SCIENCE CLASS #1- WHY Does Helium Make Your Voice Higher?

Live stream with demos your brain will enjoy where we answer a basic question every time.
Does farting make you weigh more or less?!?! Place your guess and give me feedback too-

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    Mark RoberMark Rober14 ngày trước
    • 👍

      Unicorn Butt faceUnicorn Butt face12 ngày trước
    • So

      Érika MatteauÉrika Matteau12 ngày trước
    • I´m

      Érika MatteauÉrika Matteau12 ngày trước
    • Up

      Érika MatteauÉrika Matteau12 ngày trước
    • *give

      Érika MatteauÉrika Matteau12 ngày trước
  • my mind just e x p a n d e d

    AlleyViper 08AlleyViper 0811 giờ trước
  • Mark: having trouble lifting 25lb weight My mind: Mark, do you remember your mouse trap video? Use leverage to lift it! Also, the world's strongest man could lift that with his pinky toe

    Alex GoldenAlex Golden13 giờ trước

    Tiko Is CuteTiko Is Cute17 giờ trước
  • Wow nice job man

    Logan JenningsLogan Jennings19 giờ trước
  • do you guys think mark ill be an easy marker as a teacher?

    no oneno oneNgày trước
  • ten minutes in still rambling. not sure what he is hopped up on. quality is really going downhill

    ieatyomamaieatyomamaNgày trước
  • He would be the best teacher.

    smarten your mindsmarten your mindNgày trước
  • Hi

  • Schools close: Mark Rober: Allow me to introduce myself.

    Electrofizz __Electrofizz __Ngày trước
  • C'mon public is not that bad.

    Stefan MashchitsStefan MashchitsNgày trước
  • Sound doesn’t travel through air like waves travel through water. Sound waves are longitudinal waves while water waves are transverse. Im sure Mark knows that, it’s just diving deeper into something off topic and that takes up more time lol. But my nerdy self had to point that out.😅 Edit: yup he knows

    Erbium99Erbium99Ngày trước
  • Last I checked 15+5=20 not 35

    soupysoupyNgày trước
  • I love this

    SharonSharonNgày trước
  • Air is a fluid! 🤯🙌

    r@munyar@munya2 ngày trước
  • Thanks Mark 👊🏽

    Abdul MalikAbdul Malik2 ngày trước

    Christian HornerChristian Horner2 ngày trước
  • This was the most interesting, entertaining Physics class I've ever been in

    Jayden TanJayden Tan2 ngày trước
  • <a href="#" class="seekto" data-time="603">10:03</a> Oil is heavier than water??? I thought it's the opposite.

    Henry WuHenry Wu2 ngày trước
  • Mark please come teach at my school oh my god. We have like 3 physics teachers, all of whom I’ve heard a lot of complaints about. One does AP and honors and I failed out of her class because I never understood material when she taught it, the other two I don’t know personally, but many of my friends complain about the work and not understanding, and honestly I think most of us hate physics.

    Hannah BloomHannah Bloom2 ngày trước
  • Awee you have nothing to worry about with public speaking. You did amazing. Bonus: you kept me more engaged than my professors

    Sydney ElmerSydney Elmer2 ngày trước
  • I’m watch videos on youtube 1,75 faster than normal and it’s fascinating how I can explain why the sound is more acute than at normal speed with what you explained.

    Benjamin BrassardBenjamin Brassard2 ngày trước
  • When you’re a bio major in college and your awesome 12 year old nephew (who also loves science) shares this video. Subscribe button hit ✅

    Sana BatolSana Batol2 ngày trước
  • In case you didnt know, it was live

    Isaiah TrujilloIsaiah Trujillo2 ngày trước
  • Wish he was my actual teacher

    Darren Tan AKA SubSamurott NekoDarren Tan AKA SubSamurott Neko2 ngày trước
  • <a href="#" class="seekto" data-time="1048">17:28</a> “freedom units”? That’s a strange thing to call an Old English style of unit of length, as opposed to the kilometre that emerged from the French Revolution. :p

    Shaun JShaun J2 ngày trước
  • Imagine Mark being your physics teacher, i feel that he would make any science class super interesting.

    Epic PlaylistsEpic Playlists2 ngày trước
  • Mark Rober Is A S.I.M.P.

    Quinn SamsQuinn Sams2 ngày trước
  • the magic did not work

    Mr RuffinsMr Ruffins2 ngày trước
  • Hey mark where can I get that skeletor shirt.

    First LastFirst Last2 ngày trước
  • you look nervous. That's cool, you get a like

    HCarotaHCarota2 ngày trước
  • <a href="#" class="seekto" data-time="138">2:18</a> he went from a nasa man to a youtuber to a teacher

    shrimpshrimp3 ngày trước
  • I take more notes on this than in class

    mari uwumari uwu3 ngày trước
  • I am 11 and you are good at teching

    Mj VogtMj Vogt3 ngày trước
  • First time ever doing a live show hey guys this is terrifying:)

    Danny LinDanny Lin3 ngày trước
  • Mark Rober or Mars Rover?

    DJPEASCRAM 66DJPEASCRAM 663 ngày trước
  • now everything i hear i over analyze lmao. i just called my friend to tell him and i kept thinking about the ringer

    Colton GibsonColton Gibson3 ngày trước
  • Just to explain how well he explains those psychics things: I am 13 and havent done this subject yet ,and I UNDERSTOOD IT english is my second languages,and I UNDERSTOOD IT

    Jayman ManJayman Man3 ngày trước
  • The Big Bang never happened

    Joshua PopovJoshua Popov3 ngày trước
  • I would go back to whatever school he will teach and do attendance 100%

    nhi phannhi phan3 ngày trước

    Cassia IsabellaCassia Isabella4 ngày trước
  • Ok, but why does helium make you faint, if you inhale so much?

