Question

4) When can we say that the wind speed
is strong​

Answer 1

Answer:

when the breeze flow very strong then we say that wind speed is strong

Answer 2

Classification of Wind Speeds

Beaufort number

Wind speed (km/hr)

International description

US Weather Bureau description

Effect of wind on the Sea

0 <1 Calm Light Wind Small wavelets

1 1-5 Light Air Light Wind Small wavelets

2 6-11 Light Breeze Light Wind Small wavelets

3 12-19 Gentle Breeze Gentle-moderate Large wavelets to small waves

4 20-28 Moderate Breeze Gentle-moderate Large wavelets to small waves

5 29-38 Fresh Breeze Fresh wind Moderate waves, many whitecaps

6 39-49 Strong gale Strong wind Large waves, many whitecaps

7 50-61 Fresh Breeze Strong wind Large waves, many whitecaps

8 62-74 Fresh gale Gale High waves, foam streaks

9 75-88 Stong gale Gale High waves, foam streaks

10 89-102 Whole gale Whole gale Very high waves, rolling sea

11 103-117 Storm Whole gale Very high waves, rolling sea

12-17 >117 Hurricane Hurricane Sea white with spray and foam

Movie about the Beaufort Scale of Wind Speeds