Experiment Video:

 

  Tips:
Being a young scientist must not restrict you from the joy of music. So don’t contain yourself, let the party began. Try producing sounds with different objects and observe the pattern. As you know, scientist always keeps a record of his work. To help you with this, feel free to use the following freebie. Playing with sounds – Experiment (Free Download)                                                                                      

 

Reasoning:

To simply put, a sound is nothing but just a vibration. Sound happens only in our ears, mainly due to the reaction of our brain through signals from the nervous system. Two objects hit each other vibration is produced → it’s traveling through a medium (air) which is waves → reaches the eardrum which passes that signal through nervous system → to the brain, brain process the signal and surprise sound is produced.

For further clarity let’s take an example scenario.

Question : “If a tree falls in a forest and no one’s there to hear it fall, does it make a sound?”

Answer : The falling of the tree or any other disturbance will produce vibration of the air. If there be no ears to hear, there will be no sound.

* Reference taken from Scientific American Volume 50 Number 14 (April 1884)*

Scientific Learning:

Sounds are created when something vibrates, that shakes back and forth. This vibration sends waves of vibrations into the ears of the listener. When these waves reach our ears, they make our eardrums vibrate, and we hear the sound of the bell ringing. Sound always needs to travel through some kind of medium, such as air, water or metal.

The direction of sound waves – The sound wave travels in all directions. When it hits the listener’s ears, the sound can be heard.  The further a sound wave travels, the more it spreads, this makes it more difficult for us to hear a distant sound. So the nearer we are to a sound the louder it sounds to us.

Compressions are the parts of the sound wave where the particles of the medium through which the sound travels are squeezed together.  A sound’s volume, how loud or soft it is, depends on the sound wave. The more energy put into making a sound or a sound wave, the louder it will be.

Vocabulary:

Waves :  formed when a sound is made and that moves through the air and carries the sound

Vibration : the state of being swung back and forth

Nervous system:   is the highway along which your brain sends and receives information about what is happening in the body and around it

Signal : an object used to transmit or convey information

Direction :  the path along which something moves, lies, or points

 

 

  Reference:
All about Sound  Book by Lisa Trutkoff Trumbauer
The Sound Book: The Science of the Sonic Wonders of the World Book by Trevor

https://www.youtube.com/watch?v=3-xKZKxXuu0
https://www.youtube.com/watch?v=gdGyvGPZ1G0

 


I am scientist

I am scientist is a result of small effort to make huge impact on children. To stimulate the curiosity of young scientist towards science. Each idea will start with a experiment followed by reasoning the result , scientific learning, vocabulary (recap the big words used), useful reference website and books, along with free downloadable worksheets.

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