Waves and Sound Internet Lesson

(20 points)

Name:_______________________________            Date:____________        Period:_________

Go to www.dancingbearakitas.com/school.  Choose physics.  Choose course of study.  Choose sound.

 The numbers on this sheet correspond to the numbers of the web research links.

1.  What are waves?     A wave _____________________________ as it moves.

    What is a Transverse Wave?

    What is a Longitudinal Wave?

    Review the glossary and take the quiz.  Write your score here:__________.  Write any mistakes you made in your notebook.

2.  Try the interference applet.  Set wave 1 at wavelength 60, amplitude 25.  Set wave 2 at the same settings.  Set both waves at phase 0.  Start the applet.  This displays constructive interference.

                What does the sum wave (the blue wave) look like?

                Now stop the applet and change wave one to phase = 180.  This displays completely destructive interference. 

    What does the sum wave (the blue wave) look like?

3.    Watch the Doppler Effect Demonstration.

4.    Read about Determining the Distance to a Thunderstorm.  How long does it take for thunder to travel a mile?

       What is a simple way to determine the distance to a thunderstorm?

5.   Choose the Sound Lab.  Choose the Beat Applet. 

      Set frequency 1 at 440 hz.  Set Frequency 2 at 440.  Describe the sound.

      Set frequency 1 at 440 hz.  Set Frequency 2 at 441.  Describe the sound.

      Set frequency 1 at 440 hz.  Set Frequency 2 at 442.  Describe the sound.

      Set frequency 1 at 440 hz.  Set Frequency 2 at 442.  Describe the sound.

6.    Use Excel to make charts of your sound labs data (Tuning Forks, Pipes and Resonance).  Select chart type: X-Y Scatter.