Quintin is standing in a field holding a helium-filled balloon on a string. He lets go of the string. What happens to the balloon after Quintin releases it, and why?

Provide a very short response.
The balloon will rise into the air after Quintin releases it. This occurs because helium is less dense than the surrounding air, and the balloon is buoyant. Buoyancy is a force that acts in the opposite direction of gravity. Since the helium inside the balloon has a lower density compared to the surrounding air, this difference in density creates an upward force, making the balloon float upwards away from Quintin.