what I need to talk about now is two special types of tides okay - actually I probably can fit this in another part of this page let's save some paper okay here we go so please don't be distracted but if it's kept so we said that the moon makes the tides happen with gravity right the moon makes the tides happen with gravity please stop biting me okay what second guys get out of here stop biting me stay please okay all right okay so here we go said this is this right here this is like that I know this isn't soom but this is that zoom bombing that everybody's talking about right here this cat okay anyway here we go so I'll cut all this out I mean not all of it cats in the content okay so we said that the moon makes the tides happen using gravity but is the moon the only thing that we feel a lot of gravity from what's another thing that we feel a lot of gravity from other than the moon actually we feel more gravity from it the Sun okay so we feel even more gravity from the Sun than we do from the moon okay and it turns out that the Sun has a tiny effect on the the the Sun has a tiny effect on the tides okay here's my next question if we feel more gravity from the Sun than we do from the moon why is it that the moon has a bigger effect on the tides why does the moon affect the tides more than the Sun does if we actually feel more gravity for the son it's closer yep it's closer that's correct because the moon is closer because remember this the reason that everything got stretched out like this is because this side of the planet feels a lot more gravity than this side of the planet from the moon right and that's because the moon is closed because the moon is closed the distance to this side of the planet is a lot less than the distance to this side of the planet from the moon so that difference in gravity is what does it but imagine that like the Sun was just way way way over there the Sun is just way over there for example if the Sun was way over there 93 million miles away then the distance from this side of the earth to the Sun and this side of the earth to the Sun is basically the same so they feel about the same gravity because the Sun is so far away there's not a big difference in gravity even though the total strength of the gravity is higher so basically the moon gets to decide where the tides are gonna happen and the sun's just gonna give a tiny little extra pull on it okay so that means most of the time we can't actually notice that the Sun is having an effect on the tides most of the time it's not really noticeable but there are two special types of alignment that the Sun and Moon can be in to give us special tides okay and I think somebody has a question so I'm gonna go ahead and start drawing something real quick while that's coming out now check it for the question in a second so let's say that the earth is right here put an e on it and let's say that the Sun is way over here now if oh that's okay it's okay all right now so if there was no moon at all and the Sun was right here where would it want the high tides to be on the earth would it want with this Sun being right here want the high tides to be on the top and bottom or left and right where would this Sun want those tides to be top and bottom of the earth or left and right remember it's all about the pull of the gravity yeah left and right okay so if the Sun was right here it would want the high tides to be towards and away from it just like the moon likes the tide high tides to be towards and away from it okay so that's correct now oh you're gonna freeze on me again I hate this machine so much okay sorry we're back now so here we go if we wanted the Sun and the moon to work together the the moon would be right here if the moon was right here then the moon would also want the high tides to be in the same place that the Sun does you can see that they would pull together here what would that do to the high tides on that particular day if the Sun and the moon were lined up like that what would happen to the high tides on that day they'd be a bit higher not a crazy amount higher but a noticeable amount higher okay so the high tides would be extra high okay but it's a little bit hard to tell but you'd also be able to have those extra high high tides if the moon was over here now it seems like the Sun and the moon would be working against each other right here but they still would want the tides to be in the same place so if the moon is here or the moon is here we have a higher than usual high tide called a spring tide so if the moon and the Sun work together we get spring tides okay so whenever the moon is here or here you get a spring tide extra high high tide okay here's my question when do spring tides happen when do spring tides happen how often do we have them take a guess and I'm I'm trying to I'm trying to trick you here I'm trying to trick you okay so here's the day this was a trick question oh and somebody got the right answer okay that's very good that's very very good so the name being spring tide tricks people into thinking these only happen in spring okay but it's not going to happen just in spring I'll explain the name in a second it happens twice a month every sink twice a so sorry twice a lunar cycle twice a moon phase cycle you actually get spring tides every time the moon is here and here and these are certain tides somebody actually said it already that's a new moon and a full moon okay how do we know that this is a new moon right here how do we know that this is a new moon what's what's special about where the moon is how can we always tell where New Moon's are when the moon is yeah that's that's basically what I'm getting at when the moon is between the Earth and the Sun then it's going to be a new moon so every single new moon gives us a spring tide and this is the moon when it's on the opposite side of the planet so every single full moon is also going to give us a spring tide so why do we call it a spring tide if it doesn't just happen in spring well check it out words have multiple meanings right words have more than one meaning this is not spring as in like birds tweeting like Tweety to a tweet spring right what is why is this called spring it's another meaning is a spring right it's like a boy it's sprung up the water has sprung up in a spring tide okay so here we go you're gonna have to stop bothering me okay now okay so every single full moon and new full moon and new moon gives us a specially high high tide a now on the other hand what if the Sun and the moon work against each other if we put the Sun in the same place and the earth in the same place remember we said that here the Sun would want the tides to be on the left and right of this earth where would the the moon need to be in this picture to fight what the Sun wants where would the moon need to be in this picture up on top that would work and there's one other place where else could the moon be on the bottom right so if the moon makes sort of an L shape or a right angle with the Sun then it's going to be perfectly working against what the Sun wants okay and who wins who wins on getting to decide where the tides are gonna let me put it this way if the moon wins the tides would be on the top and the bottom here if the Sun wins they'll be on the left and the right so who wins the moon the moon has a bigger effect on the tides because it's closer so we're gonna have a high tide here and here but what are those high tides gonna be like what are those high tides gonna be like compared to a regular high tide yeah yeah exactly not it not it not as good right they're gonna be not as not as hi okay this situation is called a neap tide and it's the last time we're gonna talk about neap tide it basically means a weak tide okay it means a very weak tide so our high tides are kind of a it's still a high tide but it's gonna be you know a few inches lower than usual all right now last thing I'm gonna ask about this can we figure out what moon phases would give us neap tides when the Sun and the moon are at right angles you might have to look on your moon phase figure which phases are gonna give us neap tides we bring in our moon phase figure if the Sun is over here right the earth is here we're talking about this phase in this phase yeah that's your first and third quarters so every single time we have a quarter moon we're gonna have weak high tides and every time we have a full or new moon we're gonna have strong tides okay and actually one cool thing about that if in a spring tide if our high tides are higher then that means the low tides are also lower right and a lot of animals have learned to use this like there's a species of turtle and turtle I guess this is a tortoise I don't I don't really know I'm not a biologist but there's a species of turtle that lives on the land that likes to eat clams nor other shellfish and the it those grow on the bottom of lakes and those turtles actually know that if there's a full moon out there's gonna be a spring tide today and that means if they wait for low tide on that day the will get extra low and it'll be easier for them to get to the to like the shellfish that they want to eat right so their animal they probably don't know why they're doing it but there's animals that know to use the full moon to use the effect on the tides as part of their life cycle that's I think that's pretty cool