How to Keep Ice for Longer | Kids Science Experiments

Do you know how to keep ice for longer? Today we are exploring what materials delay melting of the ice better. The fact that clothes keep us warm confuses some children in thinking that the more materials we wrap around an ice cube, the hotter it is going to get inside. So make sure you ask children what they think is going to happen with the ice before going to the second part of the experiment.

We used:
- six ice cubes
- a glass container with lid
- a cup
- one piece of each material: fabric, paper, kitchen foil, plastic
- a few rubber bands

We placed one ice cube in a cup. It should show us how fast ice melts naturally without any protection. So we could compare all other ice cubes to this one and see how good the material protects the ice. Then we used different materials to wrap all other ice cubes using rubber bands to hold the protective layer in place.
We waited for 2 hours before continuing our experiment. I was secretly looking at the ice cube in a cup to determine how long we need to wait. Ideally, this ice cube should be noticeably melted, so it is easier to compare with other ice cubes.
So when we unwrapped all ice cubes, we noticed that the fabric had done an excellent job.
We learned how different materials conduct heat. Metal (aluminium foil) is a good conductor of heat; that is why this material is used in making pans and pots. Metal quickly moves the heat from the flame to our food. Fabric isn't a good conductor of heat. That's why it's used to make blankets that keep us warm at night.
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