How Do Tides Work?

[@idkicantthinkofaname5724]

I am drowning at this very moment and someone showed me this video so thanks for informing me on how the tides work and how they are killing me

[@yung__honiii]

ah yes

[@dumblewhoree]

Dead 🤣🤣🤣🤣🤣🤣

[@anshukale3478]

@@dumblewhoree literally, drowning rn

[@jaypetallar7021]

@@yung__honiii I

[@Redeemed_Daughter]

@@yung__honiii "ah! Yes" I'm done🤣

[@bobross8424]

0:21 - 0:27 That went from 0 to 100 real fast their buddy.

[@everettgehman8219]

lol

[@miraaslayy]

I know right

[@cameronvc2630]

😧

[@Walrus_09]

╱╱▏┈┈╱╱╱╱▏╱╱▏ ▇╱▏┈┈▇▇▇╱▏▇╱▏ ▇╱▏▁┈▇╱▇╱▏▇╱▏ ▇╱╱╱▏▇╱▇╱▏▇╱╱ ▇▇▇╱┈▇▇▇╱┈▇▇▇╱

[@Maddsrach]

Me: *at beach* Random man: *is buried deep in sand* Me: *looks at random man buried in sand* Random man: I have lived my life. Now it's time to say good bye... Me:Sir the moon isn't in the right place for a high tide to drown you. Random man: :/

[@madirivas7318]

My science teacher showed me this video and the first sentences had me shook because yes, your first thought as you watch someone drown before your eyes is, "how do tides work," not "do they need help? Do I need to call someone?"

[@katewoodward1366]

Thanks - that was a really great explanation both for me (46 yrs old) and my son who is learning about tides (10 yrs old!)

[@Kibella]

"..as they wait to die."

[@lineage.9213]

@@Kibella no u

[@__J__A__X__]

😂😂😂👌 hahahaha hahahaha,,, hahahaha bullshit 🤣

[@__J__A__X__]

You need to think before you leave comments you sound like a person from the 14th century.

[@kyubii972]

legit ... yes

[@deliabailey7422]

Now I can finally sound like an expert on the tide to a drowning person!

[@drrrck]

This video is actually incorrect. Check out PBS spacetime's video on it to see a corrected version. It is the gravitational pull of the moon, but in an entirely different way.

[@rogueplanet13]

Snitch

[@yoboichris89]

U f U C K. Face u are a boomer

[@WAGNERMJW]

No. Logic failure. Your example of "moon at top creating a high tide at the bottom" with your rationale being that the "earth is pulled away from the water and toward the moon" fails both logic and physics. The southern ocean is not anchored to something so that the earth can be pulled away from it. Whatever gravitational pull the moon has upon the earth it also has on the water such that the water should, can, and does, flow in both physical and density terms, cyclically chasing the source(s) of the extraterrestial gravitational pull in constant marginal distribution of the majority of the oceans volumetrically toward the source (s) of gravitational pull. If there is a high tide on the side opposite the moon then it is due entirely to a gravitational source on that side, or some as yet unknown physical law or power offsetting the moon's influence.

[@lisaburke1045]

An exceptionally well written comment and I absolutely agree with every single eloquent word you typed - thank you. Furthermore, can I politely suggest that this “yet unknown physical law or power” of which you speak is…is…Inertia! Because every stable orbit in the universe requires a barycentre and it is the orbital motion around this common position which is offsetting the gravitational attraction of the moon.

[@KeziahA808]

*Me seeing a guy drowning because of the tide* “I wonder how tides work.”

[@Kibella]

This needs to be a meme. (like count 69)

[@maxeyvisuals]

"And you can explain tides to that person as they wait to die." ....HAHAHAHA

[@filipkovacevic5043]

Fortnite man lol

[@Person_4283]

Where was that line

[@amandaprovines3308]

So, I am creating a D&D campaign based largely underwater, and this is explained in Cerulean Seas. I am a visual learner though and this video helped me to have a better understanding of what I had previously read and was unable to comprehend. So, thanks. :)

[@terencecleric1813]

Amazing! Every words you just said: was wrong. The tidal forces are not pulling, but pushing forces. Imagine gravity as a tube formed packing net with two oranges inside the tube, on different ends. The tubular packing net symbolizes the gravity. When you pull the net, it will trying to squeeze the orange inside, the tidal forces are working this way. The Moon's gravitational force squeezes the facing circumference of the Earth, this causes rising ocean on the facing and the opposite side. You also can check the wikipedia, it helps you to understand the tidal forces. Note: tidal forces are working between each masses in the space, they also can shatter an entire celestial body, if the opposing celestial body is massive enough, and the lighter one steps through the heavier one's Roche limit, and no other forces keeps the less massive body together than the gravity.

