Seasons: What causes summer and winter?

A simple introduction for students that shows how the tilt of the Earth's axis of rotation is responsible for our seasons. This video makes up part of the Shedding Light on the Sun and Earth series, which covers all the basics of climate science: seasons, winds, weather, hurricanes, and how land masses and oceans affect local and global climate patterns. Each video comes with an activity sheet. The activity sheets include map reading, weather charts, graphing and more.
The full series is available on ClickView, Learn360, Classroom Video on Demand, and Safari Montage.
Go to our website at www.liacoseduc... for more details and to download the worksheet.
Watch our other Climate-Science related videos on KZbin:
Why are the days longer in Summer? • Why are the days longe...
Why the Sun gets higher in Summer than it does in Winter. • Why the Sun gets highe...
The Coriolis Effect and Draining Water: Tested with one container on 3 continents. • The Coriolis Effect: D...
Why does it get colder the higher you go? • Why does it get colder...
Liacos Educational Media produces videos and activity sheets for students. Visit our website to download the free activity sheets and a whole stack of free practical activities.
www.liacoseduc...

[@dianegroves2026]

Thank you. I'm an older adult and needed a refresher and just found this. Perfect explanation! I appreciate you!

[@IidentifyAsTheRightPerson]

Man I had some really big misconceptions about how seasons happenes. Thanks a lot guys.

[@cd3694]

Like the way you gave the Sun’s view of the Earth, that really helped in the visualization

[@thejewelryboxlive]

This is perfect for explaining the seasons. Thank you! Loved the gymnasium setup.

[@farhanadhami1239]

Beautiful SubhanAllah...glory to the creator and maintainer of our home (temporary)

[@Ivanrbc]

In my mind i was always that spring is green, autumn is red, summer is yellow and winter is white or blue. This is due to the causes that make these color appear in just seasons.

[@F1Guy-Guy]

Now it's brown every season for mud 😂😂😂😂

[@paulaestevez1969]

Finally the out of the ordinary explanation I was looking for!!! How Great is God that created the perfect inclination for our planet and keeps the perfect order in the universe.

[@jd-pw8yv]

thank you. it's a much more clear and simple explanation than any i've encountered.

[@allisonstark193]

This video is amazing!! Just the answer I was looking for! Thank you for all the images, now i can really imagine why Australia has winter while America is in summer. I'm 31, American, and never learned this in school.

[@sproglode]

This is the best video describing the seasonal variations - thanks so much - David

[@GudupSudupGhumakkad]

Thanks for the details, and tremendous setup, even I didn't know this and never thought about that, but one day my son asked why, then searched and found ur video with practical setup. Thanks for the time and details again to make this good video.

[@elizabethschraderking8706]

This is great! I especially like your demo in the gymnasium and the way you've positioned the camera to represent the vantage point of the sun. Then, your description of how the same beam of light striking north vs. south of the equator during a solstice results in two different intensities is quite elegant.

[@LiacosEM]

Thank you so much!

[@LooseTubes]

What an excellent video, short and clear. Thanks!

[@f-ranci5579]

I have to admit, I forgot how it works. This is great explanation.

[@jumbogadgets8238]

This is the best explanation I ve ever seen

[@MrRandallDish]

I was needing a refresher and this was perfect and more. Thank you.

[@starshine7937]

Very clearly explained and found the visuals helpful thank you

[@ashokj7808]

Excellent vedio.👌. I wish to see more in the public interest, the video showing that all together movements & effects of earth & moon with sun. With understanding of daylight /moonlight, night/night moon, sun/moon effilepcy , seasons etc

[@sanjibsarmah1582]

Very effective way to understand whole

[@daviddulom8258]

The effort you have put in to make this video is commendable. I hope you will soon get the subscribers and views you deserve.😇

[@100PercentOS2]

I subscribe and liked this video which is rare for me for You Tube channels. We can all learn from this well planned and accurate video.

