Mechanical Waves (Doppler Effect). A. Assimilation (15 minutes)...

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A. Assimilation [15 minutes) Statement: "The Doppler effect is also observed with light. In the case of light. it's the color that changes. If an object is moving away. it becomes slightly redder: if an object is approaching. it appears bluer." H from this statement. how will Doppler effecfhelp the astronomers? Explain your answer. KESSESSMENT True or False ' Low sound waves are low Pitch Short waves are Eow pitch When the car moves away from you. its horn seems low pitch The Doppler effect occurs when an observer moves towards a wave—making source. The Doppler effect occurs when an observer moves away from a wave—ma king source. Doppler effect can be experienced with sound. pitch and frequency When the frequency is higher what happens to the wavelength? The frequency decreases when the source slows down as the source approaches the listener. When the ambulance moves at a constant speed. a stationary observer detects a frequency that is lower than that emitted by the siren. Then the ambulance is moving towards from the observer. FOPOT'JQ'SNPWN.' 1A

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Mechanical Waves (Doppler Effect)