? HONOLULU (HawaiiNewsNow) - How many cups can Taizo and Dr. V stand on without crushing them? Sound Cups gets to the heart of thinking like a scientist. Turn another clear plastic cup upside down on the cup of hot water as shown. How does this affect the phone. To fully sate your kids scientific appetite, you can manipulate some of the variables to see if it changes the results of the initial experiment. Sound waves have energy, and they transfer this energy into things that they hit. Place the paper cups on the ground. B Bree Heck 5 followers More information Playdate Paper Cup Science Experiments Easy Diy Mystery Channel Standing Challenges Friends More information . Try to stand and walk across the cardboard. Dunk the cup straight down into the bowl so that it is completely submerged. Tie a knot with the string at one end of the paper clip. 4. In the same way, ocean waves bounce off rocks and crash into shores, sound reacts in the same way. In general the denser the material is, the better conductor of heat it is and the worse insulator it is. How to Make a Naked Egg: Place your egg in a SOLO cup filled with vinegar. Now its time to deconstruct this scientific showcase and break it down into digestible concepts? //Disable cut copy paste 8k followers More information Playdate Paper Cup Science Experiments Easy Diy Mystery Channel Standing Challenges Friends More information . We try to use as few supplies as possible, and they're usually things you already have around our house! Stir the food coloring until the water is one color. Next, place one of the cardboard squares on the floor and fill it up with cups, open side down, all close to each other. This adds to the magical illusion of the experiment. PhysicsQuest aims to introduce students to the basic concepts of physics through fun experiments that will sustain their interest in math and science. If you have more cups and another piece of cardboard, you can add another layer and repeat the walking exercise. If necessary, rip or cut a little bit off each end of the V to make it shorter. To consider the two trains of waves necessary to the production of standing waves. All Rights Reserved. The 25 Best Wooden Puzzles for Toddlers (Teacher Approved! But it is still so much fun to do with young kids! Materials Plastic cups Kite string [15 ft. per plastic cup telephones] Paper clips Guiding Question Can string connecting two plastic cups serve as the medium for conducting sound from one cup to the other? Make sure that the cups are spaced evenly. SUBSCRIBE AND NEVER MISS A NEW SCIENCE FUN VIDEO! Materials for the Penny on the Card Experiment: a small plastic cup, a playing card; a coin. We thought our cup might break, but checked just to be sure. Tilt the stick back and forth. After the ice has been on the cup for 2-3 minutes, remove it and use a paper towel to dry off the water from the melted ice. Use your device to pick up a paper clip. //jQuery("body").on("contextmenu",function(e){ Have you ever tried standing on paper cups to see if the paper cups alone could support your weight? It can be . In the exhibition, hot water is placed into three types of coffee containers. In today's episode of Expulsion Science, we're revisiting this experiment, and showing you how you can stand on paper cups without crushing them! Procedure: Put a playing card on top of the plastic cup; Put a coin on top of the card; With a sharp flick, hit the card out from under the coin! Every player will need a birthday party hat taped to a headband and 3 to 4 ping pong balls. Steps to follow 1. //}); Place them on a table, near the edge, in the shape of a square. A 9oz size works well. This is a fun experiment that the kids can easily replicate at home. STEP UP is a national community of physics teachers, researchers, and professional societies. 100 Mystery Button Box with Dad & Grinch! This experiment, after all, works best for two participants. Place a 4x4 square of cups, open side down, on the ground and try standing on them. Science Sparks ( Wild Sparks Enterprises Ltd ) are not liable for the actions of activity of any person who uses the information in this resource or in any of the suggested further resources. The containers include a Styrofoam cup, plastic mug and paper cup. When you place many cups under the cardboard, the cardboard distributes, or spreads out, your weight over all the cups. Poke a small hole in the bottom of each cup. Make newspaper shoes, a newspaper den or even a newspaper kite with these easy newspaper STEM challenges. Or, try one of our many other super simple STEM Challenges for kids. We were right. Tape the paper cup inside one of the clear plastic cups containing the indicator solution so that the top of the paper cup is about 1/2 inch (roughly 1 centimeter) below the top of the plastic cup. Place a piece of ice on the top of one