Final answer:
The air pressure inside a balloon can be increased by heating the air, adding more air, or compressing the air by decreasing the volume of the balloon.
Step-by-step explanation:
To raise the air pressure inside of a balloon, there are several methods one could employ:
- Increasing the temperature of the air inside the balloon: Applying heat to the balloon will cause the air molecules inside to move faster and collide with the walls of the balloon more forcefully, consequently raising the air pressure.
- Adding more air into the balloon: Physically blowing more air into the balloon or using a pump increases the number of molecules inside the balloon, which raises the air pressure due to more frequent collisions of air molecules against the balloon's inner surface.
- Decreasing the balloon's volume: If the balloon is flexible, squeezing it to reduce its volume will increase the air pressure inside as the same number of air molecules are compressed into a smaller space.