[@hmulford3779]

How the tides REALLY work kzbin.info/www/bejne/mIHLmYyeg5V5d8U

[@kalicat20]

I've got a question. I know that tummy grumbling is usually a sign oh hunger or an upset stomach, but how does it make those noises?

[@ThursdayMoonn]

I want to. Know that also idk really

[@pepe371]

that your spirit longing to subscribe to pewdiepie

[@diyalakhanpal4114]

@@pepe371 Totally. - _ -

[@pepe371]

@@diyalakhanpal4114 yup 👍

[@obe726]

Tide goes in tide goes out. You CAN explain that

[@tianamik9045]

i'm having a project on tides and this has helped me so much!! thankyou :)

[@PaxPredicate]

This explanation is incorrect, which is disappointing for a channel supposedly dedicated to informing the uninformed. The speaker attempts to explain away the fact that only oceans experience tides despite the fact the moon accelerates everything on earth by claiming this is because all other objects are somehow "anchored" to the earth's surface; this is patently untrue (and clearly absurd when given even a cursory thought - are your shoes nailed to your floorboards?). The true reason for tides is downward acceleration (relative to the earth's acceleration toward the moon) of the segments of the world-ocean that are not directly aligned with the moon; this essentially compresses water at those points. Because the oceans are so enormous, and because they are liquid, this lowering effect is allowed to accumulate on an enormous scale, with huge quantities of water being pushed to the areas with less downward (relative) acceleration. Those areas become high tide, whereas the compressed areas become low tide. There is another excellent video on this already linked by another commenter here; I advise everything to check it out.

[@dillybar8781]

ever heard of i dont know...tectonic plates?

[@FlatOutFE]

Ken VeganFrugahore , do you have ocean temperature measurements to validate your hypothesis that tides coincide with ocean temperature change?

[@FlatOutFE]

Ken VeganFrugahore, science is not "disproving". Science is the generation of verified theory. The best science generates useable tools to make predictions for design and society.

[@FlatOutFE]

Ken VeganFrugahore, except that science made the internet possible that you are using right now. It makes the medical treatments that saves lives possible. Science generated the formulas to calculate the structural requirements for the buildings you live and work in. Science discovered how to fly people around the world at 500mph. It created the lift theories that enabled us to have supersonic controlled flight. It refined the powders in your firearms that you use to protect yourself.

[@FlatOutFE]

Ken VeganFrugahore, I guess we work in different fields. I work in the arena where we are making things and solving problems that other people bring to us. We create new materials and fabrication proceedures. We develope hypothesis, test them, and create predictable techniques that can be used in the future. Science does progress. Modern science is built refined on the knowledge of the past. You think the wright brothers didn't study birds wings to understand wings? You don't think they developed hypothesis and then tested those hypothesis? Thanks for implying that I'm a girl.

[@lolkillermoon]

Thank you so much I passed my science test from this

[@marianmonteagudo2661]

hi

[@ggcgod8147]

Holdldldldldlld uppppp

[@Polymecha]

Thank you for this, it helped me in my project! It's about drowning people and how to save them!

[@LaosPride978]

this really helped me with my science project on tides i get how tides work now thanks so much keep making videos ill subscribe till next time bro

[@BrainStuffShow]

LaosPride978 Glad to hear we could help!

[@donwilli]

Uh, I believe Bill O'Reilly already answered this question. "Tides go in. Tides go out. You can't explain it."

[@GunnerJoe93]

+Don Willi I was scrolling through the comments just to see someone who already posted this! Hilarious!

[@jadew3303]

A Don of Ice and Fire 😂

[@potcha]

While it is a lot of fun to sneer about this, I would note that while you are doing so, you are posting on a youtube video teaching about it. Meaning, it is highly likely that *you* couldn't explain it up until just before you were posting this or giving it a thumbs up. But, by all means, don't let me interrupt a good "woke" circle-jerk.

[@sirius190363]

Potcha Shamans This is explained to 12-year olds in European schools.

[@potcha]

sirius190363 so then, by you being here watching it, we can deduce that you are either 1) under the age of twelve 2) being dishonest 3) someone who stopped going to school before the age of 12 Either way it’s not exactly helpful to your credibility.

[@AMOGHAJAYANTHMK]

So if I keep a glass of water near the seashore, will the water level rise in times of high tides and lowers in time of low tides? Please share your thoughts.

[@Pink09]

Thanks for the simple explanation helped me with my homework

[@DiabolicaLuke]

i liked the fact that you also explained that tidal waves are not related to the tide! fun fact: japanese for tidal wave is...tsunami :)

[@ritukapurkapur5457]

wonderful and very interesting way to teach children something quite complicated becomes so simple for the kids

[@chowderfaceable]

The presentation of this video was superb! Your sense of humor was the icing to the cake. Great job!