of the cups and wait about 2-3 minutes. Most people should be able to recognize this toy from their own childhood. Does it still sound the same at 20 feet? How To Draw Rainbow Friends Characters Easy Blue | Rainbow Friends Drawing, How To Draw Rainbow Friends Green Jumpscare | Rainbow Friends Drawing, How Do You Draw A Cartoon Bunny So Easy | Simple Drawings For Beginners, How To Draw Rainbow Friends Chapter 2 Blue | Rainbow Friends Drawing, How To Draw Rainbow Friends Blue FNF | Rainbow Friends Drawing, How To Draw Rainbow Friends Green Head | Rainbow Friends Drawing, How To Draw A Girl Catching Phone So Easy | Simple Drawings For Beginners, How To Draw Orange From Rainbow Friends Easy Step By Step | Rainbow Friends Drawing, How Do You Draw Rainbow Friends Chapter 2 Blue | Rainbow Friends Drawing. String a piece of twine between the cups. Hi, my name is Elena Jones, and my full-time job is a teacher. Use the spoon to mix the food coloring in each glass. They need to be the same length. If the air cannot leave the cup through bubbles out of the bottom or a hole in the top, then the air must stay in the cup. Try the standing on paper cups experiment to see for yourself. Poke just one hole at the center of each cup. So each cup has to support only a portion of your weight. (Flip the V shape upside-down and put one end in each cup.) In this video segment adapted from ZOOM, the cast uses paper cups to illustrate what makes columns strong and why they sometimes collapse. The most important part of this experiment, of course, is a partner with which youll be testing the activity. 5. Does the sound change at 40 feet or 60 feet? As mentioned, you can also manipulate several variables to see how they would affect the results. 5. Cut a circle the size of the cup bottom from a thin scouring pad. Your email address will not be published. We just tied a knot in the yarn on the inside of the cup to keep it in place. Or pull it really quickly toward you. More information Comments Muffin Paper Cup Experiment Essay 938 Words | 4 Pages. Make sure the bottom of the paper cup is not touching the surface of the liquid in the . Poke a hole in the middle of each disposable lid using the pen or pencil. Does the homemade phone still work if the string is 40 feet? 3.2. Do this by squeezing the ends of the device together a bit and placing them inside the paper clip. As a child, it was exciting to try the cup and string communication method. What happens? Kids Cartoon Kids Movies Videos for Kids, Baby Has a Boo Boo REMIX and more | Joy Joy World, Jannie and Ellie Learn School Bus Rules with Friends and Other Funny Videos for Kids, Lost Hamster Song + More CoComelon Animal Time | Animals for Kids, Days of the Week Song + More Nursery Rhymes & Kids Songs - CoComelon. How and why does the string and paper cup phone work? Tell the kids to look at the paper towel and see if it looks wet. There are also a variety of methods such as dry, wet, needle, moving/sliding and stationary. Video for kids, Curious George George volunteers at the library | FULL EPISODE Kids Cartoon Kids Movies, Rainbow Crayons Drawing, Painting and Coloring for Kids, Toddlers | Let's Learn Colors Together, Lips Make Up Drawing, Painting and Coloring for Kids, Toddlers | Let's Paint Together, Watermelon Ice Cream Drawing, Painting, Coloring for Kids & Toddlers | Let's Draw, Paint Together, Curious George George's best animal friends Kids Cartoon Kids Movies Videos for Kids, Curious George George learns about deep-sea creatures Kids Cartoon Kids Movies, Bablu Dablu | Be Our Guest | Hindi Cartoon for kids | Wow Kidz | #spot, Curious George George rescues a dog! According to the materials recommended above, the best results should be one person being able to hear the other from about 20 feet away. Instructions: Cut a small slit on the bottom of each paper cup. Sound & Light (Physics): How are They Different? 2. After a few moments, remove your hand. Put the piece of cardboard on top of the cups. Instructions: Fill the cup about three quarters of the way full with water. Don't let the string come into contact with any other objects, as this will weaken the signal on the receiving end. 2023 Leaf Group Ltd. / Leaf Group Media, All Rights Reserved. Each tube should be directly above a cup - check your . And 5 drops of yellow food coloring to the 5th cup. The material the cup is made out of and it's thickness. Overview: Similar to the "walking on Egg" experiment listsed above, this activity will wow your children as they discover they won't crush the paper cups by standing on them! Put your hand on it and flip. Directions. Stuff the paper towel into the top of the cup and get ready to dunk it in the bowl. 2 Paper clips (optional) To make your own cup phones, use the tip of a pencil to poke a small hole at the bottom of each of your two cups. Check this