Observation · 8–12 min

Will a raisin move up in a glass?

You drop a raisin into water and it sinks. That makes sense. But what if the water is fizzy?

Two glasses: in sparkling water raisins float at different heights, in still water they lie on the bottom.

What do you think?

You drop raisins into a glass of freshly opened sparkling water. What will they do?