• Question: Would a helium balloon rise faster in air or in water?

    Asked by 344perq48 to Vassilis, Tirso, Matthew, Dawn, Alexandra on 14 Mar 2019.
    • Photo: Vassilis Sideropoulos

      Vassilis Sideropoulos answered on 14 Mar 2019:

      If the balloon didn’t pop due to the sheer pressure underwater, perhaps it would have been faster in water… Yet, this question can’t be really answer as it is a complicated problem and the answer can change easily – you have to consider different things such as temperature, pressure, and salinity because these factors change density and thus the results!