Wind Speed Worksheet

Both miles and knots (which stands for nautical miles) can be represented in feet:

1 mile = 5280 feet
1 knot = 6076 feet (approximately). A closer approximation is 6,076.11549 feet.

so, from miles per hour to knots, the conversion factor is 5280/6076 = .86899276...
(or .86897624... if you use the 2nd approximation of 6076.11549)

and, from knots to miles per hour, the conversion factor is 6076/5280 = 1.150757575...
(or 1.15077944... if you use the 2nd approximation of 6076.11549)

Using the above data, complete the following chart. Round off your answer to two decimal places.
(Note: these calculations were performed using the first values above. Answers may vary slightly due to round off error, but should be roughly the same)

Knots	MPH
1	1.15
3.48	4
6	6.9
8.69	10
10	11.51
23.46	27
44	50.63

Now, using the United States map from the map activity, convert the wind speed from each of the following cities into miles per hour: (the red answers were calculated using the information found at Purdue, the green answers were calculated using the information found on this chart )

1) Boise, Idaho

13 to 17 knots equals 14.96 mph to 19.56 mph; 15 knots equals 17.26 mph

2) Cincinnati, Ohio

8 to 12 knots equals 9.21 to 13.81 mph; 10 knots equals 11.51 mph

3) Kansas City, Missouri

23 to 27 knots equals 26.47 to 31.07 mph; 25 knots equals 28.77 mph

4) Spokane, Washington

8 to 12 knots equals 9.21 to 13.81 mph; 10 knots equals 11.51 mph

5) Oklahoma City, Oklahoma

18 to 22 knots equals 20.71 to 25.32 mph; 20 knots equals 23.02 mph

6) Jackson, Mississippi

3 to 7 knots equals 3.45 to 8.06 mph; 5 knots equals 5.75 mph

7) Edmonton, Alberta, Canada

less than 3 knots equals less than 3.45 mph; less than 5 knots equals less than 5.75 mph