[@TLJ1025]

Icing ON the cake* lol

[@anitaojotoro]

@@TLJ1025 with a cherry inside* lol

[@hyperfusion9566]

@@anitaojotorowith a cherry on top*

[@anitaojotoro]

@@hyperfusion9566 That’s really funny! Thanks. Yeah, I know all about cherries *on top* of cakes, but I also know how tide’s actually work. And this *upside* down “tidal” cake, went *stale* 7years ago! Would you like to see a fresh presentation, with a proper sense of humour, with plenty of icing on the cake 🍰 and loads of cherries 🍒 on the top?

[@amalshaikh7719]

HI thank you for making this video this helped me ALOT for my project about the sea

[@maxwang2537]

1:15 I just came from another video and I was amazed by this kind of explanation of the Earth being pulled by the Moon in a ball of water with one bulge, so there are two bulges from the Earth's perspective. Hard to get this point. Why wouldn’t you say, after that, the water ball is attracted again leaving still only one bulge? Totally unconvinced.

[@cybermonkeys]

It’s easy to be ‘atom’ fooled? That guy has been peddling pseudoscience for years. The Earth does not move towards the moon filling up bulges and get tugged away from the ocean! It revolves around a common centre of mass and the tidal forces produced, lead to a bulge on either side.

[@cybermonkeys]

Here! Try this Max: kzbin.info/www/bejne/i6TJcqSbmK-hgdU It certainly helped me understand the problem?

[@maxwang2537]

@@cybermonkeys man that vid is nonsense

[@cybermonkeys]

@@maxwang2537 Max, the message behind that video or read the comments? The sole purpose of that video is to highlight the utter stupidity put forward by videos like the one we’re commenting under here! Any slight movement ‘towards’ the moon would violate the first law of motion if it magically came to an abrupt halt! This video is nonsense and so is the atomic video! That video is explaining why there is no water bubble!

[@maxwang2537]

@@cybermonkeys ok sorry indeed I didn’t finish watching that one. 😂

[@pyzik200]

I have been subscribed to your podcast for what seems like forever. This is the first time I've gotten to put a face to a voice! Why have I never even looked up you guys on youtube?!

[@lokynokey4822]

1) 2.2x more power? Don't you mean force? Force and power are two different things. 2) How is the water going to be pulled by the Moon's gravity if it's force is 30,000 times weaker at the Earth's surface than the Earth's gravity? 3) How can there be a tide at the opposite side because of the Earth being pulled towards the Moon without the water being pulled with it? It would be great if people knew WTF they were talking about.

[@WingedKey]

You're telling me. My science teacher is making us watch this video so we can do this packet thing. At least give us a video that's worth watching Hruby

[@rf123490]

at least you can complain about it...that should make you happy. :)

[@siva9203]

LokyNoKey i was thinking the same.,. can anyone explain this ?

[@NabiL_Lam]

Thanks for explaining still useful video after 7 years

[@jackieremis6533]

Your videos are great. I use them in my science classes. The kids love them

[@barrysmith85]

Thanks Jackie! That makes us really happy to hear!

[@FabioRaimodeOliveira]

Jackie Remis this video has a LOT of incorrect information (and some correct) don’t use it !

[@cherylking9889]

Many thanks for not breaking my brain with this awesome explanation. Clear and succinct.

[@annapaula9983]

Here in the Philippines, Tide is just a detergent🤣🤦

[@glockh4rt602]

Anna Paula Lmao bro, fellow Filipino too!

[@Krone0k]

Lol

[@labyrinthkyle]

Anna Paula amen

[@diyalakhanpal4114]

LMAO really funny bro its true. though tide is a detergent

[@heee302]

In Pakistan too lol

[@laceyriley6363]

My seven-year-old is doing a diorama on the ocean. I'm excited to show this to her, it will help her with explaining how the ocean moves, great job!

[@carolfisher9523]

During an art course, the issue of tides came up. A nature artist creates some of his art on beaches. With time-elapsed video, our class watched as one of his pieces was taken up by the tides and moved into the flow of the water. His work is amazing to look at (Andy Goldsworthy). Thanks for the lesson on tides. It helped me understand something I never really thought about until now.

[@javi6409]

Thanks BrainStuff - HowStuffWorks this is a relly good reference for my HomeWork plus my teachers use this. Thankyou

[@Stardustchild01]

I wonder if this video will blow Bill O'Reilly's mind.

[@simongriffiths1091]

very impressed with the video. I'm a second year Uni student at Plymouth UK studying Ocean science. This video helped reinforce my knowledge thanks ..Simon Griffiths

[@haiggoh]

B-but… Bill O'Reilly said: "Tide goes in, tide goes out, can't explain that!!!" knowyourmeme.com/memes/bill-oreilly-you-cant-explain-that Are you telling me you guys DON'T get your education from Fox News? Otherwise you would know tides can't be explained! ;)

[@tonyblackops]

Dude please take your political garbage and fuck off, nobody's interested.

