How Does the Earth Move? Crash Course Geography #5

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Today, we're going to talk about how the Earth moves, but to do that, we're going to have to go way back to the early days of the galaxy! Processes that happened before the Earth even formed have led us to the geographic patterns and processes that create Earth's environments and support all living things. We'll talk about how the Earth rotates, the effects of it being slightly tilted, how events like sea ice melting impact how the Earth wobbles, and of course talk about how our elliptical orbit gives us seasons. So many of our life decisions are influenced by the motion of Earth. It guides where we decide to live, what food we eat, or even what weather we experience - which we'll talk about more next time.
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#CrashCourse #Geography

Опубликовано:

2 июн 2024

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Комментарии : 130

@MargaritaMilidakis 3 года назад

Being a scientist and being asked by the kid you are babysitting this kind of questions... Best days of my life!

@zackhicks2433 3 года назад

The visualizations of the planet revolving around the sun, along with the accompanying narration, was really helpful for my understanding of the processes - i.e, seasons and the earth's wobble. Before the video, I had a fuzzy understanding. I now see why these concepts make sense. An excellent video!

@KayneWalshNZ 3 года назад

Her passion shines through so strongly. Keeps me ingauged and smiling! 😁

@ColMcWillis 3 года назад

Its a little bit of a misunderstanding that the solstice is the "peak of summer/winter". The peak is often interpreted as the most extreme of the season but that weather typically trails behind the solstice by 4-6 weeks as the time with increased/reduced sun increases/decreases the temperature. The solstice is indeed the shortest day of the year and the longest day of the year outside of the tropics of cancer/capricorn, just not the hottest/coldest day

@eelkev.8547 3 года назад

Your childhood sounds idyllic! I mean living in a house around an oak tree?!!?!

@HugoFauzi 3 года назад

I know! So many kids growing in a tiny apartment in a giant and noisy city nowadays.

@ichdieLivi 3 года назад

30 yrs old, watching this vid while of course knowing all this, still thinking: " wooooooow, this is so amazing!!"

@TWX1138 3 года назад

I feel the Earth... move... under my feet... I feel the sky tum-bul-ing down, tum-bul-ling dooown, tumbling down...

@SuperManning11 3 года назад

Fantastic series!! Love the presenter. She is an excellent teacher

@johnwalters1341 3 года назад

The 23h 56m period is the siderial day, that is, the time it takes the earth to rotate 360 degrees relative to the stars. Since the earth is continuing to move around its orbit, it takes another 4 minutes for it to make 360 degrees relative to the sun, which is the solar day--the one you read on your clock.

@kawafahra 3 года назад

Ballistics !

@RoulDukeGonzo 3 года назад

Vsauce? ;-)

@radagastwiz 3 года назад

Hopefully the precession will continue to proceed according to precedent.

@manimaadithottam 3 года назад

I love this series along with Organic Chemistry. Two of my favorites ❤️

@Grassy_Gnoll 3 года назад

What keeps the planet spinning? Ah ah A force from the beginning! - Daft Punk

@CradilyBestPokemon 3 года назад

To future students studying, good luck.

@learningsimplyvideos 3 года назад

I love how you guys make these videos that get everyone’s attention! We are big fans!

@urmilagarg9948 12 дней назад

I love this teacher! Thanksssss so muchhhh!!!!!❤❤❤❤

@djgautz 3 года назад

1:01 Nice That's Canmore's 3 Sisters mountain, such a beautiful icon and awesome place to see !

@Zavstar 3 года назад

We are incredibly lucky to have life here

@anuradharanasinghe1901 3 года назад

Now I need you to show me your actual house. It sounds pretty cool to have a house on a tree.

@zuzanna229 3 года назад

This video was improve me thank you !

@zoem2121 3 месяца назад

6:09 im watching this on a leap day!

@unappropadope 3 года назад

those monstera ear rings are so great

@slajak94 3 года назад

God I love this. I always hated geography at school, with having to memorize lists of capitals and all that. This I love! Putting everything in context so it makes sense, and all that. Brilliant, thank you!

