let's talk about the seasons the orbit of the earth around the Sun combined with the tilt of the planet causes the seasons to happen okay so the tilt of the planet causes the seasons now check this out what we need to do and hopefully at some point you've learned about how the seasons work but I'm gonna review it real quick right now and then just put a little bit more detail in it now check this out so right here I've got I'm trying to draw a sort of a 3d image here this is that's why I drew this ahead of time I'm not the best artist but right here we got the Sun towards the center of the orbit and this is the Earth orbiting around the Sun okay and remember precession precession that we talked about last time his precession really fast or his precession really slowed his precession really fast or is precession really slow I think I might have a little bit of a delay it's really slow so that means within one human lifetime and especially within one year the the earth is not going to process enough to really worry about it in your lifetime so we can basically just pretend that the North and the South Pole always point in the same direction every part of the year you can't see the South Pole in this picture because it's behind the Sun so right here this the earth has come in front of the Sun and that's why it looks so big it's close to us and then right here it's moving right to the back it looks a little smaller because it's further behind the Sun but in all of these we've got that same exact tilt going around the Sun now so here's my question for this question this is left right front or back okay left right front or back for the Northern Hemisphere for us here in North Florida which one of those is summer I mean if you don't know how to do this I'm gonna explain it in a little bit but let's see if we can make some guesses here so which one of these is summer for the northern hemisphere left front right or back let's take some guesses which one of these is summer because the summer has to do the seasons have to do with how the the north and south pole are tilted right nobody want to guess come on guys let me give you a hint let me give you a hint it is considered summer when the north pole is tilted towards the Sun okay it's considered summer when the north pole is tilted towards the Sun for the northern hemisphere so yeah which one are we dealing with which one is the summer it's this one it's the one on the left so if we look right here because we can see that the north pole is in the light and the south pole is in the dark we know that the North Pole is tilted towards the Sun okay so right here when the north pole is tilted towards the Sun and the South Pole is tilted away from the Sun it's summer for the northern hemisphere so for everything I'm about to say it's for the northern hemisphere I know some of you guys are actually in the southern hemisphere right now I'll get to the southern hemisphere for a second in a second but right now it's summer right here okay so if this is summer can you guys figure out what season it would be when the Sun when the earth is right here what season would this be right here if that over there was summer this is yeah that's winter okay that's winter right there all right so we can tell this is winter because the north pole is tilted into the darkness and the south pole is now tilted towards the Sun so when the north pole is tilted away from the Sun it's winter okay so check this out that means here and on the one back in the back the north pole is not tilted towards or away from the Sun it's just sort of tilted off to the side somewhere so here we go if this one is summer and this one is winter what's this one somebody's already guessing what's this one what do we think this one is right here okay yes this is fall how can I tell that this is fall this one in the front is fall and not spring how do I know that that's fall because for both spring and fall the the tilt is neither towards or away to the Sun but yeah it's because it comes after summer to know which one is fall and spring you have to look at the orbit right you have to look at the orbit because this was summer and this arrow is pointing in this direction we know that this has to be the season after summer so that means this must be fall okay that's got to be fall right there and then you get to winter and if you follow the arrows again this is the one after winter so that's gonna be spring in the back back there okay so really what that means is you really only have to find summer and then as long as you know the order of the seasons you'll get all of them right as long as you can find summer where the north pole is in the light and the south pole is in the dark then if that summer the next one's got to be fall then winter then spring right I can't tell you how many times on a test people have labeled these like summer winter spring fall or something like that and that blows my mind it blows my mind that people will put the the seasons totally out of order that's crazy to me I mean I know in Florida we don't really feel all of these seasons it's just sort of like summer fall for like a week and then summer again but you still got to know the order of the seasons right so yeah fine summer and then that will point you to all of the other ones okay now somebody's pointing this out this is summer for us in the northern hemisphere because our pole is tilted towards the Sun but if you're letting down in Australia or the southern part of South America or Africa then your pole is tilted away from the Sun when the Earth's right here so what season would this be for the people in the southern hemisphere right here if they're tilted away from the Sun what season would that be that would be winter right that would be winter which means if that's winter for the southern hemisphere what would this be for the southern hemisphere on this side their pole is tilted towards the Sun so that's going to be summer so actually somebody already posted this that means that if you know all of the northern hemisphere seasons what's going to be true about all over the southern hemisphere seasons the southern hemisphere the seasons are always and it's okay yes reversed that's a good way to put it they're always reversed or opposite of ours right so basically don't worry about memorizing both of them just be able to figure out the ones in the northern hemisphere and then the southern hemisphere ones are always just the exact opposite or if you live in the southern hemisphere find out the southern ones and then the northern ones are just opposite so if this was winter for the north it's summer for the south if this was fall for the north it's spring for the south it's winter for the north summer for the south spring for the north fall for the south Oh in one other quick question do you guys know what the other word for fall is in English what's the other word for fall sometimes people say it sounds a little fancier okay what's the other words were fall autumn okay autumn don't make the mistake of not knowing that word one time on a test I put this on here and I said find autumn and I had several people come up to me after the test to ask me what autumn was and they weren't able to answer that question because they did not know the word autumn and you I know what you might be thinking oh maybe they just weren't native English speakers but no this is a native English speaker this was this was this person's only language was English and they still didn't know the word autumn I'm not gonna shame you on this too much but autumn is just a fancy way to say fall okay so the bare with it okay now so this that we've been talking about is probably something you learned in school before okay it's probably something you learned in school before maybe not if you live very close to the equator you might not have have learned this so somebody's asking is is autumn a southern thing and I think I mean they say it in England too it's not used very much anymore I guess that's the problem but yeah it might come up okay