{"id":51776,"date":"2026-03-04T04:08:52","date_gmt":"2026-03-03T19:08:52","guid":{"rendered":"https:\/\/phys-edu.net\/wp\/?p=51776"},"modified":"2026-03-04T04:45:48","modified_gmt":"2026-03-03T19:45:48","slug":"the-science-show-sensation-find-the-best-recipe-for-elephants-toothpaste-%f0%9f%90%98","status":"publish","type":"post","link":"https:\/\/phys-edu.net\/wp\/?p=51776&lang=en","title":{"rendered":"A Science Show Smash Hit! Find the Perfect Formula for Elephant Toothpaste!"},"content":{"rendered":"<p style=\"text-align: center;\"><span style=\"color: #339966;\"><strong>Hi, I&#8217;m Ken Kuwako, your Science Trainer. Every day is an experiment!<\/strong><\/span><\/p>\n<p style=\"text-align: center;\" data-pm-slice=\"1 1 []\">\u3010<a href=\"https:\/\/music.youtube.com\/watch?v=0VDHYC6qtPw&amp;si=Ozb9x6ZyZ73l_Z4O\">This article is also available on my radio show!<\/a>\u3011<\/p>\n<p data-pm-slice=\"1 1 []\">Have you ever heard of the experiment called Elephant\u2019s Toothpaste? Once the reaction starts, a massive, fluffy fountain of foam bursts out, looking just like a giant tube of toothpaste being squeezed! It\u2019s a high-impact experiment that\u2019s a huge hit in science classrooms and live shows. Recently, I teamed up with my students to give it a try. Check out the video below to see the explosive results!<\/p>\n<p><iframe loading=\"lazy\" title=\"\u6700\u9069\u306a\u8c61\u306e\u6b6f\u78e8\u304d\u7c89\u306e\u5206\u91cf\u3092\u63a2\u308b\uff01\uff08\u904e\u9178\u5316\u6c34\u7d20\u6c34\uff0b\u30e8\u30a6\u5316\u30ab\u30ea\u30a6\u30e0\uff09\" width=\"1140\" height=\"641\" src=\"https:\/\/www.youtube.com\/embed\/NL2y1SM3TJo?feature=oembed\" frameborder=\"0\" allow=\"accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture; web-share\" referrerpolicy=\"strict-origin-when-cross-origin\" allowfullscreen><\/iframe><\/p>\n<p>To pull off a successful science show, I spent some time figuring out the perfect &#8220;recipe&#8221;\u2014one that produces maximum foam while staying safe. Hydrogen peroxide is constantly breaking down into oxygen and water, which is why we keep it in the fridge. However, without a little help, this reaction is incredibly slow. By adding potassium iodide to the hydrogen peroxide, we trigger a rapid release of oxygen, creating a mountain of bubbles in an instant. The potassium iodide acts as a catalyst, kickstarting the decomposition process all at once.<\/p>\n<p><span style=\"font-size: 14px;\">Here is the chemical equation for the reaction:<\/span><\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone wp-image-61107 aligncenter\" src=\"https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2024\/12\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2026-03-04-4.40.40.jpeg\" alt=\"\" width=\"534\" height=\"146\" srcset=\"https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2024\/12\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2026-03-04-4.40.40.jpeg 782w, https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2024\/12\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2026-03-04-4.40.40-300x82.jpeg 300w, https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2024\/12\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2026-03-04-4.40.40-768x210.jpeg 768w\" sizes=\"auto, (max-width: 534px) 100vw, 534px\" \/><\/p>\n<p style=\"text-align: right;\"><a href=\"https:\/\/ja.wikipedia.org\/wiki\/%E8%B1%A1%E3%81%AE%E6%AD%AF%E7%A3%A8%E3%81%8D\">Source: Wikipedia<\/a><\/p>\n<p><span style=\"font-size: 14px;\">The size and intensity of the foam depend on the concentration and amount of hydrogen peroxide used. Higher concentrations lead to faster, more dramatic reactions. However, if the reaction is too violent, it can be hard to control\u2014finding that perfect balance is the tricky part! We always conduct these tests with safety as our top priority. It&#8217;s also worth noting that this is an exothermic reaction; if you touch the flask or the foam afterward, you\u2019ll feel a distinct warmth. Beyond the visual spectacle, it\u2019s a fantastic way to learn about reaction heat and catalysts.