clix - Lesson 1: Sounds Around Us
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Introduction Adding Buddy Exploring Platform Exploring Units
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Lesson 1: Sounds Around Us
  • 1.1 Where are these sounds coming from?
  • 1.2 A science classroom like yours
  • 1.3 Activity- Make sound(s)
  • 1.4 Vibration cause sound
  • 1.5 Seeing vibrations
  • 1.5 Seeing vibrations (continued)

    Vibration cause sound

    You noticed that sound, in most of the designs, is generally produced by blowing, hitting or plucking. When two objects hit each other, they vibrate and the vibrations produce sound.

     

    For further exploration:1.5

    • Some vibrations stay for a longer time, that is why we are able to listen to the sound for a longer time. Example- vibrations of a bell, and of a steel plate.
       

    • While some vibrations die out quickly and their sound stops immediately like the banging of the table, the stamping of your foot on the ground, the splashing of water on the floor.

    What other examples can you think of?














     

    Try it out:

    Ring a bicycle bell and cover it by putting your palm on it, the vibrations stop immediately.

    Why do you think this happens?

     


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