Quiz 1 Flashcards
How would you describe sound waves?
Longitudinal pressure waves travelling in a medium
What happens when sound waves travel through air from the source to the listener’s ear?
air molecules oscillate parallel to the direction of travel
Who first measured the speed of sound in the 16th century?
Marin Mersenne
How would you describe longitudinal waves?
particle motion is parallel to the wave direction
What are sound waves?
longitudinal compression waves in a medium
Who first suggested that sound might travel in waves?
Aristotle
What do standing waves contain?
nodes and antinodes
What occurs in Simple Harmonic Motion?
restorting force is proportional to displacement
According to the wave equation, what happens if you double the frequency of a sound wave travelling in the air?
the wavelength will half
What are some examples of simple harmonic motion?
a weight bouncing up and down on a spring, a plucked guitar string and a simple pendulum oscillating
What happens to sound waves travelling from water into air?
speed and wavelength change
What did Joseph Fourier discover?
Complex waves can be represented as a sum of simple waves