[@kevinhenry116]

Thank you. This is the first time it has been explained how the angle of tilt increases the area of land receiving the radiation. And the amount of time that the land is receiving that radiation. I now understand

[@100PercentOS2]

Very interesting video. You did an awesome job of explaining rotation, revolution and the tilt of the earth. I thought this is how it was because you did such a great job of explaining. I was never able to wrap my head around this despite me watching so many videos. But I had no problem understanding how things works watching your video. Thanks a million.

[@Water02]

Excellent video. Finally understood with the help of great presentation.

[@eshanag4772]

I’m a science student in middle school, so helpful!

[@Micscience]

Best explanation ever. What makes this great is you visually showed us how it works which helps big time thanks for your efforts God bless.

[@LiacosEM]

Thanks Micscience! God bless you too.

[@talie6236]

I never knew this. I would t doubt if this was taught and it just didn’t register for me. Your explanation was very thorough for me. Thank-you, Sir. Great presentation. 👏

[@100PercentOS2]

I knew about this for years but was never able to find a video that explains it until I watched this video which confirms what I was understanding.

[@GaleWinged]

Thank you

[@guitarsncarsnart]

So it's the AREA covered by the same amount of sunlight. It's not the Distance (sop much anyhow). Great explanation. 3:22 explains it really well for me.

[@fromnorway643]

When the sun is low in the sky, each unit of area gets less energy because the same amount is distributed over a larger area, like this: Height Energy per m² 90° (zenith) 100.0 % 80° 98.5 % 70° 94.0 % 60° 86.6 % 50° 76.6 % 40° 64.3 % 30° 50.0 % 20° 34.2 % 10° 17.4 % 0° 0.0 % (if the Sun was a point source of light)

[@janmaker227]

Wow really good explanation and production value. One of these videos that will probably survive the next 1000years

[@Mopita]

Question so if the earth didnt have inclination, we wouldnt have seasons? or in certain months the earth would be a bit away from the sun so would have some colder/warmer months ?

[@LiacosEM]

The Earth's orbit is not quite circular. It gets as close as 147 million km and as far as 152 million km from the sun. There would definitely be a small variation in average global temperatures as the Earth gets closer or further from the sun, but nowhere near the variation caused by the tilt.

[@princechoudhary850]

You are great. I always had a doubt and u solved it. Really thankful to u 🙏❤.

[@jamshedfbc]

Loved the presentation. Good job man ❤

[@MrCoracoro]

happy that I live on Aruba, allways summer!

[@connorplumb3755]

This video is incredible.

[@pramodbhatnagar5765]

😊😊

[@alwindenjel2153]

Such a professionally explained video ...took my 💓

[@LiacosEM]

Thanks, Alwin.

[@sandandstars]

this just saved my year

[@vishalrai1461]

That was great illustration sir

[@arshaddurrani3885]

Thanks.Well explained.

[@M0oN_River]

thanks for explaning.

[@npc_084]

Thanks for the video! Only one remark: You mentioned the axis will stay like it is, which is approx. true for any given year. However, it should be mentioned that it will change over longer time spans.

[@LiacosEM]

Quite true. It's about 11,000 years.

[@SonaliSingh-mm6kz]

Just perfect❤ Thank you🙏

[@kumarbajracharya5062]

Very good explanation

[@CulTra998]

Well explained 👏🏻

[@Kuralatyt]

My doubt is that if the earth is a perfect sphere, there is no possibility for it to be tilted. Everyone says it's tilted, so I understand that the earth rotates on a tilt because it's not a perfect sphere. My question is whether my understanding is correct.

[@abdulkhan7364]

What a explanation 100/10 all my doubts have been cleared

[@fazinyousaf2571]

Superb sir …well explained

[@lovemust]

♥️♥️♥️

[@nasser6692]

thank you so much. very hard to find great videos and to the point like this one!

[@sahilsha6538]

Perfect explanation Sir.Well appreciated 🤝

[@liacosemfan2465]

Great video! I love those astrophysics facts :)

[@TheEyeOfSa]

astrloogy phacts but ok zoomer

[@zapxcero]

god-tier level of explanation

[@mandeepsingh-py1hw]

Thanks gyz for your hard work❤️

[@thomasburns6826]

great explanation, but in the picture with the four globes should not the Sept axis be pointing the other direction 180 degrees opposite, at 4:19 minutes into video

[@LiacosEM]

All four pictures are what the sun sees (from the centre of the Earth's orbit). The Earth's axis in all of them was pointing in the same direction.

