Waves emitted from a moving source are perceived are perceived at a higher or lower frequency by a stationary observer.
CK-12 (High School)
What impact does the Doppler Effect have on sound waves?
HS-PS4-1 - Frequency, Wavelength & Speed, RST.1 - Analysis & Evidence
DEPTH OF KNOWLEDGE (DOK) LEVELS:
2,3Read this assignment in Actively Learn