🔬 Science Max - EARTHQUAKES - Home Experiments 🌎

greeting science maximized my name is Phil and this is science max experiments at large today we're gonna be looking at earthquakes earthquakes huh today we're going to be looking at how to build something that was supposed to happen earlier today we're gonna be looking at how to build something that stands up to the shaking of an earthquake earthquakes happen when two plates on the Earth's surface rub together and it causes the ground to shake causes the ground to shake sometimes it shakes a little sometimes it shakes a lot chances are you do not live in a place that has earthquakes but if you do ask an adult what to do during an earthquake so you can be safe modern buildings that are built in earthquake zones are designed to withstand the shaking but how do scientists and engineers build a building that stands up to the shaking of an earthquake well that's what we're gonna be looking at today first thing we have to do is simulate an earthquake we're going to build a shaker table and here's what you need two books two books for elastic bands and four for rubber balls well okay for four balls alright so the first thing you do is to actually take your four elastic bands and wrap them around your books put one set on one side one set on the other side till you have that then you take your four balls and you stick them in between the books in the middle ish area but you don't want to have them too close to the edges and now two at the back and tada you've made your own shaker table what are you shaking you ask I will show you you build a tower like this one here that I built out of building blocks so here's what you do you'll need your base to be securely attached to the shaker table I use painters tape because it'll come off again without harming the books and what I want to find out is just how much shaking this tower can take before it falls apart ready and there it goes and when you've done that what you do is you be a science maximize and you design another Tower and you tape it down to your shaker table and see if you can make this tower fall down in an earthquake and if you but you don't have to just use building blocks there's all kinds of other materials you can use check out this building which is really tall and you'll see there's a cup at the top and that's for a baseball put it up at the top and that means there's a weight up there and then we shake it and we see what happens oh there it goes having a big weight on the top of our tower means we need something that will resist the movement of that weight so now we're going to start with a triangle unlike a rectangle triangles are very stable a wider base keeps the structure from swaying too much and cross braces in the middle mean that there are other triangles within our triangle all the better to resist movement thank you after Anna and I built our tower we added the weight to the top secured it to the base and try to do okay here we go [Music] looking good no problem it's not twisting it's not even leaning not even creaking no it looks really good wow this one is really solid as you can see this tower is way more solid than our square Tower or the flexible Tower okay look at that like if that's not an earthquake I don't know what is look at that look at the way the ground is moving I don't know if we can shake it much more than that faster our triangular Tower is up past a level of shaking that made the other towers collapse now it's time to max out the shaking there's only one level of shaking that we can do above this what's that we shake from either side we give it all we have the floor was bouncing from side to side the tower was tilting and was totally solid in fact and an eye wore out before the building showed any signs of falling over I think we've done it science max experiments at large earthquake proof building I mean come on that was impressive I like it burns coming over and I don't have a table that's okay I will make a table using my friends this is an awesome experiment you can do with four friends come on in science friends I've got Sam and Dylan and Polly here to help me so everybody turn to your left and sit sideways on the chair and then scooch the chairs into the middle and then everybody leans back onto the knees of the other person and then this is why I said you need four friends because you need the fifth person to remove the chairs oh the reason why this works is because everybody's weight is being supported on the legs of the person next to them okay we're gonna rotate it in a circle everybody okay ready here we go we're hitting rotating science thing whoo hey we're pretty good at this so there you go awesome way to make a table using your friends well done well done science [Music] another thing that happens during an earthquake is soil liquefaction liquefaction means something turns to liquid in this case the very ground you might be standing on here's how you can experiment with soil liquefaction all ye'd is a plastic container and some water not very much barely enough to cover the bottom of the container because what you're gonna put it next is sand and you want to put it in there and spread it around just add enough sand so it just starts to turn dry on the very last layer so here is a house that I'm going to put on top and now I will simulate an earthquake the water rises up and it sort of turns to liquid soil liquefaction and heavy things like houses and cars they tend to sink like that and then the soil retardants and everybody's houses are stuck in the mud and cooking up science recipes is my speciality I bust a beaker and this is cooking with science welcome to cooking with science I'm Buster beaker my tuna fish and meatball sub soup is coming along quite nicely but what will we have for dessert I know how about earthquake buildings haha it's a building made out of wafer cookies but the people on vanilla Street built in the gelatine neighborhood and the people on chocolate Street built in the crispy rice part of town exciting now here comes the earthquake shaking the shaking is coming on for the people and chocolate Avenue and their building is still standing now let's take a look over here on vanilla street and yeah looks like the people on vanilla street are going to have to rebuild their building because it's all fallen over and being eaten delicious buildings can be built the same way but the kind of soil they sit on make a large difference if there's an earthquake shaky wiggly soil or a solid non-moving soil so there you go an experiment you can try at home delicious well fine you bust a beaker and thank you for joining me on this episode I'm cooking with science now to try my soup [Applause] 60 seconds learning how to predict and measure earthquakes is an important branch of science the earth is shaking but which way did the earthquake come from it's all about measuring the vibrations and to do that you need a seismometer all you need is a ball some paper cups some modeling clay a pencil and science tape which is the same thing as invisible tape except I use this tape for science first take your pencil and stick it straight down into the modeling clay then you take your cups and you arrange them in a circle and tape the cups down and that goes right in the middle just like that now what you do you take the ball and you carefully balance it on the pencil now you have created a seismometer then we'll tell you what direction an earthquake came from watch I will be the earthquake ready did you see that the ball fell into the cup facing the direction that I hit the table and now I'm gonna hit the table from over here yeah it fell in the direction that I hit the table okay strike from over here there you go your very own seismometer that you can use to measure earthquakes that you create on the table

Channel: Science Max

Views: 1,541,347

Rating: 4.7910662 out of 5

Keywords: Cool Science Experiements, science, science experiments, science experiments for kids, awesome, science max, kids, educational, experiments, easy, fun, earthquakes, liquids, build, lego, tvo

Id: TLsqVjtrovo

Length: 10min 21sec (621 seconds)

Published: Fri Feb 01 2019