Question

1. the drawing below represents five positions of a balloon after being released from a ship. the drawings of the balloon are not to scale compared to the altitude distances, but are to scale with each other. in order to make the balloon rise, the density of the gas put inside the balloon must be a) the same as the density of the air at sea - level b) more than the density of the air at sea - level c) less than the density of the air at sea - level

Explanation:

For an object to float or rise in a fluid (in this case, air), it must be less dense than the fluid. The balloon rises in air, so the gas inside it must be less dense than the surrounding air at sea - level.

Answer:

C. less than the density of the air at sea level