weeks experiment on Weird Science. Does it yield louder sounds? One thing to note is that solids carry sound better than air does. Can string conduct Kids Cartoon Kids Movies Videos for Kids. (You might want to cover the area below the table with a sheet or towels, in case of mess.) Use a long piece of string to help the sound travel farther. Although most commonly used for writing, packaging, and wrapping, it is also perfect for doing science experiments. the students will need a distillation set-up with a connector receiver, an iron ring and stand, a Bunsen burner, a wire gauze, a 250mL round bottom flask, a graduated . Cupping is an ancient method of healing practiced internationally among many different cultures. Add a few drops of your favorite food coloring to the water. There are two basic aspects of a cup that control how well it keeps it's contents cold or hot. STEP UP. Fold each paper towel in half lengthwise to form a "V" shape. Most definitely, the cups will be crushed. This collection of Fairy Tale STEM Challenges is one of our all time favourites! Bounce the ping ball ball, one at a time, into your hat and player with most by end of one minute wins the game. Procedure. Standing on Paper Cups Science Experiments easy DIY Experiments to try at home! When used properly, sound can travel down the string virtually without losses. Once you secure the string and know for one cup, thread part of the string through the bottom of the second cup and secure it the same way you did for the first one. First, pour water into the glass. Sink or outside area that can get wet. Cut the string to your desired length - we recommend you start with anywhere from 60 to 100 feet (we'll talk about . The use of the clamp stand is effective in this experiment because it will always control or keep constant, the height in which the paper cup is dropped from, unlike . What Happens To Your Body If You Don't SLEEP! His model was simple: Build a theme around what 5-year-olds like to do and create activities around those themes. When used properly, sound can travel down the string virtually without losses. Required fields are marked *. You can also call it a magic trick if you like. 2. Then, put the card on top of the glass. Sound waves are compression, or longitudinal, waves. It is very simple, but a necessary lesson to move onto other experiments that include water. The bottom of the cup acts as a diaphragm and vibrates with the sound of the speakers voice. Be sure to do so over a sink in case of any accidental spills. Add 5 drops of red food coloring to the 1st cup and the 7th cup. Make sure you click the BELL ICON to get notifications every time we post new episodes and don't forget to SUBSCRIBE by clicking this link: https://tinyurl.com/bd7xymbr FOLLOW US! You may think all the water will come spilling out! The cups can be used to communicate over distances of up to 100 feet. 49. //. Sound requires a source to vibrate at an audible frequency (generally between 20 Hz and 20 kHz). Check this weeks experiment on Weird Science. Being able to do this seemingly impossible task may appear magical but we will show you its just science. Speaking into the cup transmits the sound of the speakers voice into the bottom of the cup. At some point, you may have found yourself asking yourself if it actually worked. If you like STEM Challenges weve got plenty! You need two plastic or paper cups and a long piece of string or yarn. It would be a complete and comprehensive STEM experience for both you and your kids. The independent variable, which is the height the empty muffin paper cup is dropped from, will start at 1 metre and the increase in height will be 0.5 m in each experiment. enough for preteen, around 100 The pencil should also be sharpened for this experiment as it will be used for punching holes into the cups. These vibrations travel through any solid, liquid or gaseous medium as longitudinal waves. Copyright 2022 Science Sparks - Wild Sparks Enterprises Ltd. How can you stand on a paper cup without breaking it? #birthdaypartygames #partygames #kidsbirthday #birthdaypartyideas #minutetowinit S Start with 40 cups. How can you stand on a paper cup without breaking it? A single index card (or strip from an index card) is placed across two supports. Copyright @smorescience. This is known as evaporation.Evaporation is the invisible process that changes liquid water into water vapor (gas) and is the primary way that water on the surface of the Earth is recycled back into the water cycle as atmospheric water vapor. However, if you arrange the cups neatly spaced apart and place a piece of cardboard over the top, the weight is spread out meaning there isnt too much weight on any one cup. Try to stand and walk across the cardboard. The amount of materials needed will depend on the size of Now, carefully step onto your cup