Table of Contents Module 1


anemometer, it is used to measure wind speed. The more spins per minute, the greater the wind velocity (speed). Once the students have completed construction of the anemometer they should test it with a fan.


5. While holding the anemometer in front of an electric fan on low, count how many times the marker cup (with the black line) goes by. This is the number of spins or revolutions per minute (10 revolutions per minute is approximately 1 mile per hour).


Note: Average = (Trial 1 + Trial 2 + Trial 3 + Trial 4)/4 Trial #


1. 2. 3. 4. Average:


Have students compare their data collected on average spins (revolutions) per minute from the fan on low with each other. They can record their data on the student data collection sheet. Students can then find the class average (sum divided by amount of values, median (middle number), and mode (most often used number).


Student Name


Student 1 Student 2


Part IV: Measuring Wind in Multiple Locations Outdoor Classroom - 60 - 120 minutes


Note: This activity can be done on the water while sailing or on land. For seasoned sailors, have them place the boat in safety position before taking a reading. For first time sailors, have the coach place the boat in safety position. For students on land or on the safety boat have students go to various locations. As a challenge, have students take readings during puffs and lulls in different locations on and off the water so they begin to know the winds at their sailing location better.


Average RPM with fan on low Number of rpm (spins per minute)


23


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