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Monday 06/15/2020: Science-Floating Shark Video

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This video will show us how the oil found in a sharks liver is very similar to vegetable oil, and how this helps a shark to float under the sea.

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Hi ASA dragons this is Miss Arlene today we have a floating shark science project so we're going to need a toilet paper roll 1/3 vegetable oil a picture of a shark 3 pennies tape a balloon a funnel and a bowl filled with water as you all could see I have all my materials here ready so let's go ahead and get started with this science project okay we're going to get the toilet paper roll tape the picture of the shark so we're going to get the picture and and tape it to the top of the toilet paper roll so this is going to be our shark let's go ahead and get some tape and place the shark on top of it just like this make sure it's a very secure because we're going to be putting this in water we don’t want it to fall off okay so once we have this put together it's going to look like this here is our shark for this project okay now we are going to get our pennies here they are 1 2 3 pennies and we're going to grab more tape our shark we're going to flip it over and we're going to be taping the pennies at the bottom of the toilet paper roll like that okay boys and girls so my three pennies are already taped at the bottom of a shark and here's shark now let's go ahead and put it inside the bowl with water before we do what do you boys and girls think is the shark going to float or is it going to sink all right let's find out here it goes and our shark is sinking  boys and girls our shark sunk to the bottom of the bowl okay boys and girls our shark did not float all right now we're going to be getting the cup of 1/3 remember 1/3 and our a vegetable oil okay boys and girls we're going to be pouring in the vegetable oil make sure it's one third of a cup just like this once that's done we're going to be getting our balloon and we're going to pour the oil inside of the balloon we're going to fill the balloon with the oil okay boys or girls my balloon is filled with the oil unfortunately I did not have a funnel so I went ahead and use this a medicine dispenser it worked perfectly fine to dispose oil inside of my balloon okay so our balloon is filled make sure you tie a knot at the top of it and now we need to get our shark and put the balloon inside of the toilet paper roll okay okay boys and girls just like that our balloon has to be inside of the toilet paper roll so here's our shark and we still have the three Penny's at the bottom of the shark okay there's our balloon and here is our shark now with the vegetable oil inside our balloon do you boys and girls think that the shark going to float or is it going to stink okay so let's go ahead and drop our shark inside the bowl and look at it boys and girls our shark is floating this time do you boys and girls know why it float this time and it did not float the first time will let me go ahead and explain a little bit most fish have a bladder full with gas this is what keeps them balanced in the water sharks do not have the bladder but they do have other adoptions which are no bones large liver and stirring fins since the liver is filled with an oil that is similar to the vegetable oil that we have used in this experiment and it acts like a swim bladder of other fish by giving them neutral buoyancy this is why this time it did float well boys and girls this is it this was our science project I hope you guys enjoyed it and learned a little bit about what’s  inside of the shark and what keeps them floating

Uploaded by Arlene Montiel-Sanchez.

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Monday 06/15/2020: Science-Floating Shark Video

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