Explain why holes are made in hanging banners and hoardings

cbse
cbse-class-7-science
wind-stroms-cyclones

#1

Explain why holes are made in hanging banners and hoardings.
Answer:
Since air exerts pressure, wind blowing at a high speed may break or displace things. If holes are made in hanging banners and hoardings, then air can pass through these holes. This will reduce the pressure exerted by air on the banners and hoardings and these will not fall easily.