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Bill Nye Friction

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firefighters use which one listings for GTA 4 science Rules inertia is a property of matter listen to buy rubbing rubbing something almost slipped in friction that makes your feet stick to the floor and it's friction that makes your fingers stick to these buttons and when we make fractions we can make the door slide open easily if it's tracked wide-open easily  next track friction is the force we feel whenever things are rubbing on you jokes  the friction that makes this wooden box sort of stick to the stable so it's hard to push but then it gets easy when it's rolling on these hard metal ropes it's friction that but just stand like my feet are sticking to the floor if my feet were sticking to the floor so well well I couldn't do that take a look at this it's are friction ramp of Science and tilted thank you or wait gravity is pulling it straight down but it's not sliding down the ramp what's holding it there is the force of friction pushing this way what happens when we make the ramp steeper the whites the same but the force between the ramp and the waist smaller and snow and then it slides down hill it slides down hill see the harder things are rubbing together the more friction there is no I should happens when I push it back I'll do it a few times no I've been working pretty hard but the way doesn't go anywhere what happened all that all at work I do well if you feel the rim it's a little bit more friction turned that work in the heat it happens every time cheap friction is everywhere friction is which slows your calm down you should pull it through your hair friction is what keeps your bicycle from sliding out from under you as you go around and friction is what keeps your show latest time question is what holds all not together see even this one down here science fiction theater pools all over because I resisted the idea of resistance but now there's a device an experiment next friction home but there's nothing can beat down living things and changes motion energy into heat I should be very easy beef reaching some gas molecules interacting quit just the same the friction is a force that created whenever things rub on each other take a look at your skin did you go like this your fingers get warm the energy of rubbing is being changed to the energy of heat by friction look at your finger up close see those rough ridges it's your fingerprints that let you hold on to smooth things are pick up small slippery things like the edges of coins have roughness on them too for the same reason you have fingerprints necro all good though so it's friction and finger Prince make your fingers get warm when you rub them together have you ever seen a hovercraft well it's this big boat which is air underneath it so that it floats on the water there's less friction so it really cruises you can make your own hovercraft of science all you need is a piece of corrugated cardboard and a plastic bottle cap cut your cardboard into a circle and smooth the edges then glue the cap into the middle of the cardboard and let it dry so it looks like this then get an adult what's a cat to the middle of the cardboard look something like this when you're done  stab wound untwist the end I put it over the top of the cat  Napa smooth surface and give it a push it flow are hovers friction is science after this break friction is a force you can feel with your feet that's why I lot of times you were special shoes on your feet shoes people play sports lot of times they were spikes or cleats on their shoes and that way they get more friction with Brown spikes for the cleavage of shoes have a very rough bottom so they stick to the ground better make it easier to stop or go the situation where you don't want to unfriend you just the right amount sync cheap basketball shoes are made of the rubber has a lot of friction when it's going against Hardware  directions to let you do stuff like this streaks Shrine because they make a liter of liquid water between a metal blade in the ice she really sliding liquid molecule size ball bearings and there's very little friction  so the soles of skis are made slippery so don't have less when your on snow or your leather shoes help you control friction on they're screwed but they stick just a little basically the trick to barefooting is am I sing the friction so you can slide over the water better the energy in the friction of the water sausage first here's a lot but you need to just let go and not here because a lot of feels a whole lot softer this is a fire stick that uses friction to get things hot were using this bow with the Star song to make this dowel spin the spinning dowel makes friction with a piece of wood that friction is hot enough to start a fire and a few minutes I'll have a roaring fire alright suit yourself they mention if you will a world without friction a world where cars and trucks would move easily Drake's would be useless without friction would be dangerous what you want to do is control fresh the bottom of the scheme so Lizzie smooth and slippery right over the snow  thin layer of water forms okay I'm here consider if you will a world without friction a world where objects Glide smoothly against each other without me a world where simple actions like dancing would be impossible without friction would be dangerous agua news  the sun is covered and slippery aluminum which cuts out of friction and makes you go fast holding is he risen Greg between this book and the coffee when you put the book on these ball bearings marbles  bush beans football brings in these wheels I would make skates and skateboards Rock the wheels motor out without a lot of friction the song down so you can really go we'll be right back with more friction after this break when you need to stop put your which of the floor and try some breaks today  quarterback it's a great day for cycling and hold your feet on the pepper and hold your water bottle water bong work babers Nobles lower the friction 0llies in the grease on the Chain Face to put some rest so you can slip right on friction holes and take one to handle bars in your car on your hand there's got to be one more fright the friction gives you practicing to stay on the track and around the trunk pulling is all about friction she even though the bowling alley is school and the bowling ball is smooth there still friction there still sticking you can see it if you push a bowling ball like this it's not sticks that's because it's sliding on the floor but since a bowling ball is round and floor when you push it it starts to roll it's not sliding and that lowers the friction just imagine bowling with something that wasn't around so many didn't I like a square bowling ball choosing and Eureka really really really big and heavy is a train moving we use friction C A friction or the train Wheels Acela train gets traction ztrak traction coincidence I don't think so I mean you think you want us will friction as possible between a train wheels and the tracks I would go on easily but you have some otherwise we could even get the train moving in the first place stick to the rails at all with the train Wheels sticking it would maintain traction anyway. synonyms for molecular box in the air you can feel the air but you feel any friction but if you're the spacecraft going say 30000 kilometers an hour we entering the Earth's atmosphere as these guys were in Apollo 17 there's a lot of the air is rubbing on the spacecraft so fast that actually heats up this whole side of it became red hot this is the 17 but it was it was really hot  expect me to stop Google brick Shawnee friction is a fact of life so living things have found ways to deal with it for example fish are smooth so you can slide through the water after they cut friction  and then our joints have pads and who would in the cut friction to reduce wear and tear on our bones  The Crickets make their songs with fresh their wings have a file part and a scraper part when they rub them together they get a nice musical sound that is nice that's very nice I'm in this Olsen and for many years I've been studying  see beautiful flux what's the wonderful things about them is that they make mucus all over the body this mucus not only shows to attach the song to my fingers or to anything else is blocking on but it also reduces the friction between the call Scotty and the ground if you were to come along the ground and you didn't have any mucus to put out between you and the ground you would probably find it very uncomfortable at my scrape your arms and legs you'll be much better off if you could put on the way I miss the way the slug done and slippery at the same time if it wasn't for free the slug clean moved but without friction the slug was fall best flash player for frogs best science they use friction the cool this is a wind tunnel before scientists measure the friction from thin air what was bump into things like airplanes that friction that's why airplanes have such smooth shakes to reduce drag you ready this is a model of a supersonic plane that may be flying one day it's very important to make the air flow over it smoothly because the last smooth the full well the more energy the more fuel we're going to need to make it go where we wanted to go is that cool how do we know try this friction Xperia hookah hole through the end of a box then Freddy balloon through the whole soda look like this  then get some straws and make a pathway I don't look something like Nebraska balloon  twist the ends that it's really tight now put the balloon and the Box on the straws and Let It Go  friction and act like roller so the Box moves Marvel Avengers a diverse women on things it's downstairs shooting stars She Talks to Angels well that's our show thanks for watching it was use me for my last hey Brian I'm going to grind up Sia produced in association with the National Science Foundation flood insurance a world without friction would be dangerous creeper

Uploaded by Dave Machuca.

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