[@StephenCooteNZ]

Great demonstration thank you. Best wishes from New Zealand.

[@sonofhebrews]

Illustration was very informative

[@LiacosEM]

Thanks Lionel'sVoice. As a teacher I find using illustrations and models works best!

[@fazinyousaf2571]

Pls post more videos…you explanation is superb

[@lemonades_]

Thank you!

[@KamalKumar-ps4te]

excellent sir

[@marklucey4087]

Flippen brilliant vid. Thank you so much!!

[@VictorianDad]

The Earth is at the angle of 23.4° to the orbital plane. I find it interesting, though it's probably not significant, that that is close to half of 45°. Which is half of 90°. Which is half of 180°. Which is half of 360°. Which is a full circle.

[@sailorman8668]

You are correct - it's not significant.

[@A_Class]

🔥

[@losfer2008]

Thank you for the video

[@Globeishoax]

But why not show a livestream from space how it works. I want to see people and buildings upside down in Australia

[@benmckelly3234]

The orientation of the full moon in the southern hemisphere is flipped in comparison to the northern hemisphere and the moon doesn't flip just saying 😅

[@Globeishoax]

@@benmckelly3234 prove to me southern hemisphere exist. Where is a video of Australia upside down

[@wassunoor8678]

You are a legend sir.

[@MisiLii]

Thankfully i just want to know explanation for the wheiter

[@fuzeshore1988]

Mind blown 🤯

[@vedanthello]

well explained video

[@pgrothschild]

Thankyou!

[@artinaforoozande8511]

just perfect

[@MrGaborseres]

Thank you 👍

[@johnramirez3247]

Unfortunately I live near the equator, it sucks not having to experience winter just for once in my life.

[@marcyc1695]

Wait so all the planet experiences the same months in the year, but everyones summer months are different. So based on when they sun is hitting it than that is that part of the worlds summer?? Is Summer a different month in America as it is in Asia?? Thank you everyone for helping me. I really appreciate it.

[@LiacosEM]

The northern hemisphere summer occurs while the southern hemisphere's having winter. The months are the same.

[@marcyc1695]

@@LiacosEM Wait now im more confused. So does that mean its the same months but the north experiences hot and the south experiences it cold. For example im in New York, in July its Hot and summer, so what is it in the south?? Is it hot summer as well??

[@TheBillABCTV]

@@marcyc1695I am in Australia but in 2017 i have traveled to NYC, yes in Australia is winter in July and summer in NYC. I also believe the seasons start on the equinoxes and Solstices. Now because the earth is furthest away from the sun in early July that is why in NYC has a longer spring and summer.

[@marcyc1695]

@@TheBillABCTV Thank you so much!!!! I was just so confused and im trying to educate myself more. I was never taught this on school and id like to understand the world more. Thank you so much for clarifying it really helps. You answered my question so well. I couldnt comprehend if on the other side of the world (Im in the North of America, NewYork) for example if it would be the hot part of the year while it as cold on my side. I see now that it is flipped. Its confusing stuff. Especially because I didnt realize it depends on North and south hemispheres.

[@Jared_Albert]

Thank you brilliant

[@saidtazi6734]

سبحانك ربي لا الاه الا انت استغفرك واتوب اليك

[@pallavitpatel7604]

Very helpful

[@bachazada2023]

Great sir thanks you

[@nada4784]

Very nice

[@shivarajme]

Good explanation

[@Rumba312011]

Are your Australian

[@snrnsjd]

Summah and wintah. The accent is stronger that the sun 😁. Is it australian au nz accent? Bth ,I like the video, it's very simple and easy to understand! Thank you!

[@LiacosEM]

Australian accent! We don't say the last "r" in words like summer, hotter, etc. New Zealanders and Pacific Islanders do the same. Many (but not all) in the UK also leave out the "r".

