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

15 673
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-
узактыгы: 35:27


Mark Rober
Mark Rober - 12 күн мурун
Unicorn Butt face
Unicorn Butt face - 11 күн мурун
Érika Matteau
Érika Matteau - 11 күн мурун
Érika Matteau
Érika Matteau - 11 күн мурун
Érika Matteau
Érika Matteau - 11 күн мурун
Érika Matteau
Érika Matteau - 11 күн мурун
no one
no one - Саат мурун
do you guys think mark ill be an easy marker as a teacher?
ieatyomama - 6 саат мурун
ten minutes in still rambling. not sure what he is hopped up on. quality is really going downhill
smarten your mind
smarten your mind - 7 саат мурун
He would be the best teacher.
PRO ROBLOXxX - 8 саат мурун
Electrofizz __
Electrofizz __ - 9 саат мурун
Schools close:
Mark Rober: Allow me to introduce myself.
Stefan Mashchits
Stefan Mashchits - 12 саат мурун
C'mon public is not that bad.
Erbium99 - 12 саат мурун
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
soupy - 12 саат мурун
Last I checked 15+5=20 not 35
Sharon - 12 саат мурун
I love this
r@munya - 15 саат мурун
Air is a fluid! 🤯🙌
Abdul Malik
Abdul Malik - 20 саат мурун
Thanks Mark 👊🏽
Christian Horner
Christian Horner - 20 саат мурун
Jayden Tan
Jayden Tan - 23 саат мурун
This was the most interesting, entertaining Physics class I've ever been in
Henry Wu
Henry Wu - Күн мурун
10:03 Oil is heavier than water??? I thought it's the opposite.
Hannah Bloom
Hannah Bloom - Күн мурун
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.
Sydney Elmer
Sydney Elmer - Күн мурун
Awee you have nothing to worry about with public speaking. You did amazing. Bonus: you kept me more engaged than my professors
Benjamin Brassard
Benjamin Brassard - Күн мурун
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.
Sana Batol
Sana Batol - Күн мурун
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 ✅
Isaiah Trujillo
Isaiah Trujillo - Күн мурун
In case you didnt know, it was live
Darren Tan AKA SubSamurott Neko
Darren Tan AKA SubSamurott Neko - Күн мурун
Wish he was my actual teacher
Shaun J
Shaun J - Күн мурун
17:28 “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
Epic Playlists
Epic Playlists - Күн мурун
Imagine Mark being your physics teacher, i feel that he would make any science class super interesting.
Quinn Sams
Quinn Sams - Күн мурун
Mark Rober Is A S.I.M.P.
Mr Ruffins
Mr Ruffins - Күн мурун
the magic did not work
First Last
First Last - Күн мурун
Hey mark where can I get that skeletor shirt.
HCarota - Күн мурун
you look nervous. That's cool, you get a like
shrimp - Күн мурун
2:18 he went from a nasa man to a youtuber to a teacher
mari uwu
mari uwu - Күн мурун
I take more notes on this than in class
Mj Vogt
Mj Vogt - Күн мурун
I am 11 and you are good at teching
Danny Lin
Danny Lin - Күн мурун
First time ever doing a live show hey guys this is terrifying:)
DJPEASCRAM 66 - Күн мурун
Mark Rober or Mars Rover?
Colton Gibson
Colton Gibson - 2 күн мурун
now everything i hear i over analyze lmao. i just called my friend to tell him and i kept thinking about the ringer
Jayman Man
Jayman Man - 2 күн мурун
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
Joshua Popov
Joshua Popov - 2 күн мурун
The Big Bang never happened
nhi phan
nhi phan - 2 күн мурун
I would go back to whatever school he will teach and do attendance 100%
Cassia Isabella
Cassia Isabella - 2 күн мурун
SammyBoi Is Best
SammyBoi Is Best - 2 күн мурун
Ok, but why does helium make you faint, if you inhale so much?
_ PUNISHER _ - 2 күн мурун
0:04 pause at that moment and think about what u have done
Stacy Plotts
Stacy Plotts - 2 күн мурун
I see a solid foundation of a future teacher in the making!
Tylersfar - 2 күн мурун
I’m always going to watch this
Savage League
Savage League - 3 күн мурун
Now this is what I call education all the science channels I watch have taught me more that I've ever learned in school
L4W4ND - 3 күн мурун
At 3:07 listen to his voice
Chloe Sanders
Chloe Sanders - 3 күн мурун
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
Rebecca Alexander
Rebecca Alexander - 3 күн мурун
The 1k who disliked this vid hate on of these:

