Explain why holes are made in banners and hoardings. Class 8
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Explain why holes are made in banners and hoardings. Class 8
Explain why holes are made in banners and hoardings. Class 8
Answer:
Holes are made in banners and hoardings to prevent wind buildup behind them. Here's why this is important :
- Wind Pressure: When strong winds blow against a solid surface, they create high pressure on one side. If the banner is solid, this pressure can cause it to tear or be blown away.
- Airflow: By making holes, the wind can flow through the banner, reducing the pressure differential. This allows the banner to withstand stronger winds without being damaged.
- Stability: Holes help maintain the stability of the banner, ensuring it remains in place and does not flap excessively, which can lead to wear and tear.