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Gizmo doppler shift answer key

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Physical Science CP Gizmo - Doppler Shift Name: Tiffany Sanchez Date: 2-12-20 Per:2 Vocabulary​:​ Doppler shift, frequency, pitch, sonic boom, sound waves, wavelength Highlight your answers in either ​GREEN ​/ ​BLUE​ / OR ​YELLOW Prior Knowledge Questions ​(Do these BEFORE using the Gizmo​.) Have you ever heard a siren on a moving ambulance, fire truck, or police car? If so, what happens to the sound as the vehicle passes by? Sometimes when cars are passing I usually hear the car running and sometimes I hear the horn of the car. The change in the sound that you hear is called the ​Doppler shift​. Gizmo Warm-up The ​Doppler Shift G ​ izmo illustrates why the Doppler shift occurs. The Gizmo shows a vehicle that emits ​sound waves​ and an observer who will hear the sounds. 1. Click the ​PLAY SAMPLE ​button ( ). (Check that the Gizmo’s sound and your computer’s speakers are on.) What do you hear? I hear I police siren 2. Click ​Play​ ( ) and observe the sound waves emitted from the moving car. Click ​Pause​ ( compare the sound waves in front of and behind the car. ​What do you notice? Something that I notice is the length between them is about 900cm ) and 3. Use the ​Ruler​ to measure the ​wavelength​, or the distance between the lines, of the waves in front of and behind the car. (Note: The red circles represent every thousandth wave.) Wavelength in front of car:​ _____​600 cm​______ Wavelength behind car:​ ___ ...
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