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

8 apr 2020
1 477 203 Skatījumi

Let's talk about pressure! I WILL DO ONE FINAL CLASS NEXT WEEK, MAY 6TH!
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  • Thanks for coming to class!! I WILL DO ONE FINAL CLASS NEXT WEEK, MAY 6TH!

    Mark RoberMark RoberPirms 10 Mēnešiem
    • I love class

      gmcmillan1gmcmillan1Pirms 6 dienām
    • okay

      Ivy ZhangIvy ZhangPirms Mēneša
    • @RiverTiger767 air pressure changes.

      John GambleJohn GamblePirms Mēneša
    • (Edited)

      CubisideCubisidePirms Mēneša
    • I want to see an elephant in highheels......

      John GambleJohn GamblePirms Mēneša
  • 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.

    Warren KingWarren KingPirms dienas
  • he is a nerd but he's still a really cool guy there's just something about him

    Katie HortonKatie HortonPirms 2 dienām
  • 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??

    andy02qandy02qPirms 2 dienām
  • The big millisecond developmentally order because ease frequently tumble past a old gear. waiting, minor frame

    Michael TangMichael TangPirms 2 dienām
  • 7:36 Mark's voice cracks...

    Luke OishiLuke OishiPirms 3 dienām
  • Merde Im French means sh**t

    XENO RamirezXENO RamirezPirms 4 dienām
  • Ok i will just cut my apples with air now. How little area do you want?

    Kaj van VeenKaj van VeenPirms 4 dienām
  • I love this class

  • 7:35 voice crack 😂

    Jesus QuirozJesus QuirozPirms 5 dienām
  • Wow. I didn't realize we use so much water just flushing the toilet!

    Emma YennieEmma YenniePirms 6 dienām
  • 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.

    Seatacos is deadSeatacos is deadPirms 6 dienām
  • check out a LVworld Channel called sach man

    gmcmillan1gmcmillan1Pirms 6 dienām
  • you are so smart

    gmcmillan1gmcmillan1Pirms 6 dienām
  • All

    gmcmillan1gmcmillan1Pirms 6 dienām
  • I love your video

    gmcmillan1gmcmillan1Pirms 6 dienām
  • Dude you could teach at any k12 for whatever salary you choose and I would move so my kid could attend

    Mark DardenMark DardenPirms 8 dienām
  • The fluid pressure is used to move the flight surfaces on planes just like at 17:00 (except the new planes, they use electricity)

    Flaps 40Flaps 40Pirms 8 dienām
  • this man is a legend

    Mr RedMr RedPirms 9 dienām
  • The royal pot conceivably tickle because eggplant demographically peck under a red hardcover. public, interesting vinyl

    Enthalpy endothelialEnthalpy endothelialPirms 9 dienām
  • 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.

    akridgeakridgePirms 10 dienām
  • 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

    Jeffrey SalokaJeffrey SalokaPirms 11 dienām
  • Lmao you are awesome !

    Boss 420Boss 420Pirms 11 dienām
  • I love these lectures, I’m 26 and not in high school or college but the way he teaches makes you want to listen.

    kapowshikapowshiPirms 11 dienām
  • Hello

    Brayden MataBrayden MataPirms 12 dienām
  • If everyone flushed at once the Earth would spin faster

    Ray BartlettRay BartlettPirms 13 dienām
  • How many orbeez that man dump into his house lmao.

    D BongoloidD BongoloidPirms 13 dienām
  • Great video and demonstration as always! But I think you didn't take the front area of women"s shoes into consideration.

    Barbaros İmmanuel GündüzBarbaros İmmanuel GündüzPirms 13 dienām
  • The amount of effort put into this is literally making me so grateful theres someone in the world like yoi

    Toxicity LevelToxicity LevelPirms 14 dienām
  • Empathy sent me, I mean, he didnt. But he mentioned this

    Steam RollerSteam RollerPirms 14 dienām
  • 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

    Kristina ZivanovicKristina ZivanovicPirms 14 dienām
  • I was looking for the toilets flushing at one but i still learned something that i will actually need and remember

    Ksusha UngureanKsusha UngureanPirms 16 dienām
  • We tried KiwiCo, wasn't a fan

    Tyler WTyler WPirms 18 dienām
  • Maximun 720p? Just question, thanks!

    Adrián G. S.Adrián G. S.Pirms 20 dienām
  • No holes! Hopefully at least one

    NickynomadsNickynomadsPirms 20 dienām
  • Me going to school for 8 hours a day : smol brain. Me watching mark for half a hour : infinite iq

    Kid fix itKid fix itPirms 21 dienas
    • haha funny made everyone laugh

      Howling WolvesHowling WolvesPirms 12 dienām
  • Not worried about water leaking, Mark. Worried about blood! 😂

    Endless SurprisesEndless SurprisesPirms 21 dienas
  • Dude, when I was young I used to think water towers were just tall indoor swimming pools where they teach swimming lessons 😭

    GMD PurpleFlamePlayzGMD PurpleFlamePlayzPirms 21 dienas
  • 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 LVworld 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.

    Luke ArtsLuke ArtsPirms 21 dienas
  • the 804 people who didnt like this video are prob the people he says no 2 18:00

    Mike SadlerMike SadlerPirms 25 dienām
  • Mark should do a colab with colinfurze

    robloxman274abcrobloxman274abcPirms 29 dienām
    • Nile red*

      RáðúlfrRáðúlfrPirms 14 dienām
  • This was so amazingly interesting

    Scarlett and Harry’s UniverseScarlett and Harry’s UniversePirms 29 dienām
  • This is so cool!!!!!!!!!

