Question - To see which material insulates a hot drink the best.
- 5 different types of material - cardboard, cloth, foam/polystyrene, plastic and tinfoil.
- 5 cups/mugs (the same kind)
- boiling water (the same amount in each cup)
I think that the foam/cardboard will be the best insulator because it is thick and it'll trap the steam in the air like material. I think that the cloth will be the worst insulator because it is quite thin and has lot's of holes in it.
- Boil the jug.
- Prepare each cup by putting the material around it and on top of it.
- Record the temperature of the water.
- Pour the same amount of water into each cup.
- Put the lids on the cups and set the timer for 10 minutes.
- When the 10 minutes is up take the temperature again of each cup and record which has stayed the hottest.
All of the water in the mugs started of at 77C
This is the placings and statistic of each mug/cup -
1st - foam/polystyrene at 63C so it dropped 14C.
2nd equal - cloth and cardboard they both ended up at 58C dropping 19C.
3rd - plastic bag at 57C dropping 20C.
and in last place was the tinfoil at 55C dropping 22C.
We were correct that the foam/polystyrene was the best. but our hypothesis for the worst insulator was way off. The cloth turned out to be very good placing 2nd. It was a big surprise when the tinfoil placed last I think it shows that tinfoil is better at keeping solids hot then liquids.