Your ears pop because they are adjusting to the change in pressure.
Because the air pressure is getting heavier so your ears pop.
Because of air- pressure.
It caused by change in pressure. When internal air pressure is higher than of surrounding it causes your ears to pop.
As you go up in altitude, the external pressure drops and this causes your ears to pop.
As the plane climbs, the pressure drops, even in a pressure cabin. The pop is your ears equalizing from ground pressure to altitude pressure.
Because of the dramatic air pressure change.
b/c of th high altitude
Bringing a Hamster on an airplane is not recommended, because of the fact, well When gaining Ascending or Descending, it causes air to fill up in your head, and make your ears pop, sense they are so small, with small heads and small ears. it probably would severely hurt them.
typically your ears pop when they undergo pressure of somesort. for intstance, when you go up in an airplane your ears pop due to altitude pressure and the air lock system in the plane. when you go diving your ears tend to pop because of all the water pressure being placed on your body.
Your ears pop in planes because the air high above the surface of earth is less dense than air near the surface has all the air above it pushing it down.
This also frequently occurs on landing mainly because of the difference in air pressure.