[@haiggoh]

Tony Rx How is it political, that scene from the O'Reilly factor has become a popular internet meme and it's related to the topic.

[@kingemocut]

Tony Rx the guy was using sarcasm dude xD

[@potcha]

The thing is, even the humor of it is taken out of context. To take it as "LOL bill o riley is a fool, he doesn't even realize we collectively know how tides work" is only the most logical context to take this if you are already pre-disposed to hating him. You are engaging in confirmation bias. A far more logical way to take it, is that, we cannot explain WHY all of this happens. Yes, the sun and moves gravitational pull are doing it, but why do the sun and moon move constantly around the sun? Why is gravity even a thing? Why do we have a moon to begin with? We can't even tie down exactly how our moon was formed. There are a lot of things that can't be explained. How many of you were feeling superior when you heard bill say this, and yet, here you are, learning about it from a youtube video. Meaning 90% of you couldn't explain it regardless of context, while you were sneering.

[@clydefrogzz]

the beginning of the video oh my GOD i am silently thanking my teacher for assigning this video for online school

[@Justin12DeGruy]

Hi im 13 and ireally truly like this video it helped me on my hw.

[@BrainStuffShow]

Awesome!

[@byronmelendez9535]

+justindegruy lol swag

[@contingenceBoston]

He seems like a pretty cool guy, and he doesn't afraid of anything.

[@adrianboulter1906]

why dont we get tides on lakes,only pulls on sea! strange

[@pinkribbon1007]

and other factors so on

[@atomictzar3528]

This is really good information because in school theres a test coming on science coming up and i was sick when my science teacher explained tides and this video helped a lot.

[@31sarm]

that's how waterbenders learn to bend water from the moon.

[@toasbread210]

Lol

[@lineage.9213]

@@toasbread210 fr thats how

[@milesh8332]

It is good for school wprk and it explains everything so well without complicated language

[@delaron9413]

yeah..except its all wrong

[@silolion8411]

that truly helped me

[@Mr0nknown]

Silo Lion Forget it its wrong ;)

[@bjudithbanuelos]

This video really helped me because it's very specific and I now lm pretty sure that lm going to pass my test once again thank you.

[@mouduge]

Great video, thanks! The fact that the Moon has ~2.2x more influence on the tides than the Sun does got me curious. I wanted to make sure I understood where this number comes from so I went back to Newton's law of universal gravitation. And it works! I found a ratio that varies between 1.77 and 2.46 depending on whether the Moon is farthest or closest to the Earth. Newton, my hero! :) If you are interested, here are the calculations. Newton's law of universal gravitation states that the gravitational force F between two masses m1 and m2 is equal to: F = G * m1 * m2 / d² where G is the gravitational constant, and d is the distance between the masses. The gravitational pull exerted by the Moon on the closest side of the Earth is hence greater than that exerted on the opposite side of the Earth. The difference is: D1 = G * m1 * m2 * (1/d² - 1/(d+2*R)²) Where R is the radius of Earth, m1 is the Earth's mass, and m2 is the Moon's mass, and d is the distance between the Earth and the Moon. For the Sun, the result looks pretty much the same, but we replace m2 (mass of the Moon) by m3 (mass of the Sun), and d (distance from Earth to Moon) by D (distance from Earth to Sun): D2 = G * m1 * m3 * (1/D² - 1/(D+2*R)²) The ratio X between these two tidal forces is what we are looking for. We can see that G and m1 cancel out: X = D1 / D2 = m2/m3 * (1/d² - 1/(d+2*R)²) / (1/D² - 1/(D+2*R)²) Now I looked up the masses and distances of the Sun and the Moon, as well as the radius of Earth, and I found this: d=362,600 km m2=7.3477*10^22 kg D=1.496*10^8 km m3=1.98855*10^30 kg R=6371 km Go ahead and calculate X, you should find X = 2.46. That's when the Moon is closest to the Earth. When the Moon is farthest from the Earth, the distance is d = 405,400 km. If you calculate X with that distance, you get X = 1.77.

[@andy021573]

I am a homeschool parent. My daughter is learning about space and the moon right now. We just watched your video on how tides work and we loved it! Thank you! We have subscribed to your channel.

[@MrStevetomas]

A serious question. If the moon has NO gravitional pull, as seen on the moon landing, how can it affect our tides at 384,400 km away ??

[@BrainStuffShow]

+Steve Thomas What about the moon landing indicates that the moon has no gravitational pull?

[@MrStevetomas]

+BrainStuff - HowStuffWorks How does the moon have enough gravitional pull to affect our tides at 384,400 km away ??

