which scale is used to measure wind?

Question

mercali, richter or beaufort

Answer 1

beaufort

Answer 2

Beaufort scale. It is a numerical scale ranging from 0(calm) to 12 (hurricane).It was first adopted by Admiral Beaufort in 1885 for use in ships at sea.Now it is of historic interest only.
The relationship between the estimated number and measured velocity is given by V=1.87√B³ where V is in miles per hour and B is the corresponding Beaufort number.

Answer 3

It is basically a way to measure the wind without an anemometer. Instead of just saying "The wind is blowing 8 mph", you say "The wind is making that tree bend over sideways, so it's a 4 on the Beaufort scale." It's just a way to measure the wind based on what it's doing to things.

Answer 4

Mercali & richter are used to measure earthquakes. It's the Beaufort scale. Here it is below.

Beaufort number Wind speed Mean wind speed (kt / km/h / mph) Description Wave height Sea conditions Land conditions Sea state photo
kt km/h mph m/s m ft
0 0 0 0 0-0.2 0 / 0 / 0 Calm 0 0 Flat. Calm. Smoke rises vertically.
1 1-3 1-6 1-3 0.3-1.5 2 / 4 / 2 Light air 0.1 0.33 Ripples without crests. Wind motion visible in smoke.
2 4-6 7-11 4-7 1.6-3.3 5 / 9 / 6 Light breeze 0.2 0.66 Small wavelets. Crests of glassy appearance, not breaking Wind felt on exposed skin. Leaves rustle.
3 7-10 12-19 8-12 3.4-5.4 9 / 17 / 11 Gentle breeze 0.6 2 Large wavelets. Crests begin to break; scattered whitecaps Leaves and smaller twigs in constant motion.
4 11-15 20-29 13-18 5.5-7.9 13 / 24 / 15 Moderate breeze 1 3.3 Small waves. Dust and loose paper raised. Small branches begin to move.
5 16-21 30-39 19-24 8.0-10.7 19 / 35 / 22 Fresh breeze 2 6.6 Moderate (1.2 m) longer waves. Some foam and spray. Smaller trees sway.
6 22-27 40-50 25-31 10.8-13.8 24 / 44 / 27 Strong breeze 3 9.9 Large waves with foam crests and some spray. Large branches in motion. Whistling heard in overhead wires. Umbrella use becomes difficult.
7 28-33 51-62 32-38 13.9-17.1 30 / 56 / 35 Near gale 4 13.1 Sea heaps up and foam begins to streak. Whole trees in motion. Effort needed to walk against the wind.
8 34-40 63-75 39-46 17.2-20.7 37 / 68 / 42 Gale 5.5 18 Moderately high waves with breaking crests forming spindrift. Streaks of foam. Twigs broken from trees. Cars veer on road.
9 41-47 76-87 47-54 20.8-24.4 44 / 81 / 50 Severe gale 7 23 High waves (6-7 m) with dense foam. Wave crests start to roll over. Considerable spray. Light structure damage.
10 48-55 88-102 55-63 24.5-28.4 52 / 96 / 60 Storm 9 29.5 Very high waves. The sea surface is white and there is considerable tumbling. Visibility is reduced. Trees uprooted. Considerable structural damage.
11 56-63 103-119 64-73 28.5-32.6 60 / 112 / 70 Violent storm 11.5 37.7 Exceptionally high waves. Widespread structural damage.
12 64-80 120 74-95 32.7-40.8 73 / 148 / 90 Hurricane 14+ 46+ Huge waves. Air filled with foam and spray. Sea completely white with driving spray. Visibility greatly reduced. Considerable and widespread damage to structures.

Answer 5

The best site for the Beaufort scale for wind speed is the Met office the web site is:-http://www.metoffice.gov.uk/weather/marine/guide/beaufortscale.html

Answer 6

Digital wind gauges or wind meters.

Things with cups that spin.

Typically in miles/hour.

Answer 7

a barometer.