 Welcome back to Kids Fun Science. My name is Ken. Today's experiment is the smog alert. As always, adult supervision is required. What you need for this experiment is a jar, some aluminum foil, a lighter, adult supervision, paper and ice cubes. Okay, to set up this experiment we need a 10 inch by half inch piece of paper, 25 centimeters by one and a half centimeters. We're gonna cut that out and once we get that cut out then we are going to fold it in half and once we fold it in half we are going to, just like this, and then we're going to twist the paper. So just kind of give it a twist, start at one end and just twist it around. It doesn't have to be super tight. Just want to get it twisted up so it's just not just the regular paper there. So we twist that up and then we're going to put that off to the side for a second as we do a couple more steps to set this experiment up. Now we have our paper all twisted up and folded in half. We're going to take a regular jar and we're going to take a piece of aluminum foil and we're going to cut it out just the size of your jar. So it's going to depend on what size of jar you have and just make it so you can make it enough to where there's a lid. It doesn't have to be hanging over a lot, just a nice size lid there and then take, remove the lid and then what we're going to do is go to the sink and we're going to fill the jar up with just a little bit of water and then we're going to splash it around on the inside of the jar just to get all the sides wet and then we're going to dump that water out just like that. Now with the wet jar we're going to put the lid back on and we're going to take three ice cubes and we're going to put them on top so we can cool the inside air inside the jar. Okay so ask for an adult to light the strip of paper the first thing we made and then once you light it you're going to put it inside the jar so go ahead and remove the lid with the ice cubes and have you an adult light the piece of paper and drop it into the jar and then very quickly put the foil lid back on the jar and seal it tightly and keep the ice cubes on the top of the foil in the middle. Then you're going to see what then you're going to observe what you see in the jar. What you see is you should be able to start seeing smoke and fog starting to condense inside the cold air of the jar. The reason this is happening is when you put the the lighted paper into the jar you made some of the water moisture inside the jar evaporate into water vapor. This made the ice into a small amount of water vapor condense it turned into droplets of water in the jar this appeared to be missed in the jar. The warm damp air met the cold air the ice cubes the cold air makes the moisture into warm air condense into tiny droplets that are held in the air if there is no wind fog will form. So smog is a mixture of natural fog tiny droplets of water in the air and carbon dioxide smoke from the pollution it forms a thick dirty smelly atmosphere. Beijing experienced 12 more blue sky days last year compared to 2005. The city had 198 good days while the number of severe polluted days fell to 39. I mean it's pretty bad there. The worst smog in years in Southern California in 2016 driving people to hospitals and health clinics for treatment according to the Los Angeles Times. The warmest weather of all time compounded with stagnant winds worsened the problem the report said the ozone layers you know topped the the federal standards for 91 days in 2016 compared to 67 days in 2015. A little fun fact is the city of Los Angeles is very very smogging so they have oxygen bars where you can buy pure oxygen at $20 and get 20 minutes of plain or fruited scent oxygen. Smog is so harmful the human and animals and plants the most harmful part of smog is the ground level ozone and the fine airborne particles. Smog is shrouded uh London for five days in 1952 causing 4 000 deaths. I hope you enjoyed this video please remember to click thumbs up and to subscribe as we do a new video every day and thanks for watching