[@winkletsdad]

because, while it may be small relative to the earth, it is still a pretty massive object. and since everything with mass has a gravitational pull, its is substantial.

[@tmthychrsty]

+Steve Thomas The moon does have a gravitational pull. If it didn't, astronauts couldn't walk on it. When astronauts hopped around on the moon, the reason they came back down and didn't go flying off into space was because of the moon's gravity.

[@manjuprasadmbasangi7872]

+Steve Thomas itz analogous to the gravitational force exerted on a grain of sand and a big rock

[@dose.of.happiness]

This really helped... thankyou... u r hundred percent right!

[@kiwiandrew17]

Your explanation was not complex but you failed to mention the true complexity of the tides is that they are far more than what you’ve described due to the influence of the continents on the movement of water. kzbin.info/www/bejne/hoStg6yjj5qVgNU

[@jonccole5152]

Just watched the video about the tides. It gave me a better idea on how it works although I know there is much more to it than can be explained in 3 minutes. Also, I thought the instructor was great. He had a easy fun way of teaching

[@ccobian_9304]

Welcome back to best intros

[@meguma]

I thought this would be kid friendly. The drowned man thing was stupid and unnecessary

[@jeontonia2472]

i missed a few of my physics classes. thank for catching me up

[@annaandamelia3456]

WOW! This helped me understand tides a lot more! I love the illustrations! I think I am a visual learner😆

[@lau1st]

Good explaination! first time i understood about tides clearly.

[@brotherbernard9096]

Hate can be a positive thing my friend. I hate this. Thank you and God Bless

[@sukhibisht5683]

This is a myth, their is another better law of causing of tides

[@NidhiSINGH-mq9ct]

Please you don't tell the sir that how to teach

[@abhijithar3336]

Really helpful to understand and store in mind.

[@danny-hl7jq]

"have you ever seen somebody buried up to their neck in sand on the beach and then the tide slowly comes in and they drown"

[@wkproductions6313]

You helped me with a program that we do at our school called science Olympiad

[@annoyingbstard9407]

I’d suggest you’re not qualified to explain anything to anyone if this is your level of misinformation.

[@revdrays4502]

i have a science unit on astronomy and this helped me create a movie project on tides so thank you

[@LamirLakantry]

I still don't understand why there is a tide on the opposite side of the earth to the moon. What force is it that is interacting with the water on the side away from the moon that interferes with the earth's gravitational force on that water? The explanation in the video sound to imply that it is similar to if you have a ball centered on a plate and move the plate, the ball will no longer be in the center. But the earth was never yanked to a different location in this case to cause this. It just rotated, staying in the same place relative to the moon. And if it was, the effect should only be momentary, because the gravity would pull it back again. Instead of a flat plate, the earth would act more like a bowl in the analogy. Please explain.

[@toppa_ash]

earth is being pulled upward by moon but water stays in place underneath therefore high tide underneath/bottom of earth as well

[@LamirLakantry]

Ash T Being pulled upwards? You mean, towards the moon? Why should the earth be pulled closer to the moon? They are in orbit, and in fact moving slowly away from one another, not getting closer. And why would "water stays in place underneath"? I have since read a much more plausible sounding reason for it having to do with the earth-moon barycenter. That it is the centrifugal force of the earth's orbit around the barycenter that causes the high tides on the other side.

[@iagolinscavalcanti2507]