@sathanimations1457 3 года назад

3:25 CHOM CHOMS?

@geoffreywinn4031 3 года назад

Educational!

@shmooveyea 3 года назад

You think squirrels and ants are a problem with Oaks in autumn??? Armillaria mellea enters the chat.

@just_a_turtle_chad 3 года назад

A turtle approved this informational video

@user-ly8ei2gf1i 3 года назад

So good

@ramehtag 4 месяца назад

Thanks

@diego-rwix 3 года назад

2.05 A bunch of gas in space, but it getting closer together... and it is getting closer together... and it is getting closer together, it's a STAR.

@femto2 3 года назад

I understand that reference

@dhindaravrel8712 3 года назад

You described my dream home.

@MH6M 3 года назад

God I love this channel!

@JimFortune 3 года назад

Wait a minute! Isn't the cheetah also traveling at the speed of the earth?

@muhammad.hameem 3 года назад

She is talking about cheetah at poles

@SineEyed 3 года назад

Yes. But only when it's sitting still. 😉 Hmm... actually... technically, I guess we could also say it moves at the same speed of the earth if it happened to be traveling precisely due north or due south. But if the animal is moving in any other direction, at any other velocity besides 0m/s then it is no going the same speed as the earth anymore. My intuition tells me that you already know all this though.. 😋

@ShieldAre 3 года назад

For those wondering: "A day" in normal usage means 24 hours. A day as an unit measurement is exactly 24 hours. A "civil day" in a sort of bureaucratic sense is 24 hours plus or minus a second or two whenever we have a leap second to match changes in Earth's rotation. The time from a noon to a noon, a solar day, is 24 hours give or take a few seconds, and for obvious practical reasons this is what we mean by day in the normal sense. The sidereal time, ie. the actual time it takes for Earth to fully spin once, is about 23 hours and 56 minutes. The difference between the two is because during each day, Earth advances on its orbit around the Sun, so the next noon will always comes slightly before Earth has actually spun around a full rotation. There's also something called a stellar day, but this is almost exactly the same as the sidereal day. Sounds complicated, but important difference here is between a day, 24 hours, and a full rotation of the Earth, which is 23 hours, 56 minutes and about 4 seconds.

@CesarIsaacPerez 3 года назад

Awesome!!! Also you grew up in a weird house with a lot of extra chores. But it sounded cool.

@shootingstars2127 3 года назад

Does the rotation also affect what goes on inside the earth?

@artfulkakapo3288 3 года назад

Love me some Geography

@Ullmannite 3 года назад

Cool cool, but when is CrashCourse Geology coming?

@eelkev.8547 3 года назад

Yes!! I’ve asked for it many times!

@sfranz5413 3 года назад

Geology rocks, but geography is where it's at!

@mosquitobight 3 года назад

@@sfranz5413 Geography applies to this Earth, geology applies to every body that's made of rock.

@vaughnjohnson8767 3 года назад

No, Crash course History of sports guys, we were teased it in European History

@ranjithvenkat4410 3 года назад

nice...

@huahuahua280 Год назад

wooow! didnt know the earth wobbled :")

@ajayamirthaprakash1353 3 года назад

When will Crash Course Maths be a thing?

@brine1986 3 года назад

Watching this video from St.Petersburg

@TheUglyGnome 3 года назад

♫ I feel The Earth move under my feet ♪

@nathanmckenzie904 3 года назад

Find fact, my girlfriend is born on the Winter Solstice and her sister was born on the summer Solstice

@konpalpatni4704 3 года назад

I accidentally got enrolled in Geography for Undergraduation due to a messed up system of cut offs in India's central university and just hated it... but now am realising how misplaced my anger was and that its such a lovely subject and i couldn't have had this epiphany at a better time since now i get to follow this series like a TV show in real time!

@scotthendricks5665 3 года назад

"First official day of Fall in the southern hemisphere". The australian Bureau of Meteorology would disagree. The Australian government says the seasons are. Summer 1 Dec - 28/9 Feb Autumn 1 March - May 30 Winter 1 June - Aug 31. Spring 1 Sept - 30 Nov.

