Difference between revisions of "Sound"
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| style="height:20px; width:300px; text-align:center;" |Blow harder down a tube it makes a louder '''sound''' because the [[vibration]] is bigger. | | style="height:20px; width:300px; text-align:center;" |Blow harder down a tube it makes a louder '''sound''' because the [[vibration]] is bigger. | ||
|} | |} | ||
+ | |||
+ | ==Key Stage 3== | ||
+ | ===Meaning=== | ||
+ | [[Sound]] is a [[longitudinal]] [[wave]] of compression that can pass through a [[material]]. | ||
+ | |||
+ | ===About Sound=== | ||
+ | : [[Sound]] [[wave]]s can pass through [[solid]]s, [[liquid]]s and [[gas]]es but [[sound]] cannot pass through a [[vacuum]]. | ||
+ | : [[Sound]] is transmitted by [[particle]]s colliding with one another. | ||
+ | : [[Sound]] travels fastest through a [[solid]] because the [[particle]]s are already touching so they have little distance to travel to pass on the [[vibration]]. | ||
+ | : [[Sound]] travels the slowest through a [[gas]] because the [[particle]]s in a [[gas]] are spread far apart so they take some time before they [[collide]] with the next [[particle]] to pass on the [[vibration]]. |
Revision as of 12:49, 20 October 2018
Contents
Key Stage 1
![](/images/thumb/0/0d/EarPicture.png/200px-EarPicture.png)
We hear sound with our ears.
Meaning
Sound is something that we hear with our ears.
About Sound
- A sound can be loud or quiet.
- A sound can be low or high pitched.
Examples
The sound of a mouse's squeak is very 'high pitched'. | A tuba makes a deep or 'low pitched' sound. |
Shouting, screaming and yelling are all loud sounds. | Whispering is a very quiet sound. |
Key Stage 2
Meaning
Sound is a vibration that passes through the air to our ears.
About Sound
- Sounds are caused by materials vibrating.
- Sound has to travel through a medium. If there is no medium, sound cannot get form one place to another.
- Sound travels through the air because it makes the air vibrate. If there were no air sound could not travel to our ears.
- Sounds can be high or low pitched.
- Sounds can be loud or quiet.
Pitch
Size
A small 'soprano' saxophone makes a high pitched sound. | An 'alto' saxophone makes the second highest pitch. | A tenor saxophone makes the second lowest pitch. | A large 'bass' saxophone makes a low pitched sound. |
Thickness of Strings
A regular guitar has thin strings and can make high pitched sounds. | A 'bass' guitar has thick strings and makes low pitched sounds. |
Length of Strings
The shorter strings on a harp make a higher pitched sound. |
Tightness of Strings
The pegs on the end of a stringed instrument can make the strings tighter or looser. |
Volume
When you hit a drum hard, it makes a louder sound because the vibration is bigger. | When you pluck a guitar string harder, it makes a louder sound because the vibration is bigger. | Blow harder down a tube it makes a louder sound because the vibration is bigger. |
Key Stage 3
Meaning
Sound is a longitudinal wave of compression that can pass through a material.
About Sound
- Sound waves can pass through solids, liquids and gases but sound cannot pass through a vacuum.
- Sound is transmitted by particles colliding with one another.
- Sound travels fastest through a solid because the particles are already touching so they have little distance to travel to pass on the vibration.
- Sound travels the slowest through a gas because the particles in a gas are spread far apart so they take some time before they collide with the next particle to pass on the vibration.