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Subjects
Science CBSE
Class 7
Winds, storms and cyclones
Textbook questions
6.
Answer briefly IV
Exercise condition:
3
m.
Explain why holes are made in hanging banners and hoardings.
Holes are made in the hanging banners and hoardings so that
air can pass
water can pass
air cannot pass
through it. It also
gives
reduces
increases
the impact of
water pressure
temperature
air pressure
and helps the banner to withstand the
temperature
pressure
humidity
. Thus, the hanging banners and hoardings remain intact.
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