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because it is the best material because it absorbs the sound the best, it is also dense so it can conduct sound. Foam has particles with several small air particles, forming sound waves to absorb into its surface.
Wiki User
∙ 10y ago
Wiki User
∙ 12y agoThe outer shells are often made from ABS plastic or Polycarbonate for high-quality products, while the inner part is usually Polyurethane foam. The hard outer shell reflects most sound energy away while the soft inner part absorbs sound energy that has been transmitted through the outer shell.
Wiki User
∙ 12y agobecause cotton doesnt absorbed sound very well which stops the sound from reaching your ears as by the the time it has got through the cotton the sound is too weak to hear :)
Wiki User
∙ 12y agoa good material is rubber and foam as it blocks out the sound!
Wiki User
∙ 15y agoPolystyrene is a good insulator just like thermoplastic there for you could use either polystyrene or thermoplastic to make ear defenders.
Wiki User
∙ 9y agoPlastic is a good material to use because it reflects sound and if the sound is reflected it won't reach your ear so you won't be able to hear it.
Wiki User
∙ 11y agothermoplastic,polystyrene, and foam rubber because they are all goodinsulatorsand are soft to have a good comfort level for the ear
Wiki User
∙ 12y agohard plastic and Foam or plastic.
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How does putting your ear to the ground help you hear better?
Hearing is a result of vibrations. The sound waves move through the air and vibrate your ear drum. The vibrations are translated by the brain as familiar sounds. Similarly, walls and doors resonate to the same sound waves and act like giant ear drums. By placing your ear to the door, you are effectively able to "transfer" those vibrations from the door (or wall) to your ear and hear, more clearly, what is happening on the other side.
Forms framework of outer ear?
The external ear is a cartilaginous structure, covered by thin skin. Elastic cartilage
What instrument can you carry in your ear?
an ear drum!
What do scientists use to study the ear?
a model of a ear
Is an ear a tissue?
It depends on what part of the ear you are referring to. The internal components that aid in your hearing are collectively an organ. If you are referring to the external ear (what you see sticking out of your head), that is collectively made up of tissues (cartilage, epidermis, dermis) in order to create a working structure that aids in the workings of the organ.
What material can you use for ear defenders?
Foam, rubber, and cotton wool can be used for ear defenders.
Why is plastic a good material to use for ear defenders?
Plastic (in conjunction with a couple of other materials) is a good choice for ear defenders for a number of reasons. First, it's tough and effective. It's also fairly cheap, readily available and easy to work with. Plastics come in a wide variety of types and with as wide a range of characteristics. Can anyone lookaround himself in a day and not see something made of plastic that is in use? Plastic is an excellent material from which to make ear defenders.
How do ear defenders protect your ears?
Ear defenders protect your ears by absorbing the sound and fizzling it out
Where do people wear ear defenders?
people wear ear defenders because incase of a high pitch sound the ears defenders absorb the sound and then you don't have an ear infection.
How do ear defenders protect your ear?
Well, ear defenders absorbs the sound from going to your ear, if you don't wear ear defenders when your working in loud noises your ear can be damage.
Who needs to wear ear defenders?
The people who wear ear defenders are the people who live or work in noisy environments, the Ear defenders protect them from loud noises, For example a builder might wear ear defenders to prtect his ears from the loud noise of the construction site. The noise may damage, His/Her ears.
What does an ear defender particle diagram look like?
You have your ear defenders. Then the sound waves hit the ear defenders and bounce off it.Other answerFirstly you draw the ear defender. Most likely sideways.Secondly, you can draw the materials you want to use in order and add what the particles look like in each material - close together, far apart etc.Hope I helped XD
Why do people wear ear defenders?
people wear eardefenders because some peoples ears get really cold and they can get an ear infection that's why people wear ear defenders
What part of the ear is protected when wearing ear defenders?
Well, ear defenders will sit over your whole ear protecting all of it. But the part that's important to protect is the inner ear, that's where the actual hearing takes place.
Who wears ear defenders?
work men
Why do road diggers need ear defenders?
Because digging roads is very loud work and will damage your hearing if you don't wear ear defenders.
How do ear defenders reflect sound waves?
Ear defenders don't reflect sound waves, they absorb or reduce the amplitude of the sound.
