The Sci Guys: Science at Home - SE3 - EP4: Water Glass Surface Tension

The Sci Guys: Science at Home - SE3 - EP4: Water Glass Surface Tension - Surface Tension of Water

Рет қаралды 157,242

9 жыл бұрын

Welcome to episode four, season three of science at home. In this episode we add pennies into a full glass of water to show how surface tension will create a convex dome of water that rises above the rim of the glass. Surface tension is generated by cohesion and keeps an elastic tension between all the molecules in a liquid. The water has one of the highest surface tension. At the end of the episode you will be able to explain surface tension and you will be able to demonstrate the dome created by the surface tension of water.
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Equipment and Ingredients:
Water
Glass
Food Colouring
20-30 Pennies
Measuring Cups
Gloves
Goggles
Lab coat or Apron
Previous Episode: Whoosh Bottle - • The Sci Guys: Science ...
Next Episode: Magnet in a Copper Tube - Eddy Currents and Lenz's • The Sci Guys: Science ...
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Пікірлер: 88

@Alex-nu4cb 7 жыл бұрын

Simple concept, yet the book makes it ridiculously complicated. Thanks

@freaydkisaragi7308 4 жыл бұрын

I came here because of jojo. All I can say is that Its your turn Mr. Joestar.

@JohnSmith-co1zv 3 жыл бұрын

Ok Barbie

@nathangitz2674 3 жыл бұрын

@@JohnSmith-co1zv "D'Arby, sir. The name is D'Arby."

@BSTRDSTV 3 жыл бұрын

Ok Obi

@nathangitz2674 2 жыл бұрын

@@BSTRDSTV "It's D'Arby! Don't make me say it again! I told you my name is D'Arby, understand?! Not Obi, not Barbie!"

@lebaguette5393 Жыл бұрын

Go ahead, Mr. Joesturr

@ovahlord1451 5 жыл бұрын

more importantly does the chocolate trick that d'arby did work?

@rook8472 4 жыл бұрын

I knew someone would say it

@EvilMaster4002 4 жыл бұрын

Go ahead Mr joestar.

@Romeokonggo 2 жыл бұрын

Omgosh I'm not the only one lmaoOooo

@kashigi3573 3 жыл бұрын

Lol I'm here from school but I love that there are Jojo fans here, I swear everything is a jojo reference.

@dhananjaybomidi7184 7 жыл бұрын

thank a lot guys. searched the whole you tube, went baffled and then i meet your video.. Hats off!! nice creativity and concept explaining through your animation quality.

@Johnnzee 3 жыл бұрын

Please come back and make more videos! More kids are learning online more than ever, and your videos have been a god send for them.

@SillySciencewithSimon 3 жыл бұрын

100% agree!

@kevdawgsports7503 4 жыл бұрын

Go ahead, mr joestar

@SabyasachiChatterjee 5 жыл бұрын

Rightly explained ! Super like. Love from India

@jeffreypopek 7 жыл бұрын

Thanks, this really helped me

@Hamsolo5533 9 жыл бұрын

you guys are great at making videos

@deviviswanathan6493 5 жыл бұрын

Great video, keep up the good work......

@m16biswas45 6 жыл бұрын

Thanks for clear my concepts

@1dmandyzhou 9 жыл бұрын

I love your videos! They are all easy to understand and are nicely explained. :)

@TheSciGuys 9 жыл бұрын

Mandy Zhou I am glad that you love our videos!! We have plenty more to come.

@evanroberts1862 7 жыл бұрын

Thanks for a concise and accurate explanation. This was excellent!

@voidgalaxy1838 3 жыл бұрын

I thought you said conscience, I was about to write a very long comment.

@pinkishinde4464 6 жыл бұрын

If we had people like you in college it would be so fun

@ashaprasad8873 2 жыл бұрын

Awesome explanation

@DantadGames 7 жыл бұрын

Love this

@IvannaperezElkIP123 9 жыл бұрын

Great video :D

@user-ke2el9hn9f 8 жыл бұрын

Truly helps visualisation of surface tension. Thanks :)

@TheSciGuys 8 жыл бұрын

+James Foo You're very welcome. Glad you found it helpful.

@rokumaodong3601 4 жыл бұрын

Jojo?

@imaanshahbaz4748 8 жыл бұрын

Thanks it was verry helpful

@joebloe1591 4 жыл бұрын

Sci guys are the best

@aminhaekal5709 3 жыл бұрын

Go ahead, Mister Joestar

@TrillNGR 8 жыл бұрын

thanks!

@sarahkhaled547 8 жыл бұрын

u are the best one express that phenomenon thx

@TheSciGuys 8 жыл бұрын

+Sarah Khaled Thanks!!

@alaynadavidson8478 4 жыл бұрын

Nice video

@swapnameganathan6516 3 жыл бұрын

COOL!!!

@MiketheHighLord 6 жыл бұрын

I had a glass of salt water sitting on the counter. After a few day's, salt crystals formed up the side of the glass. I think you guys could make a great video explaining what happened there!

