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SRI KAYANGAN MONTESSORI

RESPECT, RESPONSIBILITY, RESILIENCE

Sound

How does sound travel?

Sound travels through the air.When a vibrating particle comes in contact with an air particle, they transfer vibrations to the air particle and this process continues until the vibrations become weaker and dissipates.
This also affects particle theory as vibrating particles cause molecules to break up and thus forming liquids or gases.When heat is present, atoms inside the molecules will slowly vibrate vigorously until they break apart from the molecule. When in a cold environment, particles will not vibrate as much as particles in a hot environment, therefore they don’t break apart but if the environment matches its freezing point, the particles will stick together, forming a solid.

How do we measure sound?

We measure sound using the unit Hertz or Hz for short. This unit is used to measure how much a single object is vibrating per second. An example of using this unit is: 1 Hz = 1 vibration per second. 
Let’s say this speaker. It is vibrating 200 times per second. Therefore its frequency is 200 Hertz.

Frequency and Amplitude

Frequency and amplitude is measured using an oscilloscope, a sound measuring device, that has a trace, a line that detects sound waves. Frequency is the Hertz of the object. We measure it using pitch. An object with a high pitch has sound waves travelling up and down each second. A low pitch sound has sound waves that travel up and down but not too vigorously.
Amplitude is to measure how loud a sound is. When there is no sound, the trace is a flat line. When there is a loud sound, the trace travels up and down vigorously. When there is a low sound, the trace travels up and down slowly.

Key facts

Amplitude is the audibility of the sound, meaning that a high pitch sound would have a lower amplitude than a low pitch sound. pitch is how high a sound sounds. Meaning a loud sound could have a low pitch and a soft sound could have a high pitch.





Thank you for reading, and you are now dismissed.

You can go into more details if you are interested.

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