A doll’s house with roof tiles is exposed to a “storm” with the help of a strong fan. Surprisingly, the tiles on the side of the roof facing the storm stay put, while the tiles on the side sheltered from the storm are ripped off. This effect is exactly the same in real life storms.
How does it work?
With this house experiment there is a strong current flow over both sides of the roof. The side of the roof facing the fan and the airflow is at an obtuse angle, resulting in the tiles being pushed against the roof, with pressure keeping them there. This effect is stronger than the decreased air pressure caused by the fast flowing air current.
On the other side of the roof, there is no air flow pushing against the tiles, yet the rapid air current creates a lower pressure. The normal air pressure in the house is higher than this, and presses the roof tiles out from below.