    Benji PorterfieldBenji PorterfieldPirms 29 dienām
  • 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.

    Merrick SanzoMerrick SanzoPirms Mēneša
  • You are a wonderfull teacher and person Mark.

    Willem DuijnsteeWillem DuijnsteePirms Mēneša
  • I don't need sleep I need answers

    Kamal KhatriKamal KhatriPirms Mēneša
  • Are the toilets empty or...

  • His enthusiasm is contagious.

    Elliot BoeppleElliot BoepplePirms Mēneša
  • If all toilets flushed at once, it would not make a dent in the Swamp.

    George AGeorge APirms Mēneša
  • hi

    Santiago SaeijsSantiago SaeijsPirms Mēneša
  • What’s under the hat? He always has one on.

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

    Inga ButlerInga ButlerPirms Mēneša
  • School Science Class: Boring... Mark's Science Class: Interesting!!!

    Jyotisko SenguptaJyotisko SenguptaPirms Mēneša
  • the biggest crossover in history

    Caden TheYoutuberCaden TheYoutuberPirms Mēneša
    • Why are you watching this now.

      JonythannJonythannPirms Mēneša
  • You’re too adorable

    Eleanor StanfordEleanor StanfordPirms Mēneša
  • 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

    Sir Lloyd ClassroomSir Lloyd ClassroomPirms Mēneša
  • 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

    Rock N' Roll True StoriesRock N' Roll True StoriesPirms Mēneša
  • So is the movie flushed away real or not real? 😂😂

    Rugby Mad AuntyRugby Mad AuntyPirms Mēneša
  • Premier League

    Laura AlagiaLaura AlagiaPirms Mēneša
  • you inspied me to get into enginering

    Paul JonesPaul JonesPirms Mēneša
  • Who else really wants mark to teach there science class

    The Hagon Jones HomesteadThe Hagon Jones HomesteadPirms Mēneša
  • This was actually a question ive been wondering for a long time lol

    Nina PNina PPirms Mēneša
  • Don’t ask why I clicked on this video....

    Ken AllenKen AllenPirms Mēneša
  • Like its useful for people who dont understand this easily, but once u understand, its boring

    Ruben van MaanenRuben van MaanenPirms Mēneša
  • Do this again plsss

    Ruben van MaanenRuben van MaanenPirms Mēneša
  • e

    lan3lan3Pirms Mēneša
  • Put a Democrat in before you flush.

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

    WizMasterTWizMasterTPirms Mēneša
  • unless the elephant is potty trained, i pick the woman

    Pinnacle RoofingPinnacle RoofingPirms Mēneša
  • So this is the science behind cutting implements. Cool.

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

    BeautifulFirefliesBeautifulFirefliesPirms Mēneša
  • Welcome to science class

    Abejero ivan Ivan AbejeroAbejero ivan Ivan AbejeroPirms Mēneša
  • Can yo do more activitys with nature like the squrell course.

    Robert SloanRobert SloanPirms Mēneša
  • I wish my teacher is like you .

    Imman PlayzImman PlayzPirms Mēneša
  • Hes that one teacher that you genuinely get sad when he yells at you

    BoogiemanBoogiemanPirms Mēneša
  • The Super Bowl halftime flush

    Coach WilsonCoach WilsonPirms Mēneša
  • hi

    Dima MuraDima MuraPirms Mēneša
  • Ah yes the Moment when you jump put of a Parachute

    ypr figthypr figthPirms Mēneša
  • All the sewer workers would be drowned!

    Colin RichardsColin RichardsPirms Mēneša
  • 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).

    Adeum DeusAdeum DeusPirms Mēneša
  • the best phy teacher

    ayub ahmedayub ahmedPirms Mēneša
  • 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!

    Quazie WabbitQuazie WabbitPirms Mēneša
  • 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.

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

    Wrapped GoodsWrapped GoodsPirms Mēneša
  • Zac king skit

    super holasuper holaPirms Mēneša
  • The biggest question here is who did he borrow those heels from?

    Jay BrodieJay BrodiePirms Mēneša
  • So when you get shot, you need to drink water and see if there are any leaks?

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

    M. Thomas BrownM. Thomas BrownPirms Mēneša
  • 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.

    MEMEPirms Mēneša
  • bottom

    Brad JonesBrad JonesPirms Mēneša
  • Mark Rober is keeping me sane tbh

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

    User 5.56User 5.56Pirms 2 Mēnešiem
  • 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.

    Heather McDHeather McDPirms 2 Mēnešiem
  • I would stay in school all week if he was the teacher!

    Lexi AndersonLexi AndersonPirms 2 Mēnešiem
  • 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?

    Man in the ParkMan in the ParkPirms 2 Mēnešiem
  • 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.

    Man in the ParkMan in the ParkPirms 2 Mēnešiem
  • You make me want to become smarter. My brain injury says otherwise.

    XXXDeathByFartsXXXXXXDeathByFartsXXXPirms 2 Mēnešiem
  • if only my science class was like this.

    linoslovelylinoslovelyPirms 2 Mēnešiem
  • What if the sewer got full

    Julian ThurmesJulian ThurmesPirms 2 Mēnešiem
  • Oh kay! Live is never perfect. You handled it perfectly.

    John WayneJohn WaynePirms 2 Mēnešiem