<\/span><\/p>\n<h2>Experimental Methods<\/h2>\n<p>I tested three different variations to see how the results changed.<\/p>\n<h3>1. 50mL Hydrogen Peroxide + 3 tbsp Potassium Iodide (dissolved in 50mL warm water)<\/h3>\n<p>First, I poured 50mL of hydrogen peroxide into a 500mL Erlenmeyer flask, adding a dash of dish soap and some food coloring for effect. I placed the flask inside a plastic bin and then added the potassium iodide solution (3 tablespoons dissolved in water).<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone wp-image-44153 aligncenter\" src=\"https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2023\/12\/facf084c17bc958974891c0fc16c1487.jpg\" alt=\"\" width=\"270\" height=\"306\" srcset=\"https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2023\/12\/facf084c17bc958974891c0fc16c1487.jpg 1026w, https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2023\/12\/facf084c17bc958974891c0fc16c1487-265x300.jpg 265w, https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2023\/12\/facf084c17bc958974891c0fc16c1487-906x1024.jpg 906w, https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2023\/12\/facf084c17bc958974891c0fc16c1487-768x868.jpg 768w\" sizes=\"auto, (max-width: 270px) 100vw, 270px\" \/><\/p>\n<p>The moment the potassium iodide hits the liquid, oxygen is released so rapidly that the dish soap captures it into a massive structure of bubbles.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone wp-image-44152 aligncenter\" src=\"https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2023\/12\/9e0ecb64567647dbd26d90e20d239b29.jpg\" alt=\"\" width=\"561\" height=\"558\" srcset=\"https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2023\/12\/9e0ecb64567647dbd26d90e20d239b29.jpg 1140w, https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2023\/12\/9e0ecb64567647dbd26d90e20d239b29-300x298.jpg 300w, https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2023\/12\/9e0ecb64567647dbd26d90e20d239b29-1024x1019.jpg 1024w, https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2023\/12\/9e0ecb64567647dbd26d90e20d239b29-150x150.jpg 150w, https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2023\/12\/9e0ecb64567647dbd26d90e20d239b29-768x764.jpg 768w\" sizes=\"auto, (max-width: 561px) 100vw, 561px\" \/><\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone wp-image-44154 aligncenter\" src=\"https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2023\/12\/4c585d1d8c85998f14212be7b4162e47.jpg\" alt=\"\" width=\"563\" height=\"483\" srcset=\"https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2023\/12\/4c585d1d8c85998f14212be7b4162e47.jpg 1632w, https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2023\/12\/4c585d1d8c85998f14212be7b4162e47-300x257.jpg 300w, https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2023\/12\/4c585d1d8c85998f14212be7b4162e47-1024x878.jpg 1024w, https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2023\/12\/4c585d1d8c85998f14212be7b4162e47-768x659.jpg 768w, https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2023\/12\/4c585d1d8c85998f14212be7b4162e47-1536x1318.jpg 1536w\" sizes=\"auto, (max-width: 563px) 100vw, 563px\" \/><\/p>\n<p>With 50mL, the foam filled up the bin nicely. The final volume of foam is directly tied to how much hydrogen peroxide you start with.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone wp-image-44155 aligncenter\" src=\"https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2023\/12\/8a049494fce6f182648777dcc002ef97.jpg\" alt=\"\" width=\"562\" height=\"523\" srcset=\"https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2023\/12\/8a049494fce6f182648777dcc002ef97.jpg 1392w, https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2023\/12\/8a049494fce6f182648777dcc002ef97-300x279.jpg 300w, https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2023\/12\/8a049494fce6f182648777dcc002ef97-1024x952.jpg 1024w, https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2023\/12\/8a049494fce6f182648777dcc002ef97-768x714.jpg 768w\" sizes=\"auto, (max-width: 