Question

Vanessa learns that helium is lighter than ordinary air, so it rises in ordinary air. From this information, which is the best prediction Vanessa could make about a helium-filled balloon? A. The balloon will explode. B. The balloon will sink to the ground. C. The balloon will rise in the air. D. The balloon will float, but not rise or fall.

Answer 1

Answer:

C. The balloon will rise in the air.

Explanation:

It is already established that helium is lighter than ordinary air. By gravity, the heavier things will drop down, while the lighter will push itself upwards. If a balloon is filled with helium, then the oxygen would be pushed downwards as the helium pushes the balloon higher.

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