Question

all important question of sound sub.science class 9

Answer 1

define frequency answer is number of times an object vibrates in one second
define Amplitude the magnitude of the maximum disturbance in the medium on either side of the wave value is called amplitude of the sound
define speed
answer is the speed of sound is defined as the distance with a point on a wave such as a compilation error a fraction Travels per unit time
define wavelength
the distance between two successive compression or two successive refraction
define crust
peak is called the trust
define tough and pitch
a valley is called the truck of the wave and how the brain interprets the frequency of animated sound is called pitch.
state the characteristics of sound wave.
frequency amplitude and pitch
what are longitudinal and transversal waves
English waves the individual particles of the medium move in a direction parallel to the direction of propagation of the disturbance is longitudinal waves
a transverse wave is the one in which the English of particles of the medium more about the mean position in the direction perpendicular to the direction of wave propagation
what are mechanical waves
sound waves are characterized by the motion of the particles in the medium and are called mechanical waves



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define compression refraction volume vacuum medium propagation vibrate sound and waves
compression and the regions where particles are crowded together and represented by the upper portion of the curve
race actions are the reason of low pressure the particles are spread out
the volume is the perception of loudness from the intensity of a sound wave
a completely empty space where there is no air or no other matter is called vacuum
the matter of substance through which sound is transmitted is medium
splitting and information of Ideas widely is called propagation and vibration means a kind of rapid to and fro motion of an object sound is a physical sensation sense by a years a wave is a disturbance that moves through a medium when the particles of the medium set neighbouring particles into motion