hey,bro! What's up? I will try to explain how it works. But i'm brazilian, and my english is not that good. So, I will write in portuguese, so you can translate, ok? I will show some KEYWORDS to make your work easier (less difficult hehe). Devido à ROTAÇÃO DA TERRA, as águas dos oceanos sofrem uma FORÇA CENTRÍFUGA, fazendo com que estas se desloquem "para fora" da Terra. À medida que se aproxima a LATITUDE até a LINHA DO EQUADOR, essa forças centrífugas se tornam cada vez mais fortes. Além disso, as forças centrífugas apontam para o centro da Terra, enquanto que a FORÇA GRAVITACIONAL DA LUA aponta para a Lua, obviamente. Assim, a Nos pontos que não estão virados par a Lua (é formado um ângulo de 90º entre uma linha que sai da superfície da Terra e uma linha formada entre o centro da Lua e da Terra), a força centrífuga praticamente não existe, enquanto que a força da Lua aponta para a lua, que tem um sentido lateral em relação à Terra - é uma força lateral (considerando a superfície da água), não aponta "para cima" ou "para baixo". Assim, nessas regiões, a influência da Lua é muito fraca nas Marés. No lado da Terra que está virado para a Lua, a força centrífuga da Terra é SOMADA com a FORÇA GRAVITACIONAL DA LUA, pois as duas apontam para fora da Terra (para cima, se você considerar como referência a superfície da água) causando as MARÉS ALTAS nesses locais. Com essas afirmações, você já pode concluir que as marés são diferentes em lugares do mundo diferentes. No lado oposto à Lua, as forças de atração da Lua apontam para ela (para dentro da Terra), e a força centrífuga aponta para fora da Terra. Assim, essas forças são SUBTRAÍDAS. Entretanto, como nesse ponto a Lua está mais DISTANTE, sua força é mais fraca, e possui INTENSIDADE MENOR do que a força centrífuga da Terra. Assim, a força resultante aponta para o lado oposto ao da Lua. Havendo assim MARÉS ALTAS TAMBÉM. Assim, você percebe que as Marés que estão voltadas para a Lua são maiores do que as Marés que estão opostas à Lua. ELAS NÃO SÃO IGUAIS! p.S.: Outras coisas que não foram mostradas nesse vídeo é que, pelo fato de as ÓRBITAS da Lua em relação à Terra e da Terra em relação ao Sol serem ELÍPTICAS, há um ponto que a Terra está mais afastada do Sol (AFÉLIO), e que a Terra está mais próxima ao Sol (PERIHÉLIO). No Afélio, as marés são mais baixas, enquantos que no Perihélio, as marés são mais altas. Da mesma forma, quando a Lua está mais distante da Terra (APOGEU) as marés são menores, enquanto que quando a Lua está mais próxima à Terra (PERIGEU) as marés são maiores. Assim, há um momento em que são produzidas as marés mais poderosas! Quando a Terra, a Lua e o Sol estão alinhados, e quando a distância entre a Terra e o Sol e a Lua e a Terra são mínimas (PERIHÉLIO E PERIGEU), ocorre marés de grande elevação (na MARÉ ALTA), e de grande diminuição (na MARÉ BAIXA).

[@DellHell1]

Ok here goes: imagine the pull of the Moon on the Earth, that force falls off according to the distance from the Moon cubed so the force of the Moon on the closest part of the Earth is much stronger than it is at the centre of the Earth which is stronger still than it is at the far side of the earth. Got that? Now imagine that we on Earth measure the Moons pull relative to the Moons pull value at the centre of the Earth, that is we subtract the value of the Moons pull at the Earths centre from the pull everywhere else. That means we end up with a net pull toward the Moon on the part of the Earth closest to the Moon and a net push away from the moon on the part of the Earth furthest from the Moon. So the water bulge on the opposite side of the earth from the moon is caused because the net force is away from the Moon. Easy eh! If you draw two circles, the Earth and the Moon and you draw some lines of force that decrease in length as you get further way from the moon then you subtract the length of the arrow you drew representing the Moons pull on the centre of the Earth you will have it. By doing this you are effectively performing vector subtraction. So why do this subtraction? Because the net forces are obtained relative to the CofG of the Earth. On Earth we are all pretty much fixed relative to the centre of the Earth ie very little elasticity, but the exception to that are the oceans, they can move relative to the centre of the Earth, and that is exactly what they do. If you imagine that the earth was made completely of some elastic material then it would be oval shaped. Now the same but larger forces apply to the Moon caused by the Earth and those forces have stopped the Moon from rotating relative to the Earth, so we always see the same side of the Moon. (FYI the cubed fall off of force comes from differentiating GMm/r^2, that is to get the rate of change of force with distance, r, from the centre of the moon). By the way the bulges in the oceans stay in the same place relative to the Moons position but the Earth rotates once per day, so the land on the Earth goes through both water bulges per day, hence two high tides and two low tides. Hope that helped.

[@LamirLakantry]

Derek Hillard Oh, I see! Because the total mass of the earth must remain in equilibrium. Just because it's shape changes, it doesn't mean that it's total mass get's closer to the moon. And here I've been thinking in terms of the ocean getting closer to the moon with out considering the equal and opposite effect that requires on the rest of the mass. Am I right? Thank you for explaining though I suck at math, so GMm/r^2 and all that made no sense to me. But does the barycenter of the earth-moon system have any centrifugal effect?

[@yja8224]

Very good explanation! Tks a lot!

[@DCruzRovinDCruz]

But the gravity force of moon is less than that of earth. How can you pull something upwards if the force acting downwards is greater

[@pinkribbon1007]

Rovin Dcruz actually now i look back yup i also don't know why but is probably cause ocean are liquid that gets attracted to strong gravity meaning sensitive to gravity pulls so even a little affects a lot so a little like 0.1×10^-191872 but added up into tides (tides is caused by kzbin.info/www/bejne/pqimmZ5qiJ5sn5Y)

[@gregoriocinco921]

Still both are holding to each other like they are dancing because if not, they would have parted. Consider this, you are pulling your child in a rotating motion while he is also pulling you. Your strengh, of course, is much greater due to the difference in mass. Your child's strengh is lesser but still both of you exert an opposite but equal force. Just because you are heavier does not mean that you are not affected by the mass of your child. I hope this explanation helps. Thank you.

