Zephyr and Keiko are standing next to each other. Zephyr has a helium-filled balloon tied to his wrist, and both are about to enter a room where the ceiling fan is on, blowing air downwards. As they walk into the room, what happens to the balloon that Zephyr has tied to his wrist? Respond very briefly.
As Zephyr and Keiko enter the room with the ceiling fan on, the downward blowing air from the fan will push against the balloon, causing it to be forced downward. However, since the balloon is filled with helium, a gas lighter than air, it has a natural buoyancy that makes it rise. The force of the fan may temporarily push the balloon down, but as soon as Zephyr and Keiko move past the direct airflow from the fan, or if the force from the fan isn't strong enough to overcome the buoyancy, the balloon will rise again.