@julnyasenpai8856 3 года назад

very interesting

@lidellynsarion5590 4 месяца назад

Pov, your teacher lonked this as homework😂

@justinlopas64 3 года назад

Uploaded 11 seconds ago. Wow I'm early.

@astroboy314 3 года назад

1:01 Canmore, Alberta, Canada 🇨🇦

@lhfirex 3 года назад

The Earth wobbles based on how much water it has? So if it's really wobbly, the other planets are all going to say "Oh no, looks like Earth is drunk again." and they'll be right!

@amehak1922 3 года назад

Love these videos And you're so cute

@karid9041 3 года назад

I love listening to Alize talk. Also, sorry. My keyboard won't let me type your name right.

@tuberville3725 3 года назад

im only here because i remembered watching this in class one time and decided to revisit it

@star-cm2ei 3 года назад

6:40 NASA Orrery ♡

@StudyWaliClass 3 года назад

wow

@eStalker42 3 года назад

7:05 - what place?

@feynstein1004 3 года назад

-Inconsistently -Fair enough!

@Etrehumain123 3 года назад

Well, it's all about "what is movement", because very fast you realize everything moves

@RoulDukeGonzo 3 года назад

10:00 wah?

@augijyotbali2131 3 года назад

Wow geography nis interests!

@brainstormingsharing1309 3 года назад

👍👍👍👍👍👍👍👍👍

@MrCommanderPaul 3 года назад

Great Impala joke!!

@gmsherry1953 3 года назад

6:15 Earth''s orbit is elliptical *with the sun at one focus* . It took a second for me to remember that. If the sun was at the center of the ellipse (where the axes intersect), then the perihelion and aphelion would be 3 months apart but ... because distance from the sun doesn't affect anything, we'd never know the difference? 9:55 If the earth didn't rotate, i.e. spin, at all, then a day would be the same length as a year? One side would be very hot and one very cold *at any given time* , but the zone of heat and cold would move around the earth once a year? If the earth were tidally locked, so one side was always facing the sun and the other side always facing away, then it would rotate once a year? 10:00 But, if the earth rotated but didn't revolve -- hung in space spinning but not moving around the sun -- wow, that's hard to picture. It'd be like one particular day of the calendar forever, wouldn't it? So when you said "the length of a day would remain fixed," you meant the length of *daylight* would remain fixed for each latitude, right? The length of a *day* (one noon to the next) remains fixed anyway, or very close. Note 1: The actual circle of illumination (the line between light and dark) is called the terminator, right? Sunrise and sunset will both ve vaack. Note 2: You correctly stated that for the earth to spin once on its axis takes less than a day, but didn't explain why -- solar vs. sidereal day -- extra rotation needed for noon to catch up with the earth's travel in its orbit. I wonder if any of this is right.

@dsagent 3 года назад

What if everyone just pushes really hard?

@collinbarker 3 года назад

Off of what? All action produces an equal and opposite reaction

@danstinson7687 3 года назад

Imaginary axis!?!

@boterlettersukkel 3 года назад

Want claim there is a big pin through the earth???

@perkeyser2032 7 месяцев назад

The earth ISN'T spinning 1600mph. It's spinning 15 degrees per hour. Mph isn't used to measure rotation.

@JimCullen 3 года назад

Sorry, but 9:05 "[March 21] is the first official day of fall in the southern hemisphere" no it isn't. Here in Australia the first official day of autumn is 1 March. We don't use equinoxes and solstices (which, as you said about 30 seconds earlier, are the *peak* of their respective seasons) as the _start_ date for the season. That doesn't even make sense.

@DivineGames1 3 года назад

I miss this is middle school

@aliyuharunamuhammad6190 3 года назад

Thank u 💯 But can u ask you something?

