Explain why holes are made in hanging banners and hoardings.
NCERT Solutions for Class 7th Science Chapter 8 Winds, Storms and Cyclones Page 92 Exercise Question 5
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Air exerts pressure. Wind blowing in high speed may break or displace many things. If holes are made in hanging banners and hoardings, then air can pass through these holes, which reduces the air pressure exerted on the banners and hoardings. That is why holes are made in hanging banners and hoardings.
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