you see that I didn’t put Mark Rober. No one can hate him
Rebecca Alexander
Rebecca Alexander - 3 күн мурун
I want you as my high school physics teacher
rcvidu- - 3 күн мурун
Best teacher we could have
Ash - 3 күн мурун
I use SF6 for W etching in a nano fabrication cleanroom facility. Don't remember the MSDS saying is could be inhaled :)
Liam Foster
Liam Foster - 3 күн мурун
this is AWESOME!!
Austin Jackson
Austin Jackson - 3 күн мурун
Love the explanation of traveling sound. This is why there’s no sound in outer space!!
Altidudes - 3 күн мурун
Are you still livestreaming?
Terri Griffith
Terri Griffith - 3 күн мурун
As a middle school Science teacher. Got to say - love this! Thank you.
David Cusack
David Cusack - 3 күн мурун
do why is water wet
The Real Benjamin
The Real Benjamin - 3 күн мурун
Mark’s upload schedule before Coronavirus: Once a month
Mark’s upload schedule now: Multiple videos in a month
LifeAsANoun - 3 күн мурун
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.
Mombie Chronicles
Mombie Chronicles - 3 күн мурун
Great job Teach’
Jeremy Hatch
Jeremy Hatch - 4 күн мурун
Mark:I am doing what i can

Everyone: this is better than regular science class
Daniel Middleton
Daniel Middleton - 4 күн мурун
That’s a Skelator shiirrrrrttt!!!!
Kerry fyi
Kerry fyi - 4 күн мурун
Thanks Mark Rober, you're keeping me sane
Matty k
Matty k - 4 күн мурун
farting does help you loose weight
Dali Brabec
Dali Brabec - 4 күн мурун
the corona viris is stinky
Rhiannyn Reynolds
Rhiannyn Reynolds - 4 күн мурун
i was NOT prepared for that giant air horn ....
Jacinth - 4 күн мурун
You missed the opportunity to say 'ma in the chat' instead of 'F in the chat'
because F=ma
mrn. gr.
mrn. gr. - 4 күн мурун
1:20 👌
Rodney Bentley
Rodney Bentley - 4 күн мурун
I move that the Imperial Measuring System heretofore be renamed "Freedom Units"
Shattering Diamond
Shattering Diamond - 4 күн мурун
He was so nervous and kept bringing up this is live.
Crue Bundy Outdoors
Crue Bundy Outdoors - 4 күн мурун
come on mark give me a shout out pls
Samuel Thompson
Samuel Thompson - 4 күн мурун
Insta-subbed. The presentation here is extraordinary.
Jim hobbs
Jim hobbs - 4 күн мурун
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.
DYLAN PERRY - 4 күн мурун
Who else thought that the first 5 seconds were in slow motion
Samuel Simons
Samuel Simons - 4 күн мурун
I don't think God created the universe like that
Raagul Suresh Babu
Raagul Suresh Babu - 4 күн мурун
Hey Mark can you make a video on the world's lightest solid
Cristi Macovei
Cristi Macovei - 4 күн мурун
that's literally the best explanation i've ever heard
keep up the good work my guy
andrew calhoun
andrew calhoun - 4 күн мурун
I Show my teacher dis
TysenTJF !
TysenTJF ! - 4 күн мурун
I have always wanted a science teacher like you I am a middle schooler
DJ 44455
DJ 44455 - 4 күн мурун
The next Eddie Woo
DannyJ Fedora
DannyJ Fedora - 4 күн мурун
My science teacher put this on our online class. This is the first thing on this. This is the best science class ever.
xX Galaxy Studios Xx
xX Galaxy Studios Xx - 4 күн мурун
I already watch Mr.Beast he is amazing
Breanna Y
Breanna Y - 5 күн мурун
Why does your stomach growl and how can you hear the water in ur stomach when you exercise
Jon Lon
Jon Lon - 5 күн мурун
When a pilot breaks the sound barrier does he/she hear the sonic boom? Also, while traveling faster than the speed of sound does a pilot hear sound from the jet engine?