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Minor Versionm

by Procheta Mallik


Make models of ears of different sizes and hear through each, trying to differentiate through which one you hear clearer and/or louder



    • Be careful while handling scissors or any other sharp tool.

    • Make sure there are no sharp cuts on the side of the cone that goes inside the ear.

  1. Cut a cardboard piece of size 6 cm x  5cm and roll it into a cone shape.
    • Cut a cardboard piece of size 6 cm x 5cm and roll it into a cone shape.

    • Make diameter of one end small enough (~1 cm) so that it fits into your ear

    • Cut another piece of cardboard of size ~20 cm x 15 cm. Like above, roll it into a cone, keeping the diameter of one end small enough to fit inside the smaller cone

    • Outer diameter of the cone for the given size turns out to be around 6 cm.

    • Check whether the cones are fitting into each other properly; it should be convenient to detach and attach them routinely

    • Insert the smaller cone first to hear through and observe whether there is any difference in audibility.

    • Join the bigger cone to the smaller one

    • Continue listening to see if there's any difference in the loudness or clarity of sound.

    • Cardboard cones not fitting together.

    • End of cone too small or too big for your ear

    • How does the diameter of the cone affect hearing?

    • What happens if we use cones with large diameter at the end away from the ear?

    • What is the range of sound in decibels that is normal to human ear?

    • Make cones of different sizes similar to different animals and compare the difference in range of sounds which are compatible for humans and animals.

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