All Flashcards
What is the effect of increasing the frequency of a wave, assuming constant velocity?
The wavelength decreases.
What is the effect of a wave source moving towards an observer?
The observed frequency increases (Doppler Effect).
What is the effect of a wave source moving away from an observer?
The observed frequency decreases (Doppler Effect).
What happens to the observed wavelength when a wave source moves towards an observer?
The observed wavelength decreases.
What happens to the observed wavelength when a wave source moves away from an observer?
The observed wavelength increases.
What is a periodic wave?
A wave that repeats as a function of both time and position.
Define the period of a wave.
The repeat time of the wave.
Define the frequency of a wave.
The number of repetitions of the wave per unit time.
Define the wavelength of a wave.
The repeat distance of the wave.
What is the Doppler Effect?
The change in observed frequency and wavelength of a wave due to the relative motion of the source and observer.
What is a periodic wave?
A wave that repeats as a function of both time and position.
Define 'period' in the context of a periodic wave.
The repeat time of the wave.
Define 'frequency' in the context of a periodic wave.
The number of repetitions of the wave per unit time.
Define 'wavelength' in the context of a periodic wave.
The repeat distance of the wave.
What is the Doppler Effect?
The change in observed frequency and wavelength of a wave due to the relative motion of the source and the observer.