There's even some with vent holes, used for the thumb and smaller than an ant. Another variation in a bowling ball deals with the depth of which the bowler’s fingers grip the ball.

The bowling balls in candlepins are the smallest and lightest of all three styles of bowling, weighing in at just under 3 pounds. Like duckpins, the bowling ball has no holes, and the bowler is ...

All of these balls have the same volume, as spheres of the same size that have holes drilled in. ... → density of 12-pound bowling ball = 5,448 grams / 5,452 cm 3 = 0.99 g/cm 3.