[@tshephard2793]

It's called magic!

[@kingmaro2932]

Thanks for the video learned alot

[@feonor26]

Tide comes in, tide goes out, you can't explain that.......oh wait

[@diyalakhanpal4114]

EXACTLY

[@thedeviants9493]

Excellent you just cleared my confusions at the basic level

[@despacitodaniel801]

0:21 oddly specific

[@ICantFindPeaceOfMind]

now i've learnt the word 'tide' and its meaning forever in my brain... thanks

[@yogibearjohnson5651]

if the reason is from gravitational pull. why does it not affect any other source of water? like lakes, rivers, puddles etc there shouldn't be any difference. its not like gravity is choosing to only pull the oceans

[@mikeknox7453]

+Yogi Bearjohnson It might be the salt. which makes the water more conductive and could be some type of electromagnetic force.

[@yogibearjohnson5651]

+Mike Knox then wouldnt that have something to do with the north and south poles instead of gravity?

[@mikeknox7453]

Yogi Bearjohnson Seems plausible. Earth could be one giant magnet.

[@fergusmcgowan264]

+Yogi Bearjohnson, they are affected by the moon and have tides too, however because the bodies of water being so small in comparison to the great ocean the tides are tiny

[@mikeknox7453]

Fergus Mcgowan This is a little subjective, since it's not actually measured. I'm not even sure if it can be measured. Pretty sure the rise and fall of water levels in large lakes like Lake Superior is attributed to Seiches - a standing wave caused by resonances on the water like meteorological effects. If it was the moon, it would be more predictable.

[@pratyaksh100]

Beautifully explained

[@keiradaniels3799]

im conused, can someone tell me why there is a high tide at the opposite side of the moon!!!!!

[@BrainStuffShow]

Check out this video -- they explained it better: kzbin.info/www/bejne/pqimmZ5qiJ5sn5Y

[@princeofchetarria5375]

Keira Daniels let's say that the water on the side closest to the moon is shifted to high tide by a factor of two. The earth is also moved, but only by a factor of about one, and the water on the far side of the earth (furthest from the moon) is moved by a factor of a half. Therefore on the side closest to the moon, the tide is 1 higher, and on the furthest side, the tide is 1/2 higher. Make any sense?

[@Chartislove]

dear it is due to centrifugal force.

[@hannibal254]

I'm watching this video because a student asked me Keira's question and I felt like my answer was awful :-)

[@diyalakhanpal4114]

@@princeofchetarria5375 thats to confusing

[@americanwar1]

m 16 sir and you are just awesome!! Finally with the diagrams and all concept is good about tides .

[@oafkad]

Have you done a video on how pulleys work [that is, how they reduce the energy needed to lift something]? That is far more biblical magic to me than tides. This video was great, btw.

[@gasser5001]

its the same principle as gears.

[@BrainStuffShow]

We haven't but we'll add it to our master list of topics for future episodes!

[@oafkad]

gasser5001 You've basically met my ignorance with something else I'm ignorant about. I will get around to reading about it also but I like to see videos from charismatic people on this stuff which BrainStuff has in spades. Even as a kid when they told me you could lift incredibly heavy things with a bunch of pulleys in a system I remember thinking it was revolutionary and unbelievable. It came back up in a recent Batman comic because the Riddler was holding up a boulder with a string on his finger that was networked through dozens of pulleys. But I digress. Excited to see it someday ;).

[@garenswarzchenager7614]

Thanks u guys. U were really useful to me. This helped me study for my test on astronomy. Thanks again!

[@soliton4]

why are you introducing the idea the moon would be ontop of the earth, visualizing it with a moon over the northpole. the moon is never ever over the northpole. the tides you drew over the poles will never happen. there are no tides on the poles. this visualization is as you describe it at 2:03 pretty crazy! are you deliberately trying to confuse your audience? the second tide "below" the earth is only described to be happening because the earth is also being pulled. but the moon and earth constantly pull on each other with a constant force. this description raises more questions than it answers. and the ones it does answer are answered in a confusing crazy way not to say wrongly! you can do better!

[@dose.of.happiness]

He is right.. thats a neap tide... where he tried to show the moon on the top of the earth

[@siva9203]

sol correct

[@calirecr]

Quite helpful. I had almost thought that this topic was out of my reach.

