Turn the timer on, off and reset the timer while waves are moving. Practice counting waves passing a given point: Move the vertical ruler so that it is along the wave’s path. This will be the point where you watch waves pass and count them. Count 5 waves passing the ruler. Change the frequency and count again. Fill in the table by working together counting the waves and using the timer. Data: Number of Number of Number of Average number Number of frequency Time waves: waves: waves: of waves counted waves in 1 interval in 10 second second period Trial #1 Trial #2 Trial #3 10 50 seconds 10 10 seconds 10 100 seconds *To find frequency, divide the average number of waves counted by the time interval. 5. Talk about the data. Decide on a way your group can explain wave frequency to the class. Write your idea(s) on the lines. ___________________________________________________________________ ___________________________________________________________________ ___________________________________________________________________
Turn the timer on, off and reset the timer while waves are moving. Practice counting waves passing a given point: Move the vertical ruler so that it is along the wave’s path. This will be the point where you watch waves pass and count them. Count 5 waves passing the ruler. Change the frequency and count again. Fill in the table by working together counting the waves and using the timer. Data: frequency Time interval Number of waves: Number of waves: Number of waves: Average number of waves counted in 10 second period Number of waves in 1 second Trial #1 Trial #2 Trial #3 50 10 seconds 10 10 seconds 100 10 seconds *To find frequency, divide the average number of waves counted by the time interval. 5. Talk about the data. Decide on a way your group can explain wave frequency to the class. Write your idea(s) on the lines. ___________________________________________________________________ ___________________________________________________________________ ___________________________________________________________________
pHetWavesonaStringActivity.docx