A student creates a model of a sound wave coming from an object that is moving toward an observer to demonstrate the Doppler effect. Observer
- MED)
Using the model, which statement best describes the changes in the sound wave as it approaches the observer?
A The wavelength becomes longer and the pitch becomes lower.
OB The wavelength becomes longer and the pitch becomes higher.
C. The wavelength becomes shorter and the pitch becomes lower,
D. The wavelength becomes shorter and the pitch becomes higher