562px) 100vw, 562px\" \/><\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone wp-image-44156 aligncenter\" src=\"https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2023\/12\/890aaa9f33beeaeb94c78c31a119fae8.jpg\" alt=\"\" width=\"565\" height=\"503\" srcset=\"https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2023\/12\/890aaa9f33beeaeb94c78c31a119fae8.jpg 1472w, https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2023\/12\/890aaa9f33beeaeb94c78c31a119fae8-300x267.jpg 300w, https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2023\/12\/890aaa9f33beeaeb94c78c31a119fae8-1024x913.jpg 1024w, https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2023\/12\/890aaa9f33beeaeb94c78c31a119fae8-768x685.jpg 768w\" sizes=\"auto, (max-width: 565px) 100vw, 565px\" \/><\/p>\n<h3>Reference: Using Solid Potassium Iodide<\/h3>\n<p>When I added the potassium iodide as a solid powder instead of a solution, the reaction looked more like &#8220;snake fireworks.&#8221; It was much slower, allowing us to observe a long, steady crawl of foam.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone wp-image-44157 aligncenter\" src=\"https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2023\/12\/81685358441a535cfd4054889629fbb6.jpg\" alt=\"\" width=\"576\" height=\"491\" srcset=\"https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2023\/12\/81685358441a535cfd4054889629fbb6.jpg 1278w, https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2023\/12\/81685358441a535cfd4054889629fbb6-300x255.jpg 300w, https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2023\/12\/81685358441a535cfd4054889629fbb6-1024x872.jpg 1024w, https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2023\/12\/81685358441a535cfd4054889629fbb6-768x654.jpg 768w\" sizes=\"auto, (max-width: 576px) 100vw, 576px\" \/><\/p>\n<p>A word of caution: if you do this without dish soap, the reaction is violent and the solution can splash everywhere. I also tried a mini-version using just 5mL of hydrogen peroxide in a graduated cylinder. After the reaction, I lowered a glowing wooden splint into the cylinder, and it burst back into flames\u2014proving that the gas being produced was indeed pure oxygen!<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone wp-image-44158 aligncenter\" src=\"https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2023\/12\/f259bb5ad00c6793071432684ce839e8.jpg\" alt=\"\" width=\"321\" height=\"319\" srcset=\"https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2023\/12\/f259bb5ad00c6793071432684ce839e8.jpg 710w, https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2023\/12\/f259bb5ad00c6793071432684ce839e8-300x298.jpg 300w, https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2023\/12\/f259bb5ad00c6793071432684ce839e8-150x150.jpg 150w\" sizes=\"auto, (max-width: 321px) 100vw, 321px\" \/><\/p>\n<h3>2. 200mL Hydrogen Peroxide + 6 tbsp Potassium Iodide (dissolved in 50mL warm water)<\/h3>\n<p>Next, I scaled things up. 200mL of hydrogen peroxide paired with a solution of 6 tablespoons of potassium iodide. Here is what happened:<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone wp-image-48003 aligncenter\" src=\"https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2024\/12\/5fab9f07bb5246e6d113b5a17855967d.jpg\" alt=\"\" width=\"214\" height=\"319\" srcset=\"https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2024\/12\/5fab9f07bb5246e6d113b5a17855967d.jpg 848w, https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2024\/12\/5fab9f07bb5246e6d113b5a17855967d-202x300.jpg 202w, https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2024\/12\/5fab9f07bb5246e6d113b5a17855967d-688x1024.jpg 688w, https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2024\/12\/5fab9f07bb5246e6d113b5a17855967d-768x1143.jpg 768w\" sizes=\"auto, (max-width: 214px) 100vw, 214px\" \/><\/p>\n<p style=\"text-align: center;\">200mL Hydrogen Peroxide<\/p>\n<p><iframe loading=\"lazy\" title=\"\u30b5\u30a4\u30a8\u30f3\u30b9\u30b7\u30e7\u30fc\u3067\u5927\u4eba\u6c17\uff01\u8c61\u306e\u6b6f\u78e8\u304d\u7c89\u306e\u6700\u9069\u306a\u914d\u5408\u3092\u63a2\u305b\ud83d\udc18\uff01\" width=\"1140\" height=\"641\" src=\"https:\/\/www.youtube.com\/embed\/2KEAwFn46p0?feature=oembed\" frameborder=\"0\" allow=\"accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture; web-share\" referrerpolicy=\"strict-origin-when-cross-origin\" allowfullscreen><\/iframe><\/p>\n<p>The foam overflowed and covered the entire desk!