@thestartandend 3 года назад

Please do a video on tropical cyclones

@pasticcinideliziosi1259 3 года назад

actually if the cheetah was running in the direction of the rotation of the earth on the line of equator it would go faster than every human

@HaveRandomQuestions 3 года назад

someones a waving inflatable tube man today

@walderfrey3271 3 года назад

The earth moves... under my feet

@roundtuit2587 3 года назад

Does that mean the Southern Hemisphere has hotter summers and warmer winters?

@fatalmystic 3 года назад

Regarding the tilt, it would mean warmer summers but colder winters for the southern hemisphere. But the dynamic of oceans and continents plays a huge role in how hot/cold it actually gets.

@christopherharrison9039 3 года назад

The Library movement!

3 года назад

So, GEO literally means Earth and it took you fellas 5 episodes to actually get to it? You know, I think I like this channel.

@ririismimi4857 3 года назад

I also want to live in a tree😍 I envy her. The place I live is so noisy. 😭

@rparl 3 года назад

We had a tree growing through part of our house. Eventually it had to go.

@DrSardonicus 3 года назад

Why do we always stop there. Why not continue to talk about how the earth moves WITH the Sun through space and the Galaxy itself. So add another plane of dimension and imagine that the ‘flat disc’ we imagine is spinning around the sun is actually a 3D spiral as the entire solar system FOLLOWS the sun through space. We’re not simply stationary rotating around the sun on a flat ‘disc’. I remember Michael from Vsauce doing it a while ago and it was a wonder visualisation (and realisation) that there’s so so much more to it that the rotation of the planet, the tilt, the wobble and the solar orbit; but ALSO much more! We’re *spiralling* not orbiting. Like a corkscrew.

@crimson90 3 года назад

Aphelion = app-helion, not uh-feelion

@boterlettersukkel 3 года назад

OYG.. you going to get a lot of dislikes from flerfs.

@stza16 3 года назад

My dad moved away to live in a house tree with monkeys

@saimeraversestudios9644 3 года назад

Will we crash to our furnitures if we jumped in our house and our speed suddenly stopped to 0m/s and will the rotation of the earth make us crash into our furniture?

@TomorrowsDan 3 года назад

Maybe at one point the moon was covered in water and spun in between the earth and the sun creating a water barrier and then (for some reason) the water was made to be knocked off the moon onto the earth causing the earth to tilt and wobble on its access with the added weight of the moon water leaving us where we are today? Maybe? Just me? Lol ok bye

@pranjalkohli183 3 года назад

@KirillRedGreen 3 года назад

Thanks for putting in some pictures of Russia here and there throughout your episodes. It's kind of unexpected but pleasant to see familiar landscapes)

@phoenixshadow6633 3 года назад

Last time I was this early, the Greeks were still using epicycles to describe the movement of Earth and the heavens.

@6teezkid 3 года назад

Yes!! The Earth changes! Even it’s climate! Same as the solar system changes, as our Galaxy changes, as our Universe change AND POSSIBLY as other universes do. Everything drastically changes. Our climate on our world must change or all life would be doomed.

@shusgaming5569 3 года назад

First comment

@maddieg8339 3 года назад

I’m here bc hank green tiktok

@annotatedmedicaltutorials858 3 года назад

oh, the earth moves at a pace exceedly faster than that of the fastest cheater. waal

@warmachineuk 3 года назад

I'm disappointed by the lack of flat Earthers.

@vaughnjohnson8767 3 года назад

And wrong about the cheetah being slower. (I’m not considering how you used the cheetah as a reference point. Don’t get mad at me) technically the cheetah running the same way as the spin of the earth at the equator is going even faster than the earth. But only technically

@chrisgreece732 3 года назад

Lol

@Exclusively96 Год назад

Bananas

@Silent_Ivan 3 года назад

Oof

@phoebenatividad7708 3 года назад

First lol

@marcelohenrique1040 3 года назад

First?

@marcelohenrique1040 3 года назад

Sorry for this, I'm so excited for a new episodeeeeeeeeee!!!

@francesvonstackelberg4070 3 года назад

Wait wait wait. The earth's rotation is offset from one entire day by almost 4 minutes? That's an entire 24 hours after 360 days?! That ... that means something, why aren't we talking about this? 😱