Question

Sheets, tiles etc fixed on the roofs of buildings rise up when strong wind blow outside. Why does this happen?

Answer 1

When strong winds blow outside, some of the sheets, tiles etc fixed on the roof-tops rise as high-speed winds create low pressure in accordance to the Bernoulli's principle. But the pressure below the roof is unchanged. The pressure below the sheets naturally becomes a high-pressure region, which ultimately pushes the sheets up towards the lower pressure region.