<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone wp-image-48086 aligncenter\" src=\"https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2024\/12\/40f587453684174baf6f0779e5f3a044.jpg\" alt=\"\" width=\"350\" height=\"240\" srcset=\"https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2024\/12\/40f587453684174baf6f0779e5f3a044.jpg 1760w, https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2024\/12\/40f587453684174baf6f0779e5f3a044-300x206.jpg 300w, https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2024\/12\/40f587453684174baf6f0779e5f3a044-1024x702.jpg 1024w, https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2024\/12\/40f587453684174baf6f0779e5f3a044-768x526.jpg 768w, https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2024\/12\/40f587453684174baf6f0779e5f3a044-1536x1053.jpg 1536w\" sizes=\"auto, (max-width: 350px) 100vw, 350px\" \/><\/p>\n<p>This felt like the &#8220;Golden Ratio&#8221; for a great visual, though I think I used slightly too much water to dissolve the potassium iodide.<\/p>\n<h3>3. 200mL Hydrogen Peroxide + 6 tbsp Potassium Iodide (dissolved in 30mL warm water)<\/h3>\n<p>Finally, I tried the same 200mL of hydrogen peroxide but concentrated the catalyst by using only 30mL of warm water for the potassium iodide.<\/p>\n<p><iframe loading=\"lazy\" title=\"\u5de8\u5927\u306a\u6ce1\u304c\u5927\u7206\u767a\uff01\uff1f\u30be\u30a6\u306e\u6b6f\u78e8\u304d\u7c89\u5b9f\u9a13\u3084\u3063\u3066\u307f\u305f\uff01\" width=\"1140\" height=\"641\" src=\"https:\/\/www.youtube.com\/embed\/cDl4vuLCP78?feature=oembed\" frameborder=\"0\" allow=\"accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture; web-share\" referrerpolicy=\"strict-origin-when-cross-origin\" allowfullscreen><\/iframe><\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone wp-image-48087 aligncenter\" src=\"https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2024\/12\/e18417adc9438050659c8171b65173e0.jpg\" alt=\"\" width=\"369\" height=\"222\" srcset=\"https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2024\/12\/e18417adc9438050659c8171b65173e0.jpg 2296w, https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2024\/12\/e18417adc9438050659c8171b65173e0-300x180.jpg 300w, https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2024\/12\/e18417adc9438050659c8171b65173e0-1024x615.jpg 1024w, https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2024\/12\/e18417adc9438050659c8171b65173e0-768x462.jpg 768w, https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2024\/12\/e18417adc9438050659c8171b65173e0-1536x923.jpg 1536w, https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2024\/12\/e18417adc9438050659c8171b65173e0-2048x1231.jpg 2048w\" sizes=\"auto, (max-width: 369px) 100vw, 369px\" \/><\/p>\n<p style=\"text-align: center;\">Another desk-engulfing success!<\/p>\n<p>For those curious, the dish soap I used was &#8220;Kyukyutto&#8221; (a popular Japanese brand).<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone wp-image-48090 aligncenter\" src=\"https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2024\/12\/cd5edbe13eb367ea68ceff47bcdf3210.jpg\" alt=\"\" width=\"179\" height=\"412\" srcset=\"https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2024\/12\/cd5edbe13eb367ea68ceff47bcdf3210.jpg 448w, https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2024\/12\/cd5edbe13eb367ea68ceff47bcdf3210-130x300.jpg 130w, https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2024\/12\/cd5edbe13eb367ea68ceff47bcdf3210-445x1024.jpg 445w\" sizes=\"auto, (max-width: 179px) 100vw, 179px\" \/><\/p>\n<p>A very important safety note: while weak hydrogen peroxide is sold as a common antiseptic (Oxydol), high-concentration hydrogen peroxide is dangerous. It is corrosive and can cause chemical burns. Even the foam looks tempting to touch, but please don&#8217;t! It will turn your skin white and cause a painful stinging sensation that lasts all day. Always wear gloves, a lab coat, and safety goggles. Cleanup should always be handled by the instructor. I actually accidentally touched some during the cleanup, and my skin turned white immediately. Stay safe and keep your distance from the foam!