Mechanism of The Seasons
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- čas přidán 14. 03. 2011
- Mechanism of The Seasons
The seasons result from the Earth's axis being tilted to its orbital plane; it deviates by an angle of approximately 23.5 degrees. Thus, at any given time during summer or winter, one part of the planet is more directly exposed to the rays of the Sun. This exposure alternates as the Earth revolves in its orbit. Therefore, at any given time, regardless of season, the northern and southern hemispheres experience opposite seasons.
The effect of axis tilt is observable from the change in day length, and altitude of the Sun at noon (the culmination of the Sun), during a year.
Seasonal weather differences between hemispheres are further caused by the elliptical orbit of Earth. Earth reaches perihelion (the point in its orbit closest to the Sun) in January, and it reaches aphelion (farthest point from the Sun) in July. Even though the effect this has on Earth's seasons is minor, it does noticeably soften the northern hemisphere's winters and summers. In the southern hemisphere, the opposite effect is observed.
Seasons result from the yearly revolution of the Earth around the Sun and the tilt of the Earth's axis relative to the plane of revolution. In temperate and polar regions, the seasons are marked by changes in the intensity of sunlight that reaches the Earth's surface, variations of which may cause animals to go into hibernation or to migrate, and plants to be dormant.
During May, June and July, the northern hemisphere is exposed to more direct sunlight because the hemisphere faces the sun. The same is true of the southern hemisphere in November, December and January. It is the tilt of the Earth that causes the Sun to be higher in the sky during the summer months which increases the solar flux. However, due to seasonal lag, June, July and August are the hottest months in the northern hemisphere and December, January and February are the hottest months in the southern hemisphere. - Věda a technologie
Spring Equinox 1:31
Summer Solstice 2:39
Autumn Equinox 3:44
Winter Solstice 4:53
Best explanation ever. Oh, and remember: the angle of the sun decreases towards the poles
Could you shed some 'light' on the effects of the angle of sun?
Did you miss that day when they gave this exact explanation in 4th grade?
Yhuhij
Very nice explanation but at 5:54 North pole and south pole has been changed !
you welcome, my pleasure , glad you found it useful :)
my pleasure, glad you found it useful :)
Kurdistan Planetarium >:/
Flat earthers would die after watching this video
Different angle my foot.If earth is round, how come sunlight be direct and indirect. Remove the poles and just imagine.
@@cbrcbr1061 I like you
@PresentFiction De Silva pffff I'm sorry for you lol
Don't you notice a big mistake with earth's tilt/axe orbiting the sun? Don't you think that when an object has an angle and tilt position, it must be locked and stays at the same angle and position during it's orbit. So the upper or lower side of the earth, always has to stay in the same position towards the sun.......Just try it yourself, face the sun in the supposed position, orbit the sun, keep on facing it....you'll see that the angle never changes....and if it does...you'll have to look with eyes at the back of your head...so the angle must change....what's impossible. lol
@@RV-fg3ml The angle never changes, but at equinoxes the upper part of the globe's axis is indeed not towards the sun nor away from sun, but somewhat parallel with an immaginary vertical plane that cuts the sun sphere in 2 halves. Something like in this crude model i tried to make using mspaint: (i.imgur.com/eka0Iji.png). Also, the static image at the start of this video shows this better than my crude picture. Unless i'm missing something important that is wrong with this model, the heliocentric model does not fail the seasons test.
Best explanation of seasons I have seen yet.
Did you miss that day when they gave this exact explanation in 4th grade?
Not better than the explanation of how TILT kills the globe: *When the tilt is away from the sun, you ascend from dark to light, so the sun MUST appear to descend and set by noon, then rise again until midnight.* czcams.com/video/oQ2kuzX93Gw/video.html no way out of this!
Superb video to develop the understanding of season change and about equinoxes and solstices.
Excellent video. Clearly spoken and explained in an easy to understand way.
This is one of the best, most concise and informative presentations on this subject I have ever seen. Good graphics. Clear language.
Thank you 👏
I'm 20 and I had no idea of this so glad I found this video is really explained everything
Glad you found it useful. my pleasure :)
Same here 😅😅
This is exactly what I was looking for. My sister was having a hard time understanding this concept, so in an effort to help her I was looking for a video. I was just praying that I could find a video exactly like this. Thank you.