@gayathrij4259 6 жыл бұрын

Nice

@Beyond_Belief534 5 жыл бұрын

Are there any practical examples for a body of water naturally conforming to the exterior of a shape?

@fretlessman71 Жыл бұрын

I've been trying to answer this question for years. If you put water in a glass but don't fill it all the way up to the top, is there a difference between the surface tension in the center versus the edge?

@abhinavjain785 7 жыл бұрын

I have a question why do liquids try to attain minimum surface area?

@josetteblocker5472 4 жыл бұрын

Hi this is Autumn Falwell completing my QuestFest task. It took 31 pennies before the water spilled over.

@richardboatwright9653 9 жыл бұрын

Not a word about the hyfrogen bonding which helps the water molecules stick together much stronger than some other liquids? Hydrogen bonding adds a lot to the surface tension. Also you can do this experiment by dropping water droplets onto a penny. I could only get 11 drops back when we did this experiment in grade school.

@TheSciGuys 9 жыл бұрын

***** We didn't mention hydrogen bonding because our average audience doesn't typically learn that concept till much later on.This episode was made as an introduction to surface tension, we have plans to do the droplets of liquids into pennies. In that episode we would expand on the concepts and explain why water is stronger than other liquids that we test on the pennies.

@mostafakhalel5479 8 жыл бұрын

you helped me get surface tension

@TheSciGuys 8 жыл бұрын

+Mostafa Khalel Glad to hear it :)

@kaib-k754 8 жыл бұрын

thx it helped in science

@TheSciGuys 8 жыл бұрын

+kka52 e2 You're most welcome. Thanks for watching our video!!

@billyhargrove2216 3 жыл бұрын

Memories...

@jshrike3527 9 жыл бұрын

Post more videos

@TheSciGuys 9 жыл бұрын

We plan on it. A video should be out in about a week. We try to post videos every second week. If we can raise enough funding on patreon once that launches, we will be able to post weekly or more videos.

@idicula1979 6 жыл бұрын

Isn't it interesting that from a ship floating is in the influence of surface tension, while a capsized boat fall in doom of pressure till it cracks and fissures.

@Ravi-nq9qy 7 жыл бұрын

Food for thought From this experiment we can learn that we should always drink water from spherical shape pot. Because surface tension very low. When you drink water from any spherical shape storage object, water surface will be less tense and your intestine will remain open for good digestion. Benefit of low tension water is not visible right away but in long run it does help your health. Calculation lets take cylinder shape glass of water, and round shape water glass (we can ignore slight flat bottom of spherical glass) area of object in cm2 spherical shape glass radius is 5 cm so area will be π * r * r = 78.54 cm2 area of cylinder shape glass with radius 2 cm and height 5 cm ( 2*π*r*h+2*π*r*2) = 87.96cm2 lets spherical volume in cm3 for each object spherical shape object volume (4/3πr3) = 523.6 cm3 cylinder shape object volume (πr2h) = 62.83 cm3 which is very less then spherical object. So there are way more water molecules are in touch with surface in regular glass of water then water stored in spherical shape glass.

@ms.mclaughlin6598 4 жыл бұрын

Please correct that gravity pulls water down not pushes from the top of the water's surface and air pressure pushes. Thank you!!

@yashtailor1543 6 жыл бұрын

A question

@mattkammer1617 5 жыл бұрын

0:24

@ranik8337 2 жыл бұрын

Our teacher use this video for an e. G

@destinoaguilar7006 7 жыл бұрын

XD I thought it would be harder

@veronicahawkins4347 4 жыл бұрын

You may want to fix the calculation on how much water is in an 8 oz cup of water... 7.91 x 10^24 is 7,910,000,000,000,000,000,000,000 not 79,100,000,000,000,000,000,000,000

@mattkammer1617 5 жыл бұрын

3:57

@lillybee2951 9 жыл бұрын

Wait your canadian awesome I am to !!!

@TheSciGuys 9 жыл бұрын

lilly bee sweet :) Go Canada!! Help us grow our Canadian subscriber base by sharing our videos with your friends and subscribe :)

@samford7278 4 жыл бұрын

1:45

@thereadingfactoryinc4969 6 жыл бұрын

WH DID YOU NOT MAKE SOMETHING FLOAT

@thefoodisjazzy8633 2 жыл бұрын

IS THAT A JOJO REFERENCE 1:15

@hooliator 2 жыл бұрын

Those hydrogen molecules seem to be enjoying themselves at the expense of the oxygen molecules...

@molly1329 7 жыл бұрын

excellent ,excellent but you have to notice not all your audience may be Canadian or American who can understand your speedy explanation. you speak with 100 word /minutes you should bring it to50-60 word per minutes.How ever your excellent work appreciated very much.

@brettstone1748 2 жыл бұрын

Settings /Playback Speed /.5 yyyoooouuuu aaaarrrreeee wwwweeeellllccccoooommmmeeeee.