Exam 1 Flashcards
(17 cards)
Simplest form of sound
Sine wave
Acceleration of objects is directly proportional to but…
Opposite in direction to displacement.
Magnitude of the restoring force is…
GREATER the more it is stretched.
Pure tone
Sine wave represents vibratory movement associated with the simplest sound.
SHM: The Swing
Greatest as it passes equilibrium
Period
How long it takes for an object to complete 1 cycle.
Frequency
Number of cycles an object completes per second (Hz)
Force and distance
Farther you go, the more (elasticity) it takes to get back.
Wavelength
Distance over which the wave starts at a point on one curve, goes through an entire cycle.
Sound
Disturbance in the particles of an elastic medium that propagates through the medium as a longitudinal wave.
FORM OF ENERGY (light, heat, sound)
What does sound require?
Source and Medium
Medium for sound…
AIR
Sound has which aspects?
PHYSICAL and PSYCHOLOGICAL
Sound does not travel…
It propagates!
Not skipping generations…
Sound must go from particle to particle in a medium.
Tuning forks
Movement/vibration of the forks compresses the air and creates higher density and pressure.
Elasticity creates the pitch of the sound.
Sound in the ear
Outer ear: sound waves
Middle ear: vibrations
Vibrations cause the hairs on the cells of the cochlea to move. This creates nerve signals that the brain understands.
