The daughter bubbles' rapid expansion gives the foam buoyancy.
According to the Daily Mail Dr Rodriguez-Rodriguez said: ‘Buoyancy leads to the formation of plumes full of bubbles, whose shape resembles very much the mushrooms seen after powerful explosions.
‘And here is what really makes the formation of foam so explosive: the larger the bubbles get, the faster they rise, and the other way around.'
He said this is because fast-moving bubbles entrain more carbonic gas.