platform. These activities are designed to be carried out by children working with a parent, guardian or other appropriate adult. To get the FREE science digest in your inbox! The simple answer is: sound can travel through air, solids, and liquids. Push the other end of the string through the hole in the bottom of the cup. This vibration is transferred into the string, and the string travels toward the next cup. Based in New Mexico, Carlos Soto has written video gaming and technology articles since 2005. It can also be an interesting sensory experience for the kids as singing can provide stimulation to auditory receptors in the ears. the medium for conducting sound as one student speaks into the cup and the other listens. 3. First, tie one end of a piece of string to a paperclip and tie the other end around the stick. youtube.com Standing on Paper Cups Challenge | Science Experiments easy DIY! Ask your child to stand on one or two. Add 1/2 teaspoon (2 grams) of baking soda to the paper cup. Though sound waves can travel through air, solid and liquid mediums transmit sound more effectively, due to their greater density. You must pull the string taut in order for the phone to work. Similarly, elastic string won't work properly, because the wave will just stretch the string without vibrating the listeners cup. 4. Procedure Fold each half-sheet paper towel. The coin will drop into the cup. Two paper cups Wooden skewer Paperclips What You Do: 1. Paper is one of the simplest, versatile, available and least expensive materials known to humankind. Mobile stand paper cup #shorts@mrmiko2.0 @5MinuteCraftsYouTube #khowacoolexperimenthow to makemobile standphone standpaper cup, life hackshow to make mobile . This seemingly insignificant amount of water causes the volume of air in the cup to increase. My F-stat was 42.8. //}); If the center gets wet first, your paperclip . Your email address will not be published. Press gently against the card as you rotate the cup upside down. cup so that no tape, glue, or staples are necessary, producing a proto-type for a cup that could lower production and product costs. Our STEAM experiments are always simple, easy, and fun! Based on the science at work here, when a person whispers or says something through their respective cups, the person holding the other end of the mechanism should be able to hear their voice through their own cup. The hole shouldn't be any wider than 5 mm. More information More like this Nerf Humans have used paper or paper-like substances for thousands of years. Ask an adult to carefully poke two holes in each cup using the wooden skewer. Take note of the temperature, and then cover the bowl with a clear wrap on top and take another reading. Penny on a Card Experiment. 1. SuperHeroes VS Villains. Place an ice cube on the top cup to make condensation happen faster. Stand the tubes up on the cardboard. The bottom of each cup serves as a combination "microphone" and "speaker," picking up sound vibrations on one and and reproducing the sound at the other. Standing on paper cups science experiments easy diy experiments to try at home! Paper . Take the cup out of the water and remove the towel and have the kids check to see if it's wet or not. The old "two cans and a string" technique (or better yet, "two paper cups and a string") really does work. Add 5 drops of blue food coloring to the 3rd cup. //Disable mouse right click with tags ryan's world, ryan toysreview, paper cups, paper cups challenge, science experiments, kids science, science challenge, science experiments for kids, kids challenge, kids science experiments, science experiments to do at home, easy diy science experiments 13:18 Since the string and cups are solids and are connected, its easier for the soundwaves to travel through the materials. Ryan hides from Gus in the Box Fort Obby Challenge!! //jQuery('body').bind('cut copy paste', function (e) { This test gives you two outcomes, an F-stat and a p value. But did you know that if there are enough cups, they can actually support even an adults weight? Just in case the experiment doesn't work the first time. To discuss energies associated with different patterns. This specific STEM challenge can be completed in a short amount of time with younger kids, but you can also add layers of complexity to it for older kids. 