SCIENCE CLASS #6- What if Everyone Flushed their Toilet at Once?

Mark Rober

1.5 ਮਿਲੀਅਨ ਦ੍ਰਿਸ਼255

    Let's talk about pressure! I WILL DO ONE FINAL CLASS NEXT WEEK, MAY 6TH!
    Get your first KiwiCo Crate for FREE!!! www.kiwico.com/markrober
    Here is a great link to donate to help with Covid-19 aid- tiltify.com/united-way/hopefromhome

    ਨੂੰ ਪ੍ਰਕਾਸ਼ਿਤ ਕੀਤਾ ਗਿਆ 10 ਮਹੀਨੇ ਪਹਿਲਾਂ

    ਟਿੱਪਣੀਆਂ

    1. Mark Rober

      Thanks for coming to class!! I WILL DO ONE FINAL CLASS NEXT WEEK, MAY 6TH!

      1. gmcmillan1

        I love class

      2. Ivy Zhang

        okay

      3. John Gamble

        @RiverTiger767 air pressure changes.

      4. Cubiside

        (Edited)

      5. John Gamble

        I want to see an elephant in highheels......

    2. Stina Hayden, RDH, BS

      Title: What if everybody flushed their toilet at once? Video: Okay, I’m now going to lay on this bed of nails.

    3. Warren King

      You’re wrong about the elephant. You’re assuming all parts of the elephant’s foot distribute pressure evenly. But likely one or more points of the foot would hit first and be lower to the ground and what’s worse is there could also be a grain of dirt under the elephant’s foot that gets dragged around. The elephant would make a much bigger mess of the house.

    4. Katie Horton

      he is a nerd but he's still a really cool guy there's just something about him

    5. andy02q

      4:10 I said the elephant (ignoring everything except pressure) , but then you say I'm wrong and then you say that the elephant actually is the correct answer??

    6. Michael Tang

      The big millisecond developmentally order because ease frequently tumble past a old gear. waiting, minor frame

    7. Luke Oishi

      7:36 Mark's voice cracks...

    8. XENO Ramirez

      Merde Im French means sh**t

    9. Kaj van Veen

      Ok i will just cut my apples with air now. How little area do you want?

    10. BIKO ALVAREZ GALAN

      I love this class

    11. Jesus Quiroz

      7:35 voice crack 😂

    12. Emma Yennie

      Wow. I didn't realize we use so much water just flushing the toilet!

    13. Seatacos is dead

      Every time he said Preasure, I thought of Billy Joel’s song “Preasure”. And I think the first time I heard that song was when my Geophysics teacher played it during our weather unit.

    14. gmcmillan1

      check out a PAprom Channel called sach man

    15. gmcmillan1

      you are so smart

    16. gmcmillan1

      All

    17. gmcmillan1

      I love your video

    18. Mark Darden

      Dude you could teach at any k12 for whatever salary you choose and I would move so my kid could attend

    19. Flaps 40

      The fluid pressure is used to move the flight surfaces on planes just like at 17:00 (except the new planes, they use electricity)

    20. Mr Red

      this man is a legend

    21. Enthalpy endothelial

      The royal pot conceivably tickle because eggplant demographically peck under a red hardcover. public, interesting vinyl

    22. akridge

      no safety glasses on you or your friend when you broke the brick despite the talk of safety as you did it. But at least your hat stayed on.

    23. Jeffrey Saloka

      nothing against you Mark, but IMHO, you are just too loud, with almost too much effervesce, at least you're very exciting to watch and love what you do

    24. Boss 420

      Lmao you are awesome !

    25. kapowshi

      I love these lectures, I’m 26 and not in high school or college but the way he teaches makes you want to listen.

    26. Brayden Mata

      Hello

    27. Ray Bartlett

      If everyone flushed at once the Earth would spin faster

    28. D Bongoloid

      How many orbeez that man dump into his house lmao.

    29. Barbaros İmmanuel Gündüz

      Great video and demonstration as always! But I think you didn't take the front area of women"s shoes into consideration.