    SammyBoi Is BestSammyBoi Is Best4 ngày trước
  • <a href="#" class="seekto" data-time="4">0:04</a> pause at that moment and think about what u have done

    _ PUNISHER __ PUNISHER _4 ngày trước
  • I see a solid foundation of a future teacher in the making!

    Stacy PlottsStacy Plotts4 ngày trước
  • I’m always going to watch this

    TylersfarTylersfar4 ngày trước
  • Now this is what I call education all the science channels I watch have taught me more that I've ever learned in school

    Savage LeagueSavage League4 ngày trước
  • At <a href="#" class="seekto" data-time="187">3:07</a> listen to his voice

    L4W4NDL4W4ND4 ngày trước
  • I don’t know why but the way he dresses, like with the hat and suit jacket thingy, reminds me so much of Cisco from Flash

    Chloe SandersChloe Sanders4 ngày trước
  • The 1k who disliked this vid hate on of these: School Physics VIproject Life Science you see that I didn’t put Mark Rober. No one can hate him

    Rebecca AlexanderRebecca Alexander4 ngày trước
  • I want you as my high school physics teacher

    Rebecca AlexanderRebecca Alexander4 ngày trước
  • Best teacher we could have

    rcvidu-rcvidu-4 ngày trước
  • I use SF6 for W etching in a nano fabrication cleanroom facility. Don't remember the MSDS saying is could be inhaled :)

    AshAsh4 ngày trước
  • this is AWESOME!!

    Liam FosterLiam Foster4 ngày trước
  • Love the explanation of traveling sound. This is why there’s no sound in outer space!!

    Austin JacksonAustin Jackson4 ngày trước
  • Are you still livestreaming?

    AltidudesAltidudes4 ngày trước
  • As a middle school Science teacher. Got to say - love this! Thank you.

    Terri GriffithTerri Griffith5 ngày trước
  • do why is water wet

    David CusackDavid Cusack5 ngày trước
  • Mark’s upload schedule before Coronavirus: Once a month Mark’s upload schedule now: Multiple videos in a month

    The Real BenjaminThe Real Benjamin5 ngày trước
  • Sooooo... I don't know about your conclusion. ◸ ◹ A test: *you'll need a highspeed camera and an airtight box filled with the different mediums* Tap a tuning fork within the medium. ◺ ◿ Look at how quickly the tuning fork vibrates in each medium. Get another trillion views. Sound travels faster in helium than in "air" (the mixture of [mostly] nitrogen and oxygen we normally breathe). The velocity (v) of a sound wave is equal to its wavelength (λ) multiplied by its frequency (f), v = fλ. The speed of sound in normal air is ~345 meters per second. In helium that speed is ~1007 meters per second, and ~134 meters per second for sulfur hexafluoride. My hypothesis: Your vocal cords aren't moving faster or slower -- the frequency of your vocal cords' motion stays the same -- the energy transmitted from the vibrating vocal cords is being applied to the different mediums. This changes the speed of the sound wave. By changing the medium (the atmosphere) a sound wave travels faster or slower. The frequency of the vocal cords' motion remains unchanged, but the speed the waves are carried away through the various mediums do. I love your work.

    LifeAsANounLifeAsANoun5 ngày trước
  • Great job Teach’

    Mombie ChroniclesMombie Chronicles5 ngày trước
  • Mark:I am doing what i can Everyone: this is better than regular science class

    Jeremy HatchJeremy Hatch5 ngày trước
  • That’s a Skelator shiirrrrrttt!!!!

    Daniel MiddletonDaniel Middleton5 ngày trước
  • Thanks Mark Rober, you're keeping me sane

    Kerry fyiKerry fyi5 ngày trước
  • farting does help you loose weight

    Matty kMatty k5 ngày trước
  • the corona viris is stinky

    Dali BrabecDali Brabec5 ngày trước
  • i was NOT prepared for that giant air horn ....

    Rhiannyn ReynoldsRhiannyn Reynolds5 ngày trước
  • You missed the opportunity to say 'ma in the chat' instead of 'F in the chat' because F=ma

    JacinthJacinth5 ngày trước
  • <a href="#" class="seekto" data-time="80">1:20</a> 👌

    mrn. gr.mrn. gr.5 ngày trước
  • I move that the Imperial Measuring System heretofore be renamed "Freedom Units"

    Rodney BentleyRodney Bentley5 ngày trước
  • He was so nervous and kept bringing up this is live.

    Shattering DiamondShattering Diamond5 ngày trước
  • come on mark give me a shout out pls

    Crue Bundy OutdoorsCrue Bundy Outdoors5 ngày trước
  • Insta-subbed. The presentation here is extraordinary.

    Samuel ThompsonSamuel Thompson5 ngày trước
  • This is a kind of back handed compliment, you come across so much better live, I used to find you a bit to cocky, but live you're humble self shines through.

    Jim hobbsJim hobbs6 ngày trước
  • Who else thought that the first 5 seconds were in slow motion

  • I don't think God created the universe like that

    Samuel SimonsSamuel Simons6 ngày trước
  • Hey Mark can you make a video on the world's lightest solid

    Raagul Suresh BabuRaagul Suresh Babu6 ngày trước
  • that's literally the best explanation i've ever heard keep up the good work my guy

    Cristi MacoveiCristi Macovei6 ngày trước
  • I Show my teacher dis

    andrew calhounandrew calhoun6 ngày trước
  • I have always wanted a science teacher like you I am a middle schooler

    TysenTJF !TysenTJF !6 ngày trước
  • The next Eddie Woo

    DJ 44455DJ 444556 ngày trước