<\/p>\n<p><a href=\"https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2014\/05\/c470f08a19e2c97e28e5a404b240e062.jpg\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-medium wp-image-4308 aligncenter\" src=\"https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2014\/05\/c470f08a19e2c97e28e5a404b240e062-300x236.jpg\" sizes=\"auto, (max-width: 300px) 100vw, 300px\" srcset=\"https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2014\/05\/c470f08a19e2c97e28e5a404b240e062-300x236.jpg 300w, https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2014\/05\/c470f08a19e2c97e28e5a404b240e062.jpg 346w\" alt=\"Screenshot\" width=\"300\" height=\"236\" \/><\/a><\/p>\n<p style=\"text-align: left;\">This is what happens when you touch it\u2014my own skin after an accidental &#8220;human experiment.&#8221; The stinging lasted for quite a while. <span style=\"font-size: medium;\"><a href=\"https:\/\/docs.google.com\/presentation\/d\/1F5SgIGVjIUoepd01UJLOhphXTWx-Z0YJknFOLi2FjjM\/edit?usp=sharing\">Click here for the explanatory slides created by our Science Club!<\/a> It&#8217;s a great resource.<\/span><\/p>\n<h3>Contact &amp; More<\/h3>\n<p>Let\u2019s make the wonders of science a part of your daily life! I\u2019ve put together plenty of fun experiments and tips you can try at home. Feel free to explore!<br \/>\n\u30fbMy book &#8220;Science Notebook&#8221; is now available. Details <a href=\"https:\/\/amzn.to\/42PMCEL\">here<\/a>.<br \/>\n\u30fbLearn more about me, Ken Kuwako, <a href=\"https:\/\/phys-edu.net\/wp\/?page_id=37\">here<\/a>.<br \/>\n\u30fbFor inquiries (writing, speaking, workshops, TV supervision, etc.), click <a href=\"https:\/\/phys-edu.net\/wp\/?page_id=188\">here<\/a>.<br \/>\n<span class=\"s2\">\u30fbGet the latest updates on <a href=\"https:\/\/x.com\/kuwako\">X (formerly Twitter)<\/a>!<\/span><\/p>\n<p style=\"text-align: center;\"><a href=\"https:\/\/www.youtube.com\/user\/kkuwako\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone wp-image-35048\" src=\"https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2020\/03\/3d9640dad7bc5538e76f92da1966ee19.jpg\" alt=\"\" width=\"30\" height=\"21\" \/><\/a> Check out my experiment videos on the <a href=\"https:\/\/www.youtube.com\/user\/kkuwako?sub_confirmation=1\">Science Material Channel<\/a>!<\/p>\n<h3>\uff15\u6708\u306e\u30a4\u30c1\u30aa\u30b7\u5b9f\u9a13\uff01<\/h3>\r\n<p>\u30ad\u30fc\u30f3\u3068\u51b7\u3048\u308b\u30c9\u30e9\u30a4\u30a2\u30a4\u30b9\uff01\u6c17\u6e29\u304c\u4e0a\u304c\u3063\u3066\u304f\u308b\u3053\u306e\u6642\u671f\u30fb\u30c9\u30e9\u30a4\u30a2\u30a4\u30b9\u3092\u4f7f\u3063\u305f\u6607\u83ef\u30fb\u51dd\u7d50\u30fb\u7b49\u901f\u5ea6\u76f4\u7dda\u904b\u52d5\u306e\u5b9f\u9a13\u306f\u3044\u304b\u304c\uff1f<\/p>\r\n<p><img class=\"alignnone wp-image-39516 aligncenter\" src=\"https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2022\/03\/0618612becc032a60bdda50090ccccbe.jpg\" sizes=\"auto, (max-width: 550px) 100vw, 550px\" srcset=\"https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2022\/03\/0618612becc032a60bdda50090ccccbe.jpg 1406w, https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2022\/03\/0618612becc032a60bdda50090ccccbe-300x168.jpg 300w, https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2022\/03\/0618612becc032a60bdda50090ccccbe-1024x572.jpg 1024w, https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2022\/03\/0618612becc032a60bdda50090ccccbe-768x429.jpg 768w, https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2022\/03\/0618612becc032a60bdda50090ccccbe-320x180.jpg 