Why do your ears pop up when you go to height?

Ears pop when ascending to higher altitudes due to changes in air pressure. As you rise, the external pressure decreases, creating a pressure difference between the outside environment and the air-filled space in your middle ear. The popping sensation occurs when the Eustachian tube opens to equalize this pressure, allowing air to flow in or out of the ear. This equalization helps maintain balance and proper hearing function.