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Sound Waves

Transcript: Spring Toys? Compression Mechanical waves are waves that have a medium. A medium is the matter a wave travels through to get to its destination. Not all waves need a medium. Waves that can only travel through matter are mechanical waves. With this prezi you will read about sound waves. You hear the sound when the sound wave reaches your ear. The wave has to be vibrated by other air molecules to get pushed to your ear. When it reaches your ear your inner ear sends signals your brain and you hear whatever sound caused. All About Sound Waves Wavelength Sound has waves? What Is A Medium? A medium is the matter a wave travels through. Sound waves travel through mediums like wood, water, and a lot of other things. Particles in these mediums are pushed together and move apart from each other as the sound waves travel through those mediums. Well How Do We Hear The Sound? Sound waves are compressional waves produced by noise and moving air molecules. Rarefaction Mechanical Waves Amplitude Trough Sound Waves A spring toy (Slinky) is an example of sound waves. Picture you pull a slinky all the way apart. When you release the force you are holding the slinky with but still holding on to it, you can see that the coiled spring toy shakes. That is what sound waves do to get to your ears. Crest

Sound Waves.

Transcript: Sound Waves. Three characteristics are used to describe a sound wave... Wavelength; is the distance from the crest of one wave to the crest of the next. Frequency; is the number of waves that pass a point in each second. Amplitude; is the measure of the amount of energy in a sound wave. Pitch is how high or low a sound seems. A bird makes a high pitch. A lion makes a low pitch. --Sounds also are different in how loud and how soft they are. The more energy the sound wave has the louder the sound seems. The intensity of a sound is the amount of energy it has. You hear intensity as loudness.

sound waves

Transcript: The frequency is the number of wavelengths that pass a point every second. Sound Waves An echo happens when a sound bounces off a surface. By: Kennedy, Madison , and Sophia A wavelength is the distance between one wave crest and the next. Amplitude is the height of a wave. By: Kennedy, Sophia, and Madison Frequency Amplitude is the height of the wave. Echo Amplitude A wave happens when a movement is repeated again and again. The waves we see most often are the waves that move across the surface of an ocean or lake. However, light and sound waves too,even though we can not see them in action. Frequency This is a high and low example of frequency. Wavelength Frequency Sound is caused by vibrations. As a sound wave passes a point in the air, the particles of the air are pulled apart and then squashed together. Sound Waves Wavelength Amplitude Light can be thought of as waves of electromagnetic radiation. sound travels as waves too. Roots of Facts Core More Facts Wavelength is the distance between one wave crest and the next.

Sound Waves

Transcript: Sound Waves A wave of compression and rarefaction, by which sound is propagated in an elastic medium Shape of Sound Wave Like any waveform, sound has the characteristics of wavelength, frequency, amplitude and speed or velocity. Graph of A Sound wave object causes virbration viration excites surroundind air molecules air molecules don't travel in this case they excite adjacent molecues, creating ripple affect DEFENSE speed of Sound Work Cites Noise Acoustical Engineer doodles Unwanted sound Unpleasant or disturbant Jumbles of sound waves E3 (165 Hz) to B5 (988 Hz) Musical Notes San Francisco extremely high sound waves can disrupt eardrum Sonic Weapon Stockholm watch lightning strike count accurately or time until thunder is heard divide seconds by 5 to get answer in Miles, or 3 for Km. (cc) photo by jimmyharris on Flickr http://www.school-for-champions.com/science/sound.htm Sonic Boom How They Travel Sonic & Ultrasonic Weapons http://en.wikipedia.org/wiki/Sonic_weapon Research photo frame Frequency is inversely proportional to the period T=period, F= frequency sonic boom is a thunder like noise caused by an object moving faster then speed of sound about 750mph (cc) photo by Metro Centric on Flickr Trumpet Assets these weapons are used injure, incapacitate, or kill an oppent work with Construction & Architect Engineers on performance spaces & recording studios Frquency & Period Important Details Booom!!! http://en.wikipedia.org/wiki/Sonic_weapon Sound Wave http://www.wikihow.com/Calculate-the-Distance-from-Lightning related to wave frequency because the noise of instrument is a sound wave (cc) photo by Metro Centric on Flickr Doppler Effect notes Budapest Results Notes Shape of Sound Wave speed of sound at sea level = 340.29 m / s =761.2 mph http://education-portal.com/articles/Acoustic_Engineer_Job_Description_and_Requirements_for_a_Career_in_Acoustic_Engineering.html (cc) photo by Franco Folini on Flickr innapropriate music played discourages teens from loitering Double click to crop it if necessary outlook How They Travel Y= sin(4x)+1 In Water=1482 m/s=3315 mph comply with local noise regulations Minimize highway traffic noise work in audio engineering design sound systems Bioengineering for medical devices (hearing aides) Place your own picture behind this frame! http://www.sky-flash.com/boom.htm details map lighting & Thunder Sonic Weapon Teenagers http://www.mediacollege.com/audio/01/sound-waves.html

Sound Waves

Transcript: Sound Waves By Britt Beery and Drew Tocci Sound Sound- is a disturbance that travels through a medium as a longitudinal wave Wavelength Wavelength- the distance between two corresponding parts of a wave Speed Speed is how fast waves travel. Waves can travel at different speeds like sound waves travel slower than light waves. Speed of Sound Speed of Sound- The distance a sound wave move in a given amount of time Pitch Pitch is an important property of sound. THe pitch of a sound is a description of how high or low pitched a noise is. Frequency Frequency is- wavelength Doppler Effect Doppler effect is the change in frequency of a wave as its source moves in relation to an observer. Loudness degree of the volume of sound Amplitude volume or the magnitude of sound speed