[@yashvrsingh]

love from india

[@paulbarrier-es1bp]

Earth Science Novato is a better explanation for cause of seasonal weather and seasonal shadows.

[@tylermitchell9131]

I enjoyed the video! I have one question though. You mentioned the sun hitting the one hemisphere more directly, causing summer in that hemisphere, and in the other hemisphere the sunlight is more spread out, thus less energy, thus cooler. I had never heard or picked up on that before. I always assumed that it was because the one hemisphere was a little bit closer to the heat of the sun for that part of the year, and the other a little bit farther away. Does this also affect the temperature? Thanks! I love orbital demonstrations.

[@LiacosEM]

Thanks Tyler. The earth has a diameter of about 13,000 km but it is about 150,000,000 km from the sun. The difference in distance from the sun for the two hemispheres at any given moment is basically zero. Also, the orbit of the Earth is not circular but slightly elliptical. As it orbits the sun, the closest that it gets is 147 million km and the furthest it gets is about 152 million km. And yet, both hemispheres experience summer and winter on cue!!

[@kbabhimitra]

Sir r u from Australia?

[@ricksomething]

No, I'm not.

[@nishikanto1]

very nice video❤❤❤

[@chimev5607]

It is very sad that still 2024 there are no live camera for whole earth from space!! another scientific query I have is: earth is tilted to left(from viewer's point,)means opposite to this video which shows right sides bent. why I think left bent tilt? because Vancouver vs Halifax, NS! if it was tilted right then Halifax would have those "mild tropical forest" red woods etc. rather Vancouver has it!! see? tilt earth left and see how well vancouver/ west side of north america faces more sun!!!. if anyone knows then explain😂. coz I am debating where to move, east end or west end of Canada😂

[@cesarrodriguez-tw9bp]

Sooo, earth doesn't wabble then ?

[@Majojajo123]

Myslalem ze sie chwieje

[@John-3-17]

According to Kepler's theory - the distance of the earth to the sun is not the same during winter and summer. Why are you in a perfect circle? How could the sun be farther away during aphelion and be summer time? And be closer to the sun during perihelion -and be winter? Not to mention the sun's size remain the same in the sky? Heliocentrism doesn't make any sense, at all. Our globe is stationary. The sun moves!

[@fromnorway643]

Nonsense!

[@rainsky8467]

The earth you can not say its tilted how could be its a ball ?

[@Light_factz]

During October to November the apparent movement of the sun towards

[@JamesArsenault]

Psalms 104:5 KJV who laid the foundation of the earth, that it should not be removed for ever. this verse means that the Earth doesn't move.

[@BOSS.SANJOY]

পৃথিবীর আকর্ষণে চাঁদ বাঁধা পড়ার কারণে আর চাঁদ যেদিক দিয়ে পৃথিবীর কাছাকাছি এসেছিল সেই দিকের কারণে ২৩.৪° তৈরি হয়েছিল কি

[@JeshuSavesEndTimeMinistry21C]

GEN 1:14-18/ GEN1:6-8 21C Fixed YEC Motion Of Sun Em Machinery 2 Lights, Equal In Size to Mark Seasons

[@SwathiSwathi-xe9mc]

Super

[@akirauzumaki166]

🎉

[@eduardocalvorost2482]

Excelent

[@e60_guy40]

This very common and simple video ( flat earth people ) should watch 😂

[@andream.464]

at but you didn’t explain why days are longer or shorter, which is what I wanted to show my son. You only explained why it’s hotter or colder. Most videos have this omission! 😢

[@LiacosEM]

See my "Why are the days longer in Summer?" video: kzbin.info/www/bejne/m5OsfayZbtt4gposi=tAk8yp_Xfi2SwDOl

[@aarilhansda]

During the revolution when the earth is on the east side of the sun, how sun rises in the east

[@sailorman8668]

The earth is always rotating in the same direction, in an anticlockwise direction from east to west. OF COURSE the sun will ALWAYS rise in the east. Do you have a learning disability?

[@luqmanshaikh6366]

I am 27 years old until I realised this😂