Wonderful video ! Very easy to understand !!! Thanks a ton to the makers (Y)
For those wondering why it's 0 degrees during the spring and autumn equinox, the Earth IS still tilted, it's just we're looking at it from the side so we can't see it.
Imagine putting a toothpick through orange and putting it on a table so it tilts. Walk around the table until you can't see the tilt. Same thing here - the earth is still tilted, it's just a matter of perspective.
Richard Muthwill you are wrong
I wonder Why do people always try to justify everything..it's pretty clear that they have not shown any tilt..
@@ayush5275 You know, explaining and justifying are two different things. The angle you're shown is the most instructive one for illustrating the balance between night and day during equinox. That's why they are using it. And read the op again. No claim that a tilt was "shown", so you're debunking a claim that wasn't there in the first place. And in relation to what do you want the tilt shown anyway? The camera maybe? Or the table where you put the model globe? Even if you're not quite there yet when it comes to grasping basic concepts of the solar system mechanics, be it before or after they are patiently explained - a lot of the rest of us are. All you're telling the world is you're struggling to catch up.
Very excellent and simplified explanation. Thanks 🙏 🎉
What a great video! The best about seasons I saw ever.
British accent, great animations, correct facts.This is the best geography video I have ever watched.
what about u. worst person in the world. Ugly and indian accent. lmao
@@lazerblazerytkaza4513 why? Why you telling her such things.....Chill go and read geography don't spare hate...
@@lazerblazerytkaza4513 indian accent is beautiful, you're the one who's wrong here lol
I Slightly understand now, too bad I will have to watch this a million more times to fully understand..... For some reason I have a very hard time retaining information...... Unless it's about cars or video games.
It's a lot easier to understand when you live far north or far south, as you live it all the time.
same here...it's like I understand,but I don't understand....
UofODucks 541 you’re probably a hands on learner
ADHD or Autism
Im confused with the declination as it shows it for the equinoxes and solstices
Thank you for a clear visual of the seasons!!!
Earth Systems class time stamps
Spring Equinox 2:22
Summer Solstice 3:20
Autumn Equinox 4:26
Winter Solstice 5:30
Thank you!
God bless you
Wonderful video, it explained what a week of geography classes wud have.. 🤙👏🤙
cant relate more lol
Excellent. Glad of explanation of equinox tilt. Good job Stanley Roper. Got it in one!
Best explanation I have found so far after watching several videos about this topic!! Thanks you.
Would welcome, glad you found it useful
The best explanation I have seen so far in youtube.
you welcome, glad you found it useful...my pleasure :)
This video is fantastic and easily the best seasons video I've ever seen. Thanks so much!
Thank you for helping us visualize! Truly helpful
Awesome vid :DD
Really detailed and easy to follow!!!
Thanks for the upload~
Done very well, Thanks.
What a simple explanation! Thank for your time.
you welcome...glad you found it useful :)
probably the best seasons video on CZcams.
What a great explanation for entire geography readers in world
Reality that every human should know
I was telling my cousin about how summer and winter happens on earth, and got confused. Then realised i was in delusion for approx 6 years. This video helped me a lot. Nicely explained.👍
happy you found it useful !
Thanks for that. It all makes perfect sense now
I had to watch the video 3 times. Love it
This is a great animation! Just one error. The poles never experience a 12 hour day/night cycle during the equinoxes. They experience one sunrise and one sunset per year during the equinoxes. For example, when we reach the March Equinox, the sun is in the process of rising at the North Pole while it's setting at the South Pole. This phenomenon is reversed during the September Equinox with the sun setting at the North Pole while rising at the South Pole. Unlike most other latitudes moving toward the Equator, the sun doesn't take a curving path in the sky from sunrise to gaining altitude as one advances toward solar noon before losing altitude as sunset approaches. At the poles, the sun takes a circular path in the sky where it remains at the same altitude all day. So during the equinoxes, the sun is right on the horizon (0°) circling around an observer. Between the equinoxes and solstices, the sun either gains or loses altitude as it continues circling around sky. And during the solstices, the sun reaches it's maximum altitude either above (summer) or below (winter) the horizon at 23.5°. This is why the poles experience both 6 months of day during one half of the year and 6 months of night during the other half. Most just don't know because practically no one permanently lives at the poles. Oh and one last thing, the twilight period is very long here compared to the tropics. This is due to the circular path the sun takes here with twilight lasting several weeks both before sunrise and after sunset.
