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a vacuum is a space with no particles in it. Sound needs particles to travel through because it is just vibrations travelling through the air. Particles vibrate and hit each other and pass the vibration on. But if there is no particles, the vibration cant travel so you cant hear anything- that's why astronauts need radios to communicate, space is a vacuum.
Sound travels better through solids because the particles are tightly packed together so the vibrations are passed on more quickly whereas in a gas the particles are spaced further away from each other and can travel around, so they don't hit each other as often, so the sound vibrations take more time to travel around.
So yeah i guess a vacuum is a good material for an ear defender :)
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Why can you not hear any sound in a vacuum?
Sound is produced when a certain thing causes the gas, water, or solid around your ear to vibrate, which in turn, is then received by the ear drum. When you are in a vacuum, there is no gas, liquid, or solid that sound is able to travel by.
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.
What three ways can differ electromagnetic waves from sound waves?
Electromagnetic waves are transverse in nature where as sound waves are longitudinal. Electromagnetic waves can pass even through vacuum but sound waves are mechanical waves that means it needs badly a material medium Sound waves can be sensed by ear where as electromagnetic waves are sensed by eyes.
Why cannot we hear someone's screaming in the space?
Sound is a vibration of some medium (air, rock, etc.) that acts upon the ear (the ear senses these vibrations and our brains interpret). Since space is a vacuum, there is no medium for the sound waves to travel through to get to your ear. Forget what you've seen on Star Trek, you don't hear the roar of the ships engines as it flies bye, sorry.
What are the components of the ear?
There are three components of ear: The outer ear The middle ear The inner ear
What is a good material to filling the ear defender?
foam and plistyreine
Is tinned foil a good ear defender?
no
Why is rubber a good ear defender?
It will expand to fit the ear to close all inputs
Why is foam a good ear defender?
foam would be a good material to use for the inside of the ear defenders, as it will give more support, as well as being dense to conduct sound. Foam has particles with several small air particles, forming sound waves to absorb into it's surface.
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
Witch is a better conductor a earing or a magnet?
ear rings a sit is made of material but in case of magnet it is a stone so ear ring is a good conductor.So be ware of wearing a ear ring ear rings a sit is made of material but in case of magnet it is a stone so ear ring is a good conductor.So be ware of wearing a ear ring
Why is cotton wool a good ear defender material?
Cotton wool is NOT good for hearing protection as it only has an average attenuation of 7dB whereas you require 25-30dB in an average metal workshop for proper protection. DO NOT use cotton wool as hearing protection EVER. If one tiny little cotton fibre gets left behind you're in trouble - ear infection on the way!
Where can you buy ear vacuum equipment?
Ear vacuum equipment can be bought at most stores with a health and wellness section. Prices may vary by location.
What material can you use for ear defenders?
Foam, rubber, and cotton wool can be used for ear defenders.
Why can you not hear any sound in a vacuum?
Sound is produced when a certain thing causes the gas, water, or solid around your ear to vibrate, which in turn, is then received by the ear drum. When you are in a vacuum, there is no gas, liquid, or solid that sound is able to travel by.
What is the for flexible material that forms the structure of the ear?
cartilage
Why is cotton wool good for making ear defenders?
Cotton wool is a very poor ear defender against sound. The best hearing protectors are the preformed foam plugs that one rolls between the fingers to compress, then inserts into the ear canal before they expand. Some are more effective than others, but a noise reduction rating (NRR) of 35 is about the most effective.
