Sound WavesThe absolute technical definition is they move through vibrations created in the atmosphere. It is known to be a mechanical vibration traveling through a given matter as a waveform. Thus, it acclaims an alternative definition as a series of compressional and longitudinal waves moving through air or a given source of medium. Sound waves tend to bounce off a given surface or an object and vibrate against that particular object creating a sound. For instance, if two friends are talking in an enclosed room, their voices bounce off the objects present in that room, like wooden furniture, walls, bed, etc. and thus a sound is created around those objects enhancing a possibility in turn for 'em to listen to one another. If you consider them to travel in space, its existence is a total disapproval. The reason being is pretty obvious. Space is void. Vacuum. An empty space with no matter present at all. Hence, these waves have no particular medium to bounce off against to create a vibration. This is where the question of its existence in such an empty space totally dissolves. This was a short overview on how sound travels through different mediums and materials, like, solids, liquids, gases, plasma, etc. And also how it doesn't travel though vacuum and empty space mediums, is a notable differentiation to consider. Sound exist in a variety of forms. They strictly occur based on vibrations and the vibration of sound waves move in a backward and forward direction. Most of the sound vibrations are pretty obvious and its source of traveling is determined too. Other vibrations are known to be invisible vibrations and are determined by specific scientific experiments. Maximum amount of waves that we are able to listen to travel through air and other solid and liquid materials. It's due to these factors that sound waves are carried from one place to another. On a daily basis, the sound that reaches our ears are transmitted by our surrounding air. It's air that stretches and extends the capacity of the sound vibrations to reach our ears (recipient). When these sound vibrations reach our ears, our eardrums vibrate instantly which in turn sends a message to the brain and stimulates it to react accordingly. These waves traveling through solids and liquids is when they do travel through these mediums they slightly change and sound strange. They cannot travel through a medium of vacuum and empty space as there is no air nor any object to retaliate and react with. Dogs can hear ultrasonic and infrasonic sound waves at a much higher frequency when compared to humans. These waves help animals and insects to detect their danger. The waves act as a warning signal of their possible attacks. The speed of sound is 1,230 kilometers per hour (767 miles per hour). When sound travels through water, sound moves 4 times faster than what it transmits through air. The process of these waves in scientific…
Sound waves exist as variations of pressure in a medium such as air. They are created by the vibration of an object, which causes the air surrounding it to vibrate. The vibrating air then causes the human eardrum to vibrate, which the brain interprets as sound. Sound waves travel through air in much the same way as water waves travel through water. In fact, since water waves are easy to see and understand, they are often used as an analogy to illustrate how sound waves behave.
Sound is a phrase…
Writing folio: The Wave
Imagine you are Laurie. Give a speech to the class showing why you made the choices you did.
From a little kid I was taught about discipline. I was taught that I should always do the right thing like sharing my toys or looking both ways before crossing the road. Through failure of discipline I learnt about consciences. Before long I was able to judge how my behaviour affected on me, in either a positive or negative way.
Discipline is no doubt important in our lives…
When a ray hits a barrier and there is a change in direction.
A source of discourse that changes the direction of an incoming wave and does not
allow it to keep on going.
A line in the path of a wave or a line parallel to the wave at the crest.
A ray perpendicular to the wave that is in the direction that the wave is going.
This ray strikes the surface.
The ray that results after the incident Ray strikes the surface.
Normal Line: …
Speed of Sound
The transmission of energy by propagation of waves is one of the most common phenomena which we experience. Our lives would be radically different if we could not communicate with each other readily through the use of sound waves. Life would be impossible if it were not for the energy coming to the Earth from the Sun in the form of electromagnetic waves. While the effects of waves can be intriguing and sometimes beautiful, as in the case of light wave phenomena…
any wave, be it sound, water or electromagnetic.
Compressions- Areas of high pressure where springs or particles are close together.
Crest- The top of a wave.
Diffraction- waves spread out after passing through a gap.
Electromagnetic waves- these are electric and magnetic waves and do not need particles to pass the energy on.
Frequency- the number of waves produced per second
Hertz (Hz)- the unit used to measure frequency.
Interference- when one wave meets another
Longitudinal waves- the…
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Part 1 of 1 -15.0 Points
The speed of sound through air is
A.50 meters per second B.340 meters per second C.1500 meters per second D.3000 meters per second
Answer Key: B
Pitch is primarily dtermined by the ______ of the sound wave.
A.amplitude B.clarity C.decibels D.frequency
Answer Key: D
Loudness of pure tones depends on frequency and sound pressure level can be shown graphically using
A.equal loudness curves B.timbre…
When waves meet they combine in the region where they overlap to form a new wave. The new wave disturbance is the sum of the disturbances of the original wave. This is called the Principle of Linear superposition. The result of the addition or superposition of the wave disturbances is called interference.
The principle of linear superposition states that when two or more waves are present simultaneously at the same place, the resultant disturbances from individual waves
NATIONAL SCIENCE EDUCATION CONTENT STANDARDS
National Research Council, (1999). National Science Education Standards. National Academy Press, Washington, DC.
Charted here are the science education content standards covered in Chapter 12, Waves and Tides. As a result of activities provided for high school science students in this part of the curriculum, the content of the standard identified below by a check (√) is to be understood or the abilities are to be developed by the student.