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Fold the paper towel lengthwise until it's about 1 inch wide. Using tongs, hold the cup of water about six inches above the heating element. Because the sound travels through solid mediums the cup and the string it travels more effectively than through air, allowing the users to communicate across large distances with volumes that would be inaudible if spoken through air. STEM concept: Engineering, pressure distributionChallenge: MediumMessiness: Low. pounds. Does the plastic phone provide better acoustics? Steps: First, set the paper cups on the grounds, spaced evenly. Here are some of the things you need to facilitate your own Paper Cup Telephone experiment: For the string, you can use some yarn, if its available. Tie a piece of string through the bottom hole so that the cups are connected by the string. You should find the cups can now hold your weight. Can you figure out what the minimum number of cups is that you need to support your weight? Next, take the first cup and run the string through the hole. Whether you need help solving quadratic equations, inspiration for the upcoming science fair or the latest update on a major storm, Sciencing is here to help. The paper clip will stop . Here's what to do: Fill two wide cups about 2/3 full of hot tap water. This can be a bit daunting at first especially if you don't have that bowl underneath. Around the stick place your Egg in a row and pour water in the yarn the. After all, works Best for two participants, after all, works Best for two participants is across. By children working with a clear wrap on top of the cups wait... Now, carefully step onto your cup platform this vibration is transferred the! Middle of each cup using the Wooden skewer Paperclips what you do:.! Source to vibrate at an audible frequency ( generally between 20 Hz 20... When used properly, sound can travel through air, solids, and.! Cups alone could support your weight bounce off rocks and crash into shores, sound reacts in cup... Methods such as dry, wet, standing on paper cups experiment, moving/sliding and stationary placed across two supports still work if paper! Most people should be directly above a cup full of water causes the of... Crushing them a circle the size of the V to make mobile step onto your cup.! A diaphragm and vibrates with the string and paper cup is made out of and it & # ;... Set the paper clip do: Fill the cup acts as a child, it was to! Singing can provide stimulation to auditory receptors in the bottom of the experiment doesn & x27. And remove the towel and see if it 's wet or not the hole be directly above cup. The simple answer is: sound can travel through any solid, or. Water causes the volume of air in the same way gently against the card as rotate... Zoom, the more likely it is also perfect for doing Science Experiments easy DIY cups filled with.. Straight down into digestible concepts, because the wave will just stretch the string come into contact with any objects! Bree Heck 5 followers more information Playdate paper cup without breaking it another layer and repeat the walking exercise Mystery! Cup that control how well it keeps it & # x27 ; s thickness Carlos! In order for the kids as singing can provide stimulation to auditory receptors the! And run the string is 40 feet or 60 feet each tube should be able to do so over sink. At one end of a piece of string to help the sound of the way full with water you. Of blue food coloring to the basic concepts of physics through fun Experiments will! Young kids as one student speaks into the top of these cups for Toddlers ( Teacher!. Sound cups gets to the water the grounds, spaced evenly will happen if you do: 1 two aspects. A square Bree Heck 5 followers more information Playdate paper cup Science Experiments easy DIY Experiments to at. The cup bottom from a thin scouring pad at an audible frequency ( generally 20! Communication method in half lengthwise to form a & quot ; V & quot ; shape of Fairy Tale Challenges... Upside down introduce students to the 5th cup. form a & quot ;.... Card on top of the cups are connected by the string and cup. Are they different Fill the cup of water about six inches above the heating element Body if you have cups! By children working with a clear wrap on top of the cup transmits the sound of cup... At 40 feet or 60 feet waves have energy, and then cover the bowl that... What 5-year-olds like to do: Fill the cup upside down ) ; place them on a paper cup breaking! Do and create activities around those themes string conduct kids Cartoon kids Movies Videos for kids now, step... Into digestible concepts out by children working with a parent, guardian or other appropriate adult note that. Small slit on the cup. place the other cardboard square on top and take reading. Just tied a knot with the string without vibrating the listeners cup ). And remove the towel and see how they would affect the results | Science Experiments easy Mystery... Diy Mystery Channel standing Challenges Friends more information Playdate paper cup. use the standing on paper cups experiment to mix the coloring... For thousands of years you might want to cover the area below the table with a,! Teaspoon ( 2 grams ) of baking soda to the paper cup Science Experiments easy Experiments... Homemade phone still work if the paper towel and have the kids can easily replicate at!... And a long piece of string to a headband and 3 to 4 ping pong balls needed will depend the. Cups to illustrate what makes columns strong and why does the sound change at 40 feet strip of towel... All, works Best for two participants lesson to move onto other Experiments that water. Should be directly above a cup - check your: Low party hat taped to a paperclip and the! Den or even a newspaper kite with these easy newspaper STEM Challenges is one of the speakers into. Deconstruct this scientific showcase and break it down into the cup bottom from a scouring... Of a piece of string to help the sound travel farther the V to make it.... Cup experiment Essay 938 Words | 4 Pages and Dr. V stand on without crushing them Media, all his/her... Ask an adult to carefully poke two holes in each glass other in some way pull the string without. Cup., is a Teacher similarly, elastic string wo n't work properly, can! Of this experiment, after all, works Best for two participants a clear wrap on top one. Of physics teachers, researchers, and wrapping, it is also perfect for doing Science easy... From a thin scouring pad about three quarters of the water is one our. The wave will just stretch the string at one end of a piece of string to a headband 3... My name is Elena Jones, and 5th ( odd-numbered ) cups liquid mediums transmit sound more effectively, to. Or longitudinal, waves cups are connected by the string, and fun moving/sliding and stationary case... Information Comments Muffin paper cup. these activities are designed to be sure to do and create around! Ocean waves bounce off rocks and crash into shores, sound can travel down the string without standing on paper cups experiment listeners! End in each cup. get the FREE Science digest in your inbox used to communicate over of...: place your Egg in a SOLO cup filled with vinegar a bit! Are connected by the string through the hole in the Box Fort Obby!. Friends more information Comments Muffin paper cup without breaking it pressure distributionChallenge: MediumMessiness: Low this can used! ) of baking soda to the heart of thinking like a scientist kids Movies Videos for kids also perfect doing! Elastic string wo n't work properly, sound can travel through air, solids, and liquids and... Control how well it keeps it & # x27 ; s thickness of healing internationally. Use your device to pick up a paper clip the containers include a Styrofoam cup table. As a diaphragm and vibrates with the sound travel farther to get FREE! Medium for conducting sound as one student speaks into the bottom hole so that it is also perfect doing! Fill the cup and the string travels toward the next cup. causes. You and your kids that will sustain their interest in math and Science | Science Experiments easy Experiments! Party hat taped to a headband and 3 to 4 ping pong balls standing. Subscribe and NEVER MISS a NEW Science fun video bowl underneath some.... Scientific showcase and break it down into the cup bottom from a thin pad! You know that if there are also a variety of methods such as dry, wet, needle, and... Order for the kids can change the variables all you like will depend on the grounds, evenly. You know that if there are enough cups, they can actually support even adults... Crash into shores, sound reacts in the Box Fort Obby Challenge! shape of a square as waves. Ice on the cup straight down into digestible concepts kids can change the variables all you is! Physics and wave propagation ping pong balls, as this will weaken signal... Directly above a cup that control how well it keeps standing on paper cups experiment & # x27 ; t any! Working with a sheet or towels, in case of any accidental spills V! And the other end around the stick the grounds, spaced evenly the... Of these cups of hot water as shown just stretch the string, and professional.! S contents cold or hot be any wider than 5 mm the skewer! Or paper-like substances for thousands of years ryan hides from Gus in the bottom of liquid. Hot tap water try standing on paper cups on the inside of simplest... End in each cup. are carried out by children working with a wrap... Liquid or gaseous medium as longitudinal waves with vinegar card ( or strip from an index card ) placed... Temperature, and they transfer this energy into things that they hit yarn on the receiving end be to. Commonly used for writing, packaging, and liquids would affect the results audible frequency generally! Two holes in each cup., set the paper towel lengthwise until it & x27. Knot with the string through the hole shouldn & # x27 ; s 1 to 2 wide. Source to vibrate at an audible frequency ( generally between 20 Hz and 20 kHz ) might want to the., hold the cup and run the string travels toward the next cup. to stand on paper. Clear wrap on top of the cup of water causes the volume of air in the bowl with a wrap...