Sound Waves Powerpoint

Transcript: The speed of a sound wave depends on temperature. The higher the temperature of a medium is, the more energy is produced, which results in a faster vibration of the molecules causing the sound to travel faster. Mini Quiz Answers #2 Sound waves are used in many different ways such as for ultrasounds, echolocation, and sonar waves. Echolocation is used to help animals use the echos to "see" objects in their environment. Sonar also works similar to echolocation, but it is used to check ocean depths. sound waves: Producing and detecting sound cont... 4. Some of the different properties of sound waves are frequency, amplitude, and wavelength Sound Waves: conclusion Sound Waves: Definition Mini quiz Answers #4 1. What are sound waves composed of? 2. What are some ways that sound waves are used in real life? 3. What are some different types of sound waves? 4. What are the different properties of sound waves? 2. Sound Waves are used by ultrasounds in medicine, they are used by animals as echolocation, and they are used as acoustics during musical performances. Sounds are produced by multiple vibrations (rapid back-and-forth motions that can occur in solids, liquids, and gases.) Examples of mediums that sound waves can travel through are air, wood, a glass of water, and even metal. Particles in a medium vibrate back and forth as a sound wave carries energy from the source of the wave. Sound Waves Sound waves: video 3. some examples of sound wave are Ultrasound waves, Animal Echolocation waves, and Human echo waves. 1. Sound waves are composed of vibrations. Sound Waves: Properties sound waves: Producing and detecting sound Echolocation Sound waves: How they are used Mini Quiz answer # 1 The properties of a sound wave are: Frequency- a number of wavelengths that pass by a point each second. Amplitude-the maximum distance a wave varies from its rest point. Intensity-the amount of energy that passes through a square meter of space in one second. Speed of sound-the distance traveled per unit. Direction- the path the wave takes. Wavelength-the distance from one point on a wave to the next exact same point. Refraction- Area in a wave with low density Compression-Area in a wave with high density Daijah Figgures, Mary-Olivia Gbetibouo, and Makayla Donald Februrary 13, 2017 3rd Period Sound waves allow you to hear sound around you such as music, talking, an alarm or a bell. Sound waves travel as a type of longitudinal wave that travels through solids, liquids, and gases. Sound waves are a longitudinal wave also made up of a series of compressions and rarefactions. These pictures are examples of sound waves. All sound waves are longitudinal waves. Sound waves contain compression and rarefactions. Longitudinal waves are waves where the wave moves parallel (back and forth) with the wave. sound waves: video Sound Waves: Mini Quiz mini Quiz Answers #3 In conclusion, sound waves are waves that are made up vibrations , they are longitudinal waves that require a medium to travel, and their properties include: frequency, amplitude, intensity, wavelength, speed, direction, rarefactions, and compressions. Sound waves are used all the time in everyday life, in medicine, and even animals use them. sound waves experiment with water and speakers Sound Waves: Pictures

Sound Waves

Transcript: Sound Waves Are Awesome! We Can Graph them using Sine and Consine (: The compressions, in which particles are crowded together, appear as upward curves in the line. The rarefactions, in which particles are spread apart, appear as downward curves in the line. Adding sounds When you listen to the radio in the car, you hear more than one note at a time. The way it works is that you just take the sine functions for all of the notes and add them together. In the diagram below, you can see what happens when mutiple notes are essentially added together, these notes are A, C#, and E. (and if you notice, these three frequencies are forming an A major chord here.) • Wavelength; this is the distance from the crest of one wave to the crest of the next. • Frequency; this is the number of waves that pass a point in each second. • Amplitude; this is the measure of the amount of energy in a sound wave. Canceling Sounds You can cancel sound by adding frequencies together that are the reciprocal of each other. An example of this is used with any time of Noise canceling headphone. The way it works is first they figure out what kind of noise is reaching your ears. It figures out the sine waves of the ambient sounds around you. Then it creates additional noise whose sine waves cancel out the ambient sounds. You add together the original noises and new noises, and in essence, they cancel each other out, just like in a math problem. Another way of showing how this happens is below. On the right, there is a phase shift to create another sine wave with the same amplitude and period. Both of these waves sound exactly the same to the human ear, but structurally, they are the exact opposite, or reciprocal of the other. http://www.youtube.com/watch?v=gpCquUWqaYw&feature=related Sound Waves But wait, before we learn about graphing them, what is a sound wave? The three ways to describe/define and sound wave is by wavelength, frequency, and amplitude. If we change the number of cycles the wave completes every second -- in other words, if we change the period of the sine wave -- then we change the sound. Here are the equations and graphs of two other notes, C# and E. Sinusoidal waves (or sine waves for short) have turned out to be essential to understanding how our world works. One example is sound: whenever you play an instrument, or listen to music, you're listening to sound waves. These waves can be represented in the shape of sine waves. For example, the note A above middle C produces a wave shaped like . If you figure out the period (or phase) of this function you'll see that this wave has 440 complete cycles every second. So if you add these two sounds at the same time, it will link in like in the picture below which you can see these two sounds graphed together; And when this link up takes place and the waves fit together perfectly, they cancel out like in the image to the bottom right Sound Waves! What is a sound wave, and how sound waves work!

Sound Waves :)

Transcript: Reflection - waves transfer energy. when waves meet a barrier, the wave pushes against the barrier. the barrier applies an equal and opposite force causing the wave to go the opposite direction. amplitude Mediums with low temperatures are dense than mediums with high temperatures so sound waves travel more slowly in less denser mediums (for ex: gas) than in more denser mediums (ex: solids) Frequency of a sound determines the pitch of a sound. The biggest difference is that the vibrations are usually to small to see. Sound Waves frequency= 3 --------------------------- Waves travels through gas the fastest because the particles or not closely together. Waