# Shared Flashcard Set

## Details

Sound
Everything
15
Physics
12/22/2016

Term
 What Is Sound?
Definition
 Sound is a form of energy. It is that form of energy that makes us hear.
Term
 What is a Sound Wave?
Definition
 A Wave is a vibratory disturbance in a medium which carries energy from one point to another without there being a direct contact between the two points.
Term
 What is a longitudinal wave?
Definition
 A wave in which the particles of the medium vibrate back and forth in the same direction in which the wave is moving, is called a longitudinal wave.
Term
 What is a compression?
Definition
 A compression is that part of a longitudinal wave in which the particles of the medium are closer to one another that they normally are , and there is a momentary reduction in volume of the medium.
Term
 What is a rarefaction?
Definition
 A rarefaction is that part of a longitudinal wave in which the particles of the medium are farther apart than normal, and there is a momentary increase in the volume of the medium.
Term
 What is a crest?
Definition
 The elevation or a hump in a transverse wave is called a crest.
Term
 What is a trough?
Definition
 The depression or hollow in a transverse wave is called a trough.
Term
 What is wavelength?
Definition
 The minimum distance in which a sound wave repeats itself is caleed its wavelength.
Term
 What is Amplitude?
Definition
 The maximum displacement of the particles of the medium from their original undistyrbed positions, when a wave passes through the medium.
Term
 What is time-period?
Definition
 The time required to produce one complete wave(or cycle) is called time-period of the wave.
Term
 What is frequency?
Definition
 The number of complete waves (or cycles) produced in o0ne second is called frequency of the wave. SI UNIT-Hertz(Hz)
Term
 Speed of Wave
Definition
 The distance travelled by a wave in one second is called velocitu of the wave (or speed of the wave).
Term
 Formula of Frequency
Definition
 Frequency= 1/Time Period
Term
 Velocity of a wave
Definition
 Velocity=Frequency * Wavelength =f *  λ
Term
 How is sound produced?
Definition
 Sound is produced when an object vibrates (moves back and forth rapidly).
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