Superb correction -- I thought their video sounded hokey. They should PIN your correction OR redo the video correctly! Weird error. ♡
This is the shit they don’t even teach me in school so I have to find out my self why it’s so cold in winter
Thanx. Best video ever.
Best ever video about seasons✨💯. I spent hours on finding a good video and this vid just answered all my curiousity about tilt and seasons. 💯
Very informative video. Thanks a lot
Nice to understand.
Thank you
Brilliant. There needs to be more stuff like this on CZcams. Still need to watch it a few times for it to sink in though.
Amazing, thanks!
The Best Explanation in Internet so far.
My pleasure, glad you found it useful :)
Thomas I see your point yet you are confusing seasons with climate. Climate is way more complicated as you can also get microclimates. The equatorial seasons are due to the monsoon winds and rain which gives you the wet and dry seasons yet you will also notice the temperature variations are lower throughout the year due to the more consistent hours of daylight and hence solar heating...
its amazing.gives a very clear understanding about seasons
Appreciate the review. Thanks for posting!
Excellent and clear presentation
Happy Summer Solstice 2019
This is very helpful.... After listening it twice everything is byhearted....👍👍
Excellent work
Best video on equinoxes!!
Awesome video. I finally understand. Thanks very much!
If I have a remark though, the close view of the earth during the equinoxes is a bit confusing, because it gives the impression that the earth is tilted back to 0°, because the north pole can't be seen. It should be seen leaning toward us, so we would understand the 23.5° inclination is still the same.
(this could be a response to @azraelblame lower)
This video made more sense in 6 minutes than my astronomy textbook did in a chapter and my professor in a 2.5 hour class
Happy you found it useful :)
Facinating explaination, I always used to think that winter was so cold due to the sun being at is furthest from the Earth on an eliptical rotation around the Sun, but It's mainly due to the number of daylight hours we recieve in every 24hour cycle then as well and maybe secondly because of the angle at which the sun hits us?
Thank you for clearing my concept
you welcome! glad that you found it useful :)
Good for understanding
It's a best explanation video in my list
A lot of great information given in six minutes! Great vid!
Thank you very much !
Excellent!
Thx.for teaching me d topic which i never understood😚😚😚
I learned more stuff from this video than at school
my pleasure, glad you found it useful :)
What a perfect science provide by our earth
Very helpful. Thank you.
At the 5:55 time frame, the North and South poles are identified incorrectly during the Northern Winter Solstice. You show South Pole at the Arctic circle and North Pole at the Antarctic circle. It is shown correctly at the 3:38 time frame during the Northern Summer Solstice.
Wow best explanation 👍👌💥💯
Thank you so much! I didn't understand it anyway else but now I do! :D
#FunFact : The longest night on earth can last up to 50 days.
@MysteriousBook thats a lot
"the overhead sun is over the equator" at the equinox. That's all you need to know to understand it.
Thank you, glad you found it useful, and thanx for giving that link at the end, I am going to check it out !! happy summer solstice 2012 !
Great explanation - thanks
I have a question regarding the spring and Autumn. The video shows the earth inclination to 0 deg.. is this normal. Usually it is 23.5 deg as shown by Summer and winter. Please can you explain. I will really appreciate. The video is great ..
That's what it looks in the video reality Earth Axis is tilted 23.5 degrees all the times, yet on the Equinoxes Earth facing the sun sideways so the sun is overhead in the Equator. Meaning wirh respect to the sun Earth facing straight. Yet with respect to space and celestial pole star Earth is always tilted.
Yousuf Ali Moiz Think of the earth's tilt like a tooth pick going through an orange. (In the video it's that red line piercing through the earth). That tilt does not change as we circle the sun. When our orbit reaches the winter solstice, the bottom tip of the tooth pick is closest to the sun (top tip is farthest). Then we keep orbiting and eventually reach the summer solstice, when the top of the tooth pick is closest to the sun while bottom is furthest. The spring and autumn equinox occur when we're at an equal point between those two extremes. At these middle points, the top and bottom of the tooth picks are at the same distance from the sun. The Earth is still tilted on it's side, it's just that the tooth pick is perpendicular to the sun's rays like T shape.
The reason the video shows it looking like there's no tilt is because from that angle and our viewpoint, the tooth pick is actually tilted towards us (the viewers) which makes it appear to look straight up and down. Does that make sense?
L Klaassy thanks really appreciate, for explaining this
take a glass in your hand resembling the earth, make it tilt and moving around another object resembling the sun. and you will see that in summer and autumn the sun is facing the earth from side not facing the tilted parts.
Such a good explanation. Thank you.
Awesome facts thank U very much
Oh..my..God.. it is very very thankful
Thanks a lot for creative better understanding
you welcome, glad you found it useful !
awh i finally understand :D
Szimi Nagy no why u be rude
you welcome...glad you found the video usuful
my pleausre :)
Very informative video!
Thank you from. Kashmir.
I learned a lot!
thank u very much!!! a great illustration... thumbs-up! :)
Thanks have geography assessment on 8 October
Next week is the Autumn Equinox here in the Northern Hemisphere for Fall of 2020
Yeah in 2 days
That is correct
Australia gonna steal summer from us later.
you welcome ! thanx for the feed back !
Excellent video to explain the seasons.....
Small correction - In the animation at the end of video it's shows South Pole instead of North Pole and vice versa
I have to watch this for my homework and answer 33 questions!!!
Imagine how slow she speaks when you consider the fact that the earth spends 24 hours spinning around itself one time.
This is great :D
Very well explained, thanks
I'm truly amazed at the number of ignorant people here who cannot believe this is how our planet moves around the sun each year. Thank you for explaining so clearly what I wanted to learn! I understand clearly now how our planet gets its seasons. Wonderful.
+Never Ever what the actual..
But God Himself says that the Earth is spherical. It's in Isaiah 40:22. This was originally written in Hebrew. The word used in this language is "ruach" which means sphere, globe, round.
It doesn't matter what NASA & haters of God etc do or say, whether for any agenda or otherwise - we're not fooled if we stick to biblical facts. Gods word is the only reliable guide we have. ♦♦♦
***** Ah, I know what you're saying, but I mean it as in, Gods word is the only reliable guide for us to live by.
Human opinion, advice & standards etc constantly change over time - this isn't reliable. Whereas, Gods doesn't change. ♣♣♣
arriesone1 you are lost in fake space. The earth is flat
*****
Sorry, I've only just seen this comment.
Yes, you are right, the books of the bible were indeed written by around 40 different people. But, these people were directed what to write by God. Similar to when we get a letter from an office, we know it's from who authorised it and not from the secretary - they're just doing their job by typing it out.
In similar vein, God is the actual author of the bible.
Instead of being rude, telling us to learn history & get educated etc, it's better to do a thorough research of a matter before commenting on it and being so quick to insult others. ★★★
thank you very much
best video ever on equinox and solistice!!
Wonderfully explained..
Thank you so much
Schools in general doesn't teach us these in details,
***** How lucky you are
BoyDanny93 then we need to seriously reform our schools.
@@LK-qk8fm they teach but teachers are there only for salary and they don't really care, students just mock and cram up everything without understanding, for getting good scores on exams. its pathetic.
gr8 video....thanku so much
Finally i understood how earth rotates on its axis and around sun. & formation of seasons and length of day&night. Thank you for great video
found so helpfull.thaks a lot......
I have a question. Why didn't you show earth tilted, when explaining eqinox?
freesoul The Earth is still tilted, but since the Sun overhead over the equator it's similar in effect as if the axis is upright facing the sun, from sun's point of view !
+freesoul i don't know you. but i like your question. so i love you. bye!
+Kurdistan Planetarium - You are saying "Spring" and "Autumn" are the same but from the sun's point of view the earth axis can be seen tilted while in "Summer" and "Winter" the earth axis is seen as a vertical line.
Hiko Yagami The right thing is that from Sun's point of view Earth Axis is seen vertical in Spring and Autumn Equinoxes while tilted towards the Sun in Summer and away in Winter Solstices!
- My point was Earth axis "Never" has 90º degrees from Sun's point of view. So Spring and Autumn cannot be the same.
There appears to be an error at 5:50, where the North and South pole are shown reversed. Otherwise a great video.
+Webb Surfer I guessed I corrected that with annotations, hope it does show it where you!
+Kurdistan Planetarium
Yes, I see now. Sorry, I always turn off the annotations because people often overuse them.
Didn't understand many vedios but this vedio is short and brief.... 👏
tq soo mch.. this cleared my all doubts.. amazing animation.. tq once again..