Excellent website for random science questions!

[Frrrrightattendant]

here

We found it when ds asked how heat can crack glass.

I haven't explored it much further yet but hopefully it'll be useful

excellent thank you

DS asked why bubbles appear if you leave a glass of water overnight and all the websites I found I couldn't understand the answer myself let alone explain it to him [hblush]

Fabulous site; thanks!