Find answers, ask questions, and connect with our
community around the world.

Activity Discussion Science & Technology Sound and its properties Reply To: Sound and its properties

  • Smita

    December 1, 2023 at 11:26 am
    Not Helpful

    When we hear something, we are sensing the vibrations in the air. These vibrations enter the outer ear and cause our eardrums to vibrate (or oscillate). Attached to the eardrum are three tiny bones that also vibrate: the hammer, the anvil, and the stirrup. These bones make larger vibrations within the inner ear, essentially amplifying the incoming vibrations before they are picked up by the auditory nerve.

    The properties of a sound wave change when it travels through different media: gas (e.g. air), liquid (e.g. water) or solid (e.g. bone). When a wave passes through a denser medium, it goes faster than it does through a less-dense medium. This means that sound travels faster through water than through air, and faster through bone than through water.

    Speaking (as well as hearing) involves vibrations. To speak, we move air past our vocal cords, which makes them vibrate. We change the sounds we make by stretching those vocal cords. When the vocal cords are stretched we make high sounds and when they are loose we make lower sounds. This is known as the pitch of the sound.

    The sounds we hear every day are actually collections of simpler sounds. A musical sound is called a tone. If we strike a tuning fork, it gives off a pure tone, which is the sound of a single frequency. But if we were to sing or play a note on a trumpet or violin, the result is a combination of one main frequency with other tones. This gives each musical instrument its characteristic sound.

    You can also check this link to know more about it.

For Worksheets & PrintablesJoin Now