 Welcome back to Kids Fun Science. My name is Ken. Today's experiment is does ice cubes melt faster in fresh water or salt water? As always adult supervision is required. What you need for this experiment is colored ice cubes, salt, and transparent cups. Now ask yourself the question. Do they melt faster in fresh or salt water? And while you get that answer going to set it up, we need two glasses filled with regular tap water and one of them we're going to pour salt. Hence the whole name of the experiment right salt water and on to the left is regular tap water both are regular temperature So straight out of the tap so there's not hot or cold just have salt in one of them And then after that we are I froze last night. I froze some blue ice cubes And I'm going to put one ice cube in each one So I hope you got your guests there to see which one's going to melt faster of course you could tell the fresh clear tap waters on the left and the salt water is on the right and we can see that It definitely kind of looks from the beginning that The regular tap water is going it looks like it's melting because we can see the stream But we don't see much it is murky on the salt water side. So We'll continue to watch this and why we do I'm going to tell you the science behind it So the science behind this well I love this results of this experiment because it really surprised me when I put salt on an ice cube it melts the ice cube very fast So when I saw this experiment, I couldn't believe my eyes So the ice cube in the salt water Started melting much slower than the one in the fresh water in the salt water the colored water from the melted ice Cube formed a distinct layer that floats on top of the salt water as you can see on the right hand side in The fresh water it melted and sunk to the bottom and spread out evenly These observations can be interpreted by comparing the density of the fresh water and the salt water when the ice melts the water That results is very cold It is more dense than the warmer tap water that is in the cup and thus will sink as we see on the left-hand side As the colder water sinks it displaces and pushes the warmer tap water from the bottom as The warmer water comes in contact with the ice cube It hastens its rate of melting and pushes up the convention of the transfer of the heat by the movement of the fluids As for the cup on the right the salt water the cold water that results from the melting of the ice cube is less dense than the salt water So it floats on top There is no convention currents occurring here since the ice cube is constantly in contact with the very cold water Which prevents it from contacting the warmer water below which takes longer time to melt The same effect happens in the oceans where icebergs last much longer in salt water than they do in fresh water The melted ice from an iceberg will float on top of the salt water in the ocean But it'll sink in the fresh water same effect with the soda drinks ice cubes will cool a diet drink much faster than they Will a sugar drink For the same reason So that's what the science is behind this experiment and you can see here as we finish up On the left-hand side the regular tap water the ice cube is just about gone And I will show you the ice cube on the salt side is probably only Two-thirds of the way done. So it does melt a lot faster in regular tap water than it does Salt water here. You are you can see The regular salt water first on the side here. It's got that fit layer There's the ice still so it didn't completely melt the whole ice cube where there's absolutely no ice cube left at all in The regular tap water. I hope you enjoyed this video Remember to click thumbs up or share if you like it and thanks for watching