[@adarshkumar7238]

Misleading

[@rafaelmolinanavas8862]

Discussing with somebody else (who says only differential gravity counts), I think I found another simpler way to explain tides: Total force exerted on any given particle (because of moon-earth rotation/revolving), has to be equal to the centripetal force required for its revolving, to accomplish Newton´s 2nd Motion Law). The main force “supplier” is moon´s pull AT EACH LOCATION. The other possible forces only can be exerted on each particle by surrounding ones (internal stresses), or by the very gravitational pull from the rest of our planet. Closer to moon particles "feel" stronger pull than required centripetal force. THAT excess (and not any "differential gravity") has to be passed onto the rest of earth through their neighbors. On their turn, those neighbors exert opposite forces back onto considered particle (3rd Newton´s Motion Law). At farther hemisphere interactions are a kind of mirror image of what at closer hemisphere, because the farther the particle, the bigger the deficit of moon´s pull (compared to required centripetal force). That constitutes a complex "chain of transmission", where total force acting on each particle (leaving aside own weight) has to satisfy 2nd Newton´s Motion Law (F=mω²r) ... THAT FIELD OF FORCES, exerted DIRECTLY ON EACH PARTICLE, and the INERTIAL EFFECTS (centrifugal forces included) caused by the fact that all particles are being "forced" to revolve together, ARE ACTUALLY THE DIRECT CAUSE OF TIDES !! Basically solid earth is stretched, and water moves towards where the two bulges build up. None of those forces is "artificial", and all are directly felt by considered particle, what implies "natural" additions of forces, without any artificial intervention of our minds. That would be necessary to deduct moon´s gravitational pulls at locations very distant from each other (the so called “differential gravity”), what obviously material stuff can´t do !!

[@luc00144]

You can't explain that

[@lineage.9213]

No you can

[@brontehart346]

thank you so much i have a science exam today and that helped a lot so thanks again and don`t listen to the hate comments their wrong peace out

[@af952]

"The oceans being literally fluid"🙄

[@minecraftfreak7361]

We watched this video in science class and we couldn't stop laughing when he said "Have you seen someone buried in the sand all the way up to there neck, and then the tide slowly comes in and they drown, and then you ask I wonder how tides work?" (^_^)

[@ThursdayMoonn]

In my mind i was like so ummm is he ok???

[@mitchellernst2722]

tides to not work like that

[@Kamal-xq3cx]

easy and simple clear explaination,

[@fatimaazmitia2292]

too hard I have reached the tomb of Human curiosity :?

[@avocadodaddy3154]

I can relate to this

[@samla6413]

haha whats the life in the underworld like?

[@markpierce3437]

I like this thank you! fun demeanor and very informative!

[@MrTridac]

Oh, come on. Showing the moon ABOVE the earth? With the continents vertical. And then even drawing the tidal bulge north and south? What?

[@soliton4]

the scary part is that this video is mostly being watched by usa citizens who will believe it!

[@orange42]

It makes no sense at all unfortunately. The problem is, someone put it into some school text books and now everyone thinks it's true.

[@NeoDemocedes]

And what about the size of the Earth? It was WAY too tiny. Ants couldn't even live on a planet that small. Now people will start thinking that the Earth is the size of a *basketball*!

[@elizabethnapolilli8425]

I think this video makes understanding tides way easier!! Thank you!! I will be showing classrooms your videos!

[@MrBoostify]

Hopefully Bill O'Reilly is watching...

[@AfzalAmaanFoundation]

Thanks a lot for this wonderful explanation..

[@lisaburke1045]

Not very interesting, just misinformation and the thought or someone drowning, isn’t particularly funny either

[@starwberriez]

you could just choose not to watch if it's not interesting. it was clearly interesting enough for you to leave a comment. also, i hope you feel dumb now because nothing here is misinformation.

[@Trethan3266]

What part was misinformation? I agree this was not a great video tho

[@DikeSauce]

I'm currently taking a college level oceanography class, and you explained this better in 3 minutes then 3 hours of textbook reading. This for doing my homework.

[@TJTJTJ1]

This guys are drugs

[@Little_Chaotic1104]

Yes he is

[@theagamer232]

Thanks! Helped me a lot for my project

[@maucrephy]

Oh shit I'm not wearing shoes......now I'm on the moon, your theory is all wrong btw the moon doesn't pull the water

[@lavkeshlavkeshsingh535]

Simone MP mzuo

[@newstickprodigy]

a bunch of kids were sent here to do an assignment so watch your fucking profanity. i'm joking btw. not about the kids

[@carlathomas6242]

This might not be a tide question, but a wave question? Walking on the beach in Swansea, Wales, the tide started coming in. It was just a slow rush of water, like someone was filling a tub. I compare this to home on the Puget Sound, and the Pacific, where the waves come in in groups of seven, each a little bigger than the last, but they come in and then wash back a bit with each wave. Why does the water behave differently in Swansea??

[@cagedtigersteve]

0:16 to skip the intro

[@billybarnesy9561]

This help me a lot in my studys