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
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…
Preliminary Physics Module 1: The World Communicates
The wave model can be used to explain how current technologies transfer information
1.1 Describe the energy transformations required in one of the following: mobile phone:
Sound waves -> electrical signals, transformed by built in microphone
These signals are digitised (turned into 1s and 0s) and are transmitted as radio waves to a base station
The base station is connects the signals to switching centres…
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
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…
Wave- a repeating disturbance or movement that transfer energy through matter of space.
EX: water, light, sound, seismic (earthquakes), and electromagnetic (ultraviolet, radio, infrared, microwaves, x-ray)
Characteristics of Waves:
Produced by something that vibrates
Carry energy without transporting matter from place to place
Will travel only as long as it has energy to carry
The larger the wave- the more energy it carries and energy can spread out as the wave travels away…
number of waves in one second
13) _ is the point on a longitudinal wave where the particles are left densely
14)_ 340 meters per second
15)_ is the amount of time to make one wave
16)when period decreases frequency_
17) _ are the units of measurement for wave speed
18)the amplitude of a wave is directly related to the _ of a wave
19) _ is when a natural frequency equals the frequency of a vibrating object and as a result a dramatic increase occurs
20) _ is the part of a tranverse wave that results…
Properties of waves and sound.
a. Know and be able to describe the following:
Wave: A disturbance that transfers energy from place to place
Transverse wave: A wave that moves the medium in a direction perpendicular to the direction in which the wave travels.
λ (wavelength): The distance between two corresponding parts of a wave.
Compressional/longitudinal wave: A wave that moves a medium in a direction parallel to the direction in which the wave travels.
Intensity: The amount…
instance, but needs time to move back and
3. A wiggle in space and time is a Wave.
A.)Wave- a disturbance that repeats regularly in space and time and that is transmitted progressively from one place to the next with no actual transport of matter.
4. A wave cannot exist in one place, but must extend form one place to another.
A.) Light and Sound are examples that move through space as waves and are forms of energy.
II- Vibration of Pendulum (25.1)
1. Pendulums swing…
SOUND AND SIGHT OUTCOMESs
Identify situations where waves transfer energy.
Vibration in the air, in the water, in electric and magnetic fields.
Recall that sound is a wave and describe how it is formed and propagates
Sound is a wave and it is formed by a vibrational mechanical energy that propagates through matter as a wave.
Qualitatively describe the features of waves including wavelength, frequency, speed and amplitude.
Frequency: Is the amount of vibrations a wave produces…