KALEIGH: Do you think that I can get this ice cube out of this glass of water just using this piece of string? Wow, this is really hard. Oop, I almost got it. It's slipping off. See? I can't do it. But here's a way that I can.
This "Phenom" was sent to us by the kids at the Kelly Smith Elementary School in Francis, Florida. The magic ingredient is salt.
Sprinkle a little salt on top of the ice cube. Then drag your string across it. I'm going to put a little more salt on top. A little more... There we go. In about three minutes the string will be attached to the ice cube. Let's see what happens.
See the salt dissolving into the water? If you look closely, you can see that the top of the ice has changed. It's a lot rougher than it was at the beginning. Ta-dah! This is rising ice.
This happens because the salt melts the ice a little bit and forms a puddle on top of the ice cube. Then it refreezes a little bit around the string and, see, you have rising ice.
Salt does interesting things to ice. In the winter, it's used to melt ice on the streets.
Academic standards correlations on Teachers' Domain use the Achievement Standards Network (ASN) database of state and national standards, provided to NSDL projects courtesy of JES & Co.
We assign reference terms to each statement within a standards document and to each media resource, and correlations are based upon matches of these terms for a given grade band. If a particular standards document of interest to you is not displayed yet, it most likely has not yet been processed by ASN or by Teachers' Domain. We will be adding social studies and arts correlations over the coming year, and also will be increasing the specificity of alignment.