320w\" alt=\"\" width=\"453\" height=\"253\" \/><\/p>\r\n<p style=\"text-align: center;\"><a href=\"https:\/\/phys-edu.net\/wp\/?p=39513\">\u6db2\u4f53\u30bc\u30ed\uff01\u30c9\u30e9\u30a4\u30a2\u30a4\u30b9\u304c\u6d88\u3048\u308b\u307e\u3067\u306e\uff13\u6642\u9593\u3092\u79d1\u5b66\u3059\u308b\uff08\u6607\u83ef\u30fb\u51dd\u7d50\u30fb\u7b49\u901f\u5ea6\u76f4\u7dda\u904b\u52d5\uff09<\/a><\/p>\r\n<h3 style=\"text-align: left;\"><span style=\"font-size: medium;\"><b><strong>\u30c6\u30ec\u30d3\u756a\u7d44\u76e3\u4fee\u30fb\u30a4\u30d9\u30f3\u30c8\u7b49\u306e\u304a\u77e5\u3089\u305b<\/strong><\/b><\/span><\/h3>\r\n<ul>\r\n<li>4\u670830\u65e5\uff08\u6728\uff09\u300cTHE\u7a81\u7834\u30d5\u30a1\u30a4\u30eb\u300d\uff08\u65e5\u672c\u30c6\u30ec\u30d3\uff09\u306e<a href=\"https:\/\/phys-edu.net\/wp\/?p=62906\">\u79d1\u5b66\u76e3\u4fee\u3092\u62c5\u5f53\u3057\u307e\u3057\u305f<\/a>\u3002<\/li>\r\n<li>5\u67088\u65e5\uff08\u91d1\uff09<a href=\"https:\/\/phys-edu.net\/wp\/?p=62629\">\u7406\u79d1\u6559\u80b2\u30cb\u30e5\u30fc\u30b9<\/a>\u3092\u62c5\u5f53\u3057\u307e\u3057\u305f\u3002<\/li>\r\n<li>6\u670814\u65e5\uff08\u65e5\uff09\u3000\u5343\u8449\u5927\u5b66\u30a4\u30f3\u30b9\u30bf\u30ec\u30fc\u30b7\u30e7\u30f3\u300c\u63a2\u7a76\u300d\u306b\u3066\u8b1b\u5e2b\u3092\u52d9\u3081\u307e\u3059<\/li>\r\n<li>6\u670826\u65e5\uff08\u91d1\uff09\u3000\u5343\u8449\u5927\u5b66\u306e\u516c\u958b\u7814\u7a76\u4f1a\uff08\u4e2d\u5b66\u7406\u79d1\u306b\u3064\u3044\u3066\u6388\u696d\u516c\u958b\u4e88\u5b9a\uff09<\/li>\r\n<li>7\u670818\u65e5\uff08\u571f\uff09\u3000<a href=\"https:\/\/phys-edu.net\/wp\/?p=60018\">\u6559\u54e1\u5411\u3051\u5b9f\u9a13\u8b1b\u7fd2\u4f1a\u300c\u30ca\u30ea\u30ab\u30ab\u30b5\u30a4\u30a8\u30f3\u30b9\u30a2\u30ab\u30c7\u30df\u30fc\u300d\u306e\u8b1b\u5e2b\u3092\u3057\u307e\u3059<\/a>\u3002\u304a\u4f1a\u3044\u3057\u307e\u3057\u3087\u3046\u3002<\/li>\r\n<\/ul>\r\n<h3><b>\u66f8\u7c4d<strong>\u306e\u304a\u77e5\u3089\u305b<\/strong><\/b><\/h3>\r\n<ul>\r\n<li>\u300e\u5927\u4eba\u306e\u305f\u3081\u306e\u9ad8\u6821\u7269\u7406\u5fa9\u7fd2\u5e33\u300f\uff08\u8b1b\u8ac7\u793e\uff09\u2026\u4e00\u822c\u5411\u3051\u306b\u65e5\u5e38\u306e\u7269\u7406\u306b\u3064\u3044\u3066\u516c\u5f0f\u3092\u5143\u306b\u7d10\u89e3\u304d\u307e\u3057\u305f\u3002<a href=\"https:\/\/phys-edu.net\/wp\/?p=1827\">\u7279\u8a2d\u30b5\u30a4\u30c8<\/a>\u3067\u306f\u5b9f\u9a13\u3092\u591a\u6570\u7d39\u4ecb\u3057\u3066\u3044\u307e\u3059\u3002<strong>\u203b\u5897\u5237\u304c\u304b\u304b\u308a\uff16\u5237\u3068\u306a\u308a\u307e\u3057\u305f\uff082026\/02\/01\uff09<br \/><img class=\"alignnone wp-image-10940 aligncenter\" src=\"https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2013\/12\/0811159a99f69eeff1a357e3daed84e0-300x262.jpg\" sizes=\"(max-width: 220px) 100vw, 220px\" srcset=\"https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2013\/12\/0811159a99f69eeff1a357e3daed84e0-300x262.jpg 300w, https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2013\/12\/0811159a99f69eeff1a357e3daed84e0.jpg 311w\" alt=\"\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8 2014-07-05 0.43.51\" width=\"220\" height=\"192\" \/><br \/><\/strong><\/li>\r\n<li>\u300e\u304d\u3081\u308b!\u5171\u901a\u30c6\u30b9\u30c8 \u7269\u7406\u57fa\u790e \u6539\u8a02\u7248\u300f\uff08\u5b66\u7814\uff09\u2026\u3000\u9ad8\u6821\u7269\u7406\u306e\u53c2\u8003\u66f8\u3067\u3059\u3002\u30a4\u30e9\u30b9\u30c8\u3092\u591a\u304f\u3057\u3066\u30a4\u30e1\u30fc\u30b8\u304c\u6301\u3066\u308b\u3088\u3046\u306b\u63cf\u304d\u307e\u3057\u305f\u3002\u6388\u696d\u306b\u3064\u3044\u3066\u3044\u3051\u306a\u3044\u3001\u7269\u7406\u304c\u82e6\u624b\u3001\u305d\u3093\u306a\u751f\u5f92\u306b\u304a\u3059\u3059\u3081\u3067\u3059\u3002<a href=\"https:\/\/phys-edu.net\/wp\/?p=45322\">\u7279\u8a2d\u30b5\u30a4\u30c8<\/a>\u306f\u3053\u3061\u3089\u3002<br \/><img class=\"alignnone wp-image-45718 aligncenter\" src=\"https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2024\/04\/dc1da64a8c8d1422062b4867c0607a1c.jpg\" sizes=\"(max-width: 184px) 100vw, 184px\" srcset=\"https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2024\/04\/dc1da64a8c8d1422062b4867c0607a1c.jpg 