WebThe frequency of a wave is measured as the number of complete back-and-forth vibrations of a particle of the medium per unit of time. If a particle of air undergoes 1000 longitudinal vibrations in 2 seconds, then the frequency of the wave would be 500 vibrations per … The amount of energy that is transported by a sound wave past a given area of the … Sound Waves and Music. Lesson 1 - The Nature of a Sound Wave; Sound is a … WebApr 7, 2024 · Views today: 2.98k. Infrasound, also known as low-frequency sound, refers to sound waves that have a frequency lower than the lower range of audibility (about 20 Hz). Because hearing becomes less sensitive as frequency decreases, the sound pressure should be reasonably large for humans to experience infrasound.
Sound CBSE Class 8 Science Notes - Chapter 13
WebOct 13, 2024 · Sound Class 8 Extra Questions Long Answer Type. Question 1. Describe the construction and working of ears with diagram. Answer: We hear sound through our ears. The shape of the outer part of ear is like a funnel. When sound enters in it, it travels down a canal at the end of which a thin membrane is stretched tightly. WebThe amplitude of a sound wave is the measure of the height of the wave. The amplitude of a sound wave can be defined as the loudness or the amount of maximum displacement … linear positioning table
Loudness, Intensity, Pitch and Quality of Sound - Teachoo
WebThe speed of propagation vw is the distance the wave travels in a given time, which is one wavelength in a time of one period. In equation form, it is written as. v w = f λ. From this relationship, we see that in a medium where vw is constant, the higher the frequency, the smaller the wavelength. See Figure 13.8. WebSep 7, 2024 · Define frequency. Answer: The number of oscillations completed by a vibrating body in one second is called frequency. The unit of frequency is hertz. It is denoted by Hz. ... Sound Class 8 Extra Questions Value Based (VBQs) Question 1. On Ramesh’s 13th birthday, his father invited all his friends and their relatives. It was a big … WebNov 13, 2024 · Larynx is a part of the throat. It is responsible for production of sound. It, has two vocal cord which are stretched across the voice box or larynx in such a, way that it leaves a narrow slit between them for the air., When the lungs force the air through the slit, the vocal cords vibrate, producing, sound., 53. hot rod trio band