If the sun shines through windows and heats the air in a sealed room, the air temperature inside the room will increase. Because the room is sealed, the volume of air remains constant, so according to the ideal gas law (PV = nRT), if the temperature (T) rises while the volume (V) and amount of gas (n) stay the same, the pressure (P) inside the room will increase. In other words, heating the air in a sealed room causes the air molecules to move faster and collide more frequently with the walls, raising the air pressure inside the room
. This effect can be summarized as:
- Sunlight heats the air inside the sealed room.
- Air temperature increases.
- Since the room is sealed (constant volume), the air pressure increases proportionally with temperature.
Therefore, the air pressure in the sealed room will rise as the sun heats the air through the windows.