756w, https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2024\/04\/dc1da64a8c8d1422062b4867c0607a1c-300x269.jpg 300w\" alt=\"\" width=\"184\" height=\"165\" \/><\/li>\r\n<\/ul>\r\n<h3><span style=\"text-align: center;\">\u5404\u7a2eSNS\uff08\u66f4\u65b0\u60c5\u5831\u3092\u304a\u5c4a\u3051\uff01\uff09<\/span><\/h3>\r\n<p style=\"text-align: center;\"><a style=\"text-align: center;\" href=\"https:\/\/twitter.com\/kuwako\">X(Twitter)<\/a><span style=\"text-align: center;\">\uff0f<\/span><a style=\"text-align: center;\" href=\"https:\/\/www.instagram.com\/science_seeds\/\">instagram<\/a><span style=\"text-align: center;\">\uff0f<\/span><a style=\"text-align: center;\" href=\"https:\/\/www.facebook.com\/kuwakolab\/\">Facebook<\/a>\uff08\u65e5\u672c\u8a9e\uff09<\/p>\r\n<p style=\"text-align: center;\"><a style=\"text-align: center;\" href=\"https:\/\/bsky.app\/profile\/kagakunoneta.bsky.social\">BlueSky<\/a><span style=\"text-align: center;\">\uff0f<\/span><a style=\"text-align: center;\" href=\"https:\/\/www.threads.net\/@science_seeds?hl=ja\">Threads<\/a>\uff08\u82f1\u8a9e\uff09<\/p>\r\n<h3 style=\"text-align: center;\"><strong>Explore<\/strong><\/h3>\r\n<ul>\r\n<li><a href=\"https:\/\/phys-edu.net\/wp\/?page_id=30764\">\u697d\u3057\u3044\u5b9f\u9a13<\/a>\u2026\u304a\u5b50\u3055\u3093\u3068\u4e00\u7dd2\u306b\u5922\u4e2d\u306b\u306a\u308c\u308b\u30a4\u30c1\u30aa\u30b7\u306e\u79d1\u5b66\u5b9f\u9a13\u3092\u591a\u6570\u7d39\u4ecb\u3057\u3066\u3044\u307e\u3059\u3002\u307e\u305f\u3001\u9ad8\u6821\u7269\u7406\u306e\u7406\u89e3\u3092\u6df1\u3081\u308b\u305f\u3081\u306e\u52d5\u753b\u6559\u6750\u3082\u7528\u610f\u3057\u307e\u3057\u305f\u3002<\/li>\r\n<li><a href=\"https:\/\/phys-edu.net\/wp\/?page_id=798\">\u7406\u79d1\u306e\u6559\u6750<\/a>\u2026 \u7406\u79d1\u6559\u5e2b\u3092\u30d0\u30c3\u30af\u30a2\u30c3\u30d7\uff01\u6388\u696d\u306e\u8cea\u3092\u9ad8\u3081\u3001\u6e96\u5099\u3092\u52b9\u7387\u5316\u3059\u308b\u305f\u3081\u306e\u9078\u308a\u3059\u3050\u308a\u306e\u6559\u6750\u3092\u7d39\u4ecb\u3057\u3066\u3044\u307e\u3059\u3002<\/li>\r\n<li><a href=\"https:\/\/www.youtube.com\/c\/kkuwako\">Youtube<\/a>\u2026\u79d1\u5b66\u5b9f\u9a13\u7b49\u306e\u52d5\u753b\u3092\u914d\u4fe1\u3057\u3066\u3044\u307e\u3059\u3002<\/li>\r\n<li><a href=\"https:\/\/music.youtube.com\/playlist?list=PLoK4ZvKN9S2NgpYIochcQs0aL-vrRB_Qw\">\u79d1\u5b66\u30e9\u30b8\u30aa<\/a>\u00a0\u2026\u79d1\u5b66\u30c8\u30d4\u30c3\u30af\u3092\u307b\u307c\u6bce\u65e5\u914d\u4fe1\u4e2d\uff01AI\u6280\u8853\u3092\u99c6\u4f7f\u3057\u3066\u4f5c\u6210\u3057\u305f\u300c\u8033\u3067\u697d\u3057\u3080\u79d1\u5b66\u300d\u3092\u304a\u5c4a\u3051\u3057\u307e\u3059\u3002<\/li>\r\n<li><a href=\"http:\/\/phys-edu.net\/wp\/?page_id=20940\">\u8b1b\u6f14<\/a>\u00a0\u2026\u5168\u56fd\u5404\u5730\u3067\u5b9f\u9a13\u8b1b\u7fd2\u4f1a\u30fb\u30b5\u30a4\u30a8\u30f3\u30b9\u30b7\u30e7\u30fc\u7b49\u3092\u884c\u3063\u3066\u3044\u307e\u3059\u3002<\/li>\r\n<li><a href=\"http:\/\/phys-edu.net\/wp\/?page_id=37\">About<\/a>\u00a0\u2026\u300c\u79d1\u5b66\u306e\u30cd\u30bf\u5e33\u300d\u306e\u30b3\u30f3\u30bb\u30d7\u30c8\u3084\u3001\u904b\u55b6\u8005\u3067\u3042\u308b\u6851\u5b50\u7814\u306e\u30d7\u30ed\u30d5\u30a3\u30fc\u30eb\u30fb\u60f3\u3044\u3092\u307e\u3068\u3081\u3066\u3044\u307e\u3059\u3002<\/li>\r\n<li><a href=\"https:\/\/phys-edu.net\/wp\/?page_id=188\">\u304a\u554f\u3044\u5408\u308f\u305b<\/a> \u2026\u5b9f\u9a13\u6559\u5ba4\u306e\u3054\u4f9d\u983c\u3001\u57f7\u7b46\u30fb\u8b1b\u6f14\u306e\u76f8\u8ac7\u3001\u79d1\u5b66\u76e3\u4fee\u7b49\u306f\u3053\u3061\u3089\u306e\u30d5\u30a9\u30fc\u30e0\u304b\u3089\u304a\u5bc4\u305b\u304f\u3060\u3055\u3044\u3002<\/li>\r\n<\/ul>\r\n","protected":false},"excerpt":{"rendered":"<p>Hi, I&#8217;m Ken Kuwako, your Science Trainer. Every day is an experiment! \u3010This article is also available on [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":49501,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_sitemap_exclude":false,"_sitemap_priority":"","_sitemap_frequency":"","sns_share_botton_hide":"","vkExUnit_sns_title":"","vkexunit_cta_each_option":"","_lightning_design_setting":{"layout":"default"},"footnotes":""},"categories":[781],"tags":[],"class_list":["post-51776","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-science-en"],"jetpack_featured_media_url":"https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2024\/12\/efe37dd373658446d0958c77b40b3bc5.jpg","jetpack-related-posts":[{"id":51926,"url":"https:\/\/phys-edu.net\/wp\/?p=51926&lang=en","url_meta":{"origin":51776,"position":0},"title":"Hold Science in Your Hand! Unlocking the Secret of the Vein\u2019s One-Way Valve","author":"\u6851\u5b50 \u7814","date":"2025\u5e749\u670811\u65e5","format":false,"excerpt":"Hi, I'm Ken Kuwako, a science trainer. Every day i\u2026","rel":"","context":"Science","block_context":{"text":"Science","link":"https:\/\/phys-edu.net\/wp\/?cat=781&lang=en"},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/phys-edu.net\/wp\/wp-content\/uploads\/2025\/03\/5b91b492949018f9429d9d1c39c274e0.jpg?resize=350%2C200&ssl=1","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/phys-edu.net\/wp\/wp-content\/uploads\/2025\/03\/5b91b492949018f9429d9d1c39c274e0.jpg?resize=350%2C200&ssl=1 1x, https:\/\/i0.wp.com\/phys-edu.net\/wp\/wp-content\/uploads\/2025\/03\/5b91b492949018f9429d9d1c39c274e0.jpg?resize=525%2C300&ssl=1 1.5x, https:\/\/i0.wp.com\/phys-edu.net\/wp\/wp-content\/uploads\/2025\/03\/5b91b492949018f9429d9d1c39c274e0.jpg?resize=700%2C400&ssl=1 2x"},"classes":[]},{"id":51559,"url":"https:\/\/phys-edu.net\/wp\/?p=51559&lang=en","url_meta":{"origin":51776,"position":1},"title":"Don\u2019t Throw It Away! Can Packing Material Turn into a Magic Item? Rub It and Stick It to Your Body! (Static Electricity Experiment)","author":"\u6851\u5b50 \u7814","date":"2025\u5e749\u67085\u65e5","format":false,"excerpt":"I'm Ken Kuwako, your science trainer. Every day is\u2026","rel":"","context":"Science","block_context":{"text":"Science","link":"https:\/\/phys-edu.net\/wp\/?cat=781&lang=en"},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/phys-edu.net\/wp\/wp-content\/uploads\/2021\/01\/fc98512941756e65c7091aa3c017a031.jpg?resize=350%2C200&ssl=1","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/phys-edu.net\/wp\/wp-content\/uploads\/2021\/01\/fc98512941756e65c7091aa3c017a031.jpg?resize=350%2C200&ssl=1 1x, https:\/\/i0.wp.com\/phys-edu.net\/wp\/wp-content\/uploads\/2021\/01\/fc98512941756e65c7091aa3c017a031.jpg?resize=525%2C300&ssl=1 1.5x, https:\/\/i0.wp.com\/phys-edu.net\/wp\/wp-content\/uploads\/2021\/01\/fc98512941756e65c7091aa3c017a031.jpg?resize=700%2C400&ssl=1 2x"},"classes":[]},{"id":62063,"url":"https:\/\/phys-edu.net\/wp\/?p=62063&lang=en","url_meta":{"origin":51776,"position":2},"title":"Shadows Reveal Physics Secrets! The Surprising Link Between Uniform Circular Motion and Simple Harmonic Motion","author":"\u6851\u5b50 \u7814","date":"2026\u5e744\u67082\u65e5","format":false,"excerpt":"I'm Ken Kuwako, your Science Trainer. Every day is\u2026","rel":"","context":"Science","block_context":{"text":"Science","link":"https:\/\/phys-edu.net\/wp\/?cat=781&lang=en"},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/phys-edu.net\/wp\/wp-content\/uploads\/2019\/09\/ac6e22482b73255cab4a394316c38ad5.jpg?resize=350%2C200&ssl=1","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/phys-edu.net\/wp\/wp-content\/uploads\/2019\/09\/ac6e22482b73255cab4a394316c38ad5.jpg?resize=350%2C200&ssl=1 1x, https:\/\/i0.wp.com\/phys-edu.net\/wp\/wp-content\/uploads\/2019\/09\/ac6e22482b73255cab4a394316c38ad5.jpg?resize=525%2C300&ssl=1 1.5x, https:\/\/i0.wp.com\/phys-edu.net\/wp\/wp-content\/uploads\/2019\/09\/ac6e22482b73255cab4a394316c38ad5.jpg?resize=700%2C400&ssl=1 2x"},"classes":[]},{"id":51509,"url":"https:\/\/phys-edu.net\/wp\/?p=51509&lang=en","url_meta":{"origin":51776,"position":3},"title":"Measuring Reaction Time with a Ruler: The Ruler Drop Experiment","author":"\u6851\u5b50 \u7814","date":"2025\u5e749\u67084\u65e5","format":false,"excerpt":"I'm Ken Kuwako, the science trainer. 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