Section: Mechanical Comprehension

77) What would happen to a balloon full of air if you moved it from above a water surface to ten feet below the water surface?

1. The balloon would explode.
2. The volume of the balloon would decrease.
3. The volume of the balloon would increase.
4. The volume of the balloon would stay the same.

The volume of the balloon would decrease. The pressure of the water would press inward on the balloon and cause it to shrink in volume.