sound

introduction

Hello world my name is Peaunuts941 in this blog post I will be talking about sound

 

vibrations

I have been learning about vibrations and the properties of sound. What is sound, sound is a series of beats you could think of it as a couple lines like this:  Vibrational colourful abstracts Colorful abstraction of vibration Abstract Stock Photobut of course, it is much more than that vibrations are sound waves when you talk pulses can bounce and that is the reason you can hear someone even if you are in a different room. In a soundproof room though it would be different in a soundproof room you wouldn’t hear anyone and no one could hear you even if you screamed.

kazoo experiment

the kazoo experiment was something our class did as an experiment for vibrations. this is how the kazoo looks when it’s finishedhow the kazoo works would be that sound would be able to go through but because of the material (which should be plastic), it makes a screeching noise.

 

what is sound 

 

sound is a series of vibrations. sound can also travel very fast at around 12,000 meters per second. it can also go through gas, liquid, and solids once the sound has reached a person’s body it will enter your ear and you will hear whatever sound it was. here is a picture of a sound wave.

 

the 4 properties of sound 

 

the four properties of sound are what make sound here are all of them.

  • sound can be absorbed
  • sound is made of vibrations
  • sound can be modified
  • sound can be reflected

sound can travel

 

how sound travels is by bouncing off objects; since sound can travel so fast, it bounces from room to room in milliseconds.

 

the tuning fork experiment

 

my  class did an experiment where we used a tuning fork to move salt on a plastic cover that was on top of a yogurt bowl here is a picture

In my finished experiment, you start by putting plastic on top of your yogurt bowl then you get a rubber band and tie it around the plastic then you put salt on your plastic then you bang your tuning fork on your table then put it very close to the salt but not touching then your salt should start moving lightly.

 

 pitch 

 

Pitch is how you measure how high or low the sound is. how you measure pitch by using hertz or Hz.  One hertz means that one sound wave hits your ear every second Human can hear from 20 up to 20,000 for example only dogs can hear a dog whistle well this is fully true it is just that dogs can hear higher pitch than humans. dolphins and bats can hear extremely high pitch so they can hear dog whistles as well in fact since dolphins and bats have such high pitch they actually use it during flying or swimming

 

volume 

you measure volume by knowing how loud a sound is you measure volume by using decibels or DB  a whisper is 30 DB a normal voice is 60 DB and a scream is 120 DB.  humans cannot hear sounds above 130 DB without getting their ears damaged this is also why you shouldn’t use earbuds for more than 1 hour a day.

 

reflection of learning 

 

personally, I really liked learning about sound I thought it was a little bit more enjoyable than my last subject sound anyway this will be the end of my sound blog I hoped you liked reading this blog bye