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  What are good materials for designing ear defenders and why?

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Asked at 2010.09.25 02:44:30
I have been given an assignment in science, where i must design a pair of ear defenders, and explain what materials i have used and why i have used them. I would like to know which materials are most useful for blocking out sound, and why, hence the question.
Thanks,
J K.N
answer AggieAneil  Answered at 2010.09.25 02:44:30
some type of polystyrene (foam)

soft on your ears. insulates ears from sound. cheap.
answer BG123  Answered at 2011.06.06 09:09:23
I have been given this task too!
I would suggest foam/sponge!
Also use plastic on the outside as the hard casing!
This is all I have come up with, so if anyone has any ideas let me know!
Thankyou! ;D
answer 10.142.34.* Answered at 2012.05.04 06:17:04
Foam rubber would be the best material for the job. And they would be solid, energy absorbent & light
answer 10.142.34.* Answered at 2012.05.04 06:18:44
answer 3 10.142.34.*Answered at 2012.05.04 06:17:04

Foam rubber would be the best material for the job. And they would be solid, energy absorbent & light

awesome answer
answer 86.7.202.* Answered at 2012.05.24 12:24:46
Rubber = Rubber is good because it is has a lot of air bubbles in it. Sound takes a long time to travel through gases like air so rubber would be a good material to make ear defenders out of. Also some of the sound may reflect off the rubber.

polystyrene is also a good material but I dont know much info about the polystyrene so if you find any info then please tell
answer 212.139.46.* Answered at 2013.01.16 10:04:59
ppppppoooooooooo
answer 89.240.72.* Answered at 2013.03.13 14:27:18
is foam a type of polystrene? :0
answer 89.240.72.* Answered at 2013.03.13 14:29:44
what school do you go?
answer 90.199.120.* Answered at 2013.03.18 09:56:26
hi
answer 80.47.107.* Answered at 2013.04.15 08:43:03
i got this assignement aswell !!! any ideas,,?
answer 109.153.111.* Answered at 2013.04.24 12:04:16
ive been given this in science and i left it to late its due for tomoz n my teacher dosent take any excuses
answer 109.153.111.* Answered at 2013.04.24 12:06:11
i think foam because it molds itself into the controuy of your ears and the defender therefore stops sound from getting in it also absorbs sound,
answer 2.98.119.* Answered at 2013.05.02 12:14:39
Lol
answer 86.180.146.* Answered at 2013.06.01 02:47:13
I've got this assignment too any thoughts?
answer 86.24.71.* Answered at 2013.06.22 07:54:47
foam, rubber, polystyrene, vacuum, bubble-wrap sponge
answer 86.24.71.* Answered at 2013.06.22 07:55:24
well done
answer 86.24.71.* Answered at 2013.06.22 07:56:21
@answer10
no
answer 86.24.71.* Answered at 2013.06.22 08:02:18
answer 9 90.199.120.* Answered at 2013.03.18 09:56:26
hi
me: wow... that guy must really not have any friends O.o
answer TOLO  Answered at 2013.06.22 08:05:46
Wow, 'answer 18 86.24.71.* Answered at 2013.06.22 08:02:18'
you are so mean... and sassy ;)



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answer TOLO  Answered at 2013.06.22 08:07:28
Oh im sorry those were pretty small here you go
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answer TOLO  Answered at 2013.06.22 08:08:19
Add me on facebook Teerp Teerp
answer IIsuperwomanII  Answered at 2013.06.22 11:42:07
Waddup T-shirt refrence
answer IIsuperwomanII  Answered at 2013.06.22 11:43:04
Hey 'TOLO'
DO YOU MIND?
answer 194.80.20.* Answered at 2013.11.27 06:22:59
lol
answer 2.101.241.* Answered at 2014.10.07 09:07:50
Same assignment to make ear defenders all I know is that foam is good for the inside because it blocks out sound and insulates it.
answer Jacob  Answered at 2014.11.02 11:43:25
Help! Homework due Tomoz!!
answer 194.176.105.* Answered at 2014.11.04 13:20:31
Your mum
answer 2.100.182.* Answered at 2014.11.22 07:30:07
Me too is carbon fibre body good or not
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