    30. Toxicity Level

      The amount of effort put into this is literally making me so grateful theres someone in the world like yoi

    31. Steam Roller

      Empathy sent me, I mean, he didnt. But he mentioned this

    32. Kristina Zivanovic

      I remember being a really young kid with my grandmother in town. There was a street performer doing entertainment and some magic. One thing he did was lay on a bed of nails and have a big man from the audience stand on his chest. Everyone was so impressed. So little old me had to jump out there and ruin the show and explain to the crowd that the nails would never hurt him because there's so many of them and they are so close together so his weight is distributed. If he layed on 3 nails he'd be hurt. To my surprise the man was no angry, he was so impressed a kid saw the science behind his trick lll

    33. Ksusha Ungurean

      I was looking for the toilets flushing at one but i still learned something that i will actually need and remember

    34. Tyler W

      We tried KiwiCo, wasn't a fan

    35. Adrián G. S.

      Maximun 720p? Just question, thanks!

    36. Kid fix it

      Me going to school for 8 hours a day : smol brain. Me watching mark for half a hour : infinite iq

      1. Howling Wolves

        haha funny made everyone laugh

    37. Endless Surprises

      Not worried about water leaking, Mark. Worried about blood! 😂

    38. GMD PurpleFlamePlayz

      Dude, when I was young I used to think water towers were just tall indoor swimming pools where they teach swimming lessons 😭

    39. Luke Arts

      Ok, so you're selling your videos as "Class". Then when you get all the underaged kids watch your videos, you suddenly plug a sponsor commercial? Bro, that's not done. Even though I really like that product, it's wrong. (and it's against PAprom and legal regulations. Content aimed at kids is not allowed to have commercials. (you should know, because you get asked this with every single upload and by uploading you sign off to understanding and knowing those rules.

    40. Mike Sadler

      the 804 people who didnt like this video are prob the people he says no 2 18:00

    41. robloxman274abc

      Mark should do a colab with colinfurze

      1. Ráðúlfr

        Nile red*

    42. Scarlett and Harry’s Universe

      This was so amazingly interesting

    43. Benji Porterfield

      This is so cool!!!!!!!!!

    44. Merrick Sanzo

      It's amazing to me that 1.4M people watched a guy explain the most simple and basic physics concepts for 30minutes lol. You learn this stuff in Jr. High. Mark you are the GOAT.

    45. Willem Duijnstee

      You are a wonderfull teacher and person Mark.

    46. Kamal Khatri

      I don't need sleep I need answers

    47. PRETZELZ

      Are the toilets empty or...

    48. Elliot Boepple

      His enthusiasm is contagious.

    49. George A

      If all toilets flushed at once, it would not make a dent in the Swamp.

    50. Santiago Saeijs

      hi

    51. Jerry D

      What’s under the hat? He always has one on.

    52. Inga Butler

      if you were my teacher, I would want to stay even more in your class, this dude deserves an award

    53. Jyotisko Sengupta

      School Science Class: Boring... Mark's Science Class: Interesting!!!

    54. Caden TheYoutuber

      the biggest crossover in history

      1. Jonythann

        Why are you watching this now.

    55. Eleanor Stanford

      You’re too adorable

    56. Sir Lloyd Classroom

      Can you do an experiment or a simulation of a low pressure then it becomes a typhoon.. Iike to share it to my students for the subject environmental science and the topic is natural disaster.. And what happens when there is no plants or trees in the whole world. The question is what is the time taken to consume the oxygen and becomes carbon dioxide? Thank you sir

    57. Rock N' Roll True Stories

      man i wish you were my physics teacher. Mine made us watch discovery channel each class and i literally learned nothing. Probably explained why i almost went on to almost fail engineering physics in college

    58. Rugby Mad Aunty

      So is the movie flushed away real or not real? 😂😂

    59. Laura Alagia

      Premier League

    60. Paul Jones

      you inspied me to get into enginering

    61. The Hagon Jones Homestead

      Who else really wants mark to teach there science class

    62. Nina P

      This was actually a question ive been wondering for a long time lol

    63. Ken Allen

      Don’t ask why I clicked on this video....

    64. Ruben van Maanen

      Like its useful for people who dont understand this easily, but once u understand, its boring

    65. Ruben van Maanen

      Do this again plsss

    66. lan3

      e

    67. David

      Put a Democrat in before you flush.

