Hi cp31 here we are learning a new unit in science sound.
Properties of sound
The properties of sound are:
- sound travels
- sounds can be reflected
- sound can be absorbed
- sound can be modified
- sound is caused by vibrations.
Facts
It is fact time! Some facts about sound are that:
- Erupting Volcanoes Are the Loudest Natural Sound.
- A Crying Baby is Technically Louder Than a Car Horn
- Sound Can’t Travel Through Space
What is sound
Sound is a series of vibrations those vibrations create waves those waves go into the ear and that is when the ear comes in.
Our outer ear picks up the waves and directs it to the middle ear in a part called the ear canal the waves push against an eardrum to make vibrations those vibrations make three tiny bones move. These bones are called the auditory bones remove the vibrations up into a shell part of the ear called the cochlea which is full of tiny hairs and liquid it turns it back into waves and brings it up into a nerve which sends those waves to your brain and then the brain processes what sound you are hearing.
Experiments
It’s experiment time!
Tuning fork: We looked at how sound move sin vibration waves
We tried to make a phonecall…
Here we looked at how sounds can be modified by different solid materials: