Everyday Sound

Everyday Sound


Students will learn about everyday sound applications: music vs noise, doppler effect, deafness, etc

Remember this is your notes.

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Part 1: Everyday applications of sound

Source: Langhans and various other educators

Part 2: How do you hear? Causes of Deafness

Remember this is your notes; so pause and repeat as necessary

Source: Langhans and various other educators

These are the “S” in WSQ. You must have them under your video notes completed by the due date on the Unit Plan.

Doppler Effect:

1.When an automobile moves towards a listener, the sound of its horn seems relatively

      a. low pitched                   b. high pitched                        c.  normal


2.When the automobile moves away from the listener, its horn seems

      a. low pitched                   b. high pitched                        c.  normal


3.The changed pitch of the Doppler effect is due to changes in

      a. wave speed                    b. wave frequency


4.Circle the letter of each statement about the Doppler Effect that is true.

a.It occurs when a wave source moves towards an observer.

b.It occurs when an observer moves towards a wave source.

c.It occurs when a wave source moves away from an observer.

d.It occurs when an observer moves away from a wave source.


5.True / False: A moving wave source does not affect the frequency of the wave encountered by the observer.


6. True / False: A higher frequency results when a wave source moves towards an observer

7. Two fire trucks with sirens on speed towards and away from an observer as shown below.

      a) Which truck produces a higher than normal siren frequency?

      b) Which truck produces a lower than normal siren frequency?


How do you hear?


Source: various educators and Langhans; teachengineering.org

HOT Question: Sound

After you have watched the video and answered the summarizing questions, write a HOT question. See the directions above and on your Unit Planner.

Source: inspired by C. Kirch