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Showing posts with label weather [wind] [4] [comprehension quiz]. Show all posts
Showing posts with label weather [wind] [4] [comprehension quiz]. Show all posts

weather [wind] [4] [comprehension quiz]

weather [wind] [4] [comprehension quiz]
The speed of air movement and therefore the air speed is measured using a cup anemometer as seen here.
The normal unit of wind speed is the knot (nautical mile per hour = 1.15 mph).
The Beaufort scale estimates wind strength without the need for instruments and based on the numbers 0 - 17.
This first example is:
0: Calm and still winds.
Smoke rises vertically.
This second example is:

2. Gentle wind at 6-11 kph (4-7 mph).

Wind can be felt on face; flags ripple.
This third example is:

4. Moderate wind at 20-28 kph (13-18 mph).

Paper and leaves scatter.
This fourth example is:

6. Strong wind at 39-49 kph (25-31 mph).

Umbrellas are hard to use; large tree branches move.
This fifth example is:

8. Gale at 62-74 kph (39-46 mph).

Twigs and branches break off trees.
5 question quiz [template]

1. How many wind speeds are in the Beaufort Scale?
0
17
18

2. Tree branches are breaking, what type of wind is it?
moderate
gale
strong

3. What is the unit of wind speed?
knot
millibar
mph

4. How is the Beaufort Scale a different method?
two different instruments together
it does't use any instruments
the instruments can be carried in a pocket

5. Which instrument measures wind speed?
barometer
thermometer
anemometer

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