    68. WizMasterT

      Me After Watching This Stream: I wish Mark Rober is my new Science Teacher.

    69. Pinnacle Roofing

      unless the elephant is potty trained, i pick the woman

    70. oofley

      So this is the science behind cutting implements. Cool.

    71. BeautifulFireflies

      This video is so underrated 2,874 comments 1,369,659 views ??? Where are all the Mark Rober fans?

    72. Abejero ivan Ivan Abejero

      Welcome to science class

    73. Robert Sloan

      Can yo do more activitys with nature like the squrell course.

    74. Imman Playz

      I wish my teacher is like you .

    75. Thebigbopper28

      Hes that one teacher that you genuinely get sad when he yells at you

    76. Coach Wilson

      The Super Bowl halftime flush

    77. Dima Mura

      hi

    78. ypr figth

      Ah yes the Moment when you jump put of a Parachute

    79. Colin Richards

      All the sewer workers would be drowned!

    80. Adeum Deus

      I would think nothing. When watching shows like Dirty Jobs, it seemed that the sewage systems, even for large cities, was just a little "stream", if you will, of sewage flowing down a massive pipe. My guess would be that, even if every toilet in New York was flushed at the same time, the different paths sewage takes to reach the sewer would mean the load is spread over a pretty large area, and so it wouldn't just suddenly be a gushing torrent of sewage. Additionally, I would imagine sewage systems have redundancies and overflow lines to keep the system from blowing up. I remember when the giant fatberg was removed from a London sewer. Obviously that sewer line was not the only line, or else the entire community around that blockage would have backed up and wreaked havoc. But they didn't. Water might take a bit to refill, particularly in very densely populated areas, but plumbing is "primed" already (that is, my toilet tank already contains water for the next flush).

    81. ayub ahmed

      the best phy teacher

    82. Quazie Wabbit

      Something to think about: A blond in high heels might wreck your floors, but an elephant in the living room will destroy your entire house, because you know without a doubt, it will see a freak out and run!

    83. Renata

      Does anyone know that this actually happened in NY right after the series finally of mash. They experienced a huge loss in water pressure & a water shortage. You're welcome.

    84. Wrapped Goods

      Random thought: Stars consist of tight energy force. They don't consist of pressure.

    85. super hola

      Zac king skit

    86. Jay Brodie

      The biggest question here is who did he borrow those heels from?

    87. S B

      So when you get shot, you need to drink water and see if there are any leaks?

    88. M. Thomas Brown

      I can tell you what happens when all the toilets in one high school flush at once. And it wasn't pretty.

    89. ME

      Did the elephant clean its feet before walking on the floors? I would have added food coloring to the liquid stuff so it shows up better on camera. You did a great job on this.

    90. Brad Jones

      bottom

    91. Melody Mathilde

      Mark Rober is keeping me sane tbh

    92. User 5.56

      I wish my teachers teached like this in school i would of learned more & not fell alseep looking at numbers in a book

    93. Heather McD

      When I was a kid we used to do a thing where the biggest guy in our group would lay flat on the floor & then we would position ourselves with 1 person at his head, 1 person at his feel & two people either side of him with 2 just below his shoulders & 2 people just below his butt. Then we would just use the pointer & middle fingers on both hands & lift him up off the ground. Pretty cool.

    94. Lexi Anderson

      I would stay in school all week if he was the teacher!

    95. Man in the Park

      Also, you put the tape on top of the nail/balloon thing different for the 2 than for the 12. For the 2, you put the tape all the way near the edge. For the 12, you placed it further towards the hinges. That can change the outcome of your experiment, right?

    96. Man in the Park

      Your question was “which would you let into your house” not “which would you not let into your house”, right? I think my understanding of your solution was lost in translation.

    97. XXXDeathByFartsXXX

      You make me want to become smarter. My brain injury says otherwise.

    98. linoslovely

      if only my science class was like this.

    99. Julian Thurmes

      What if the sewer got full

    100. John Wayne

      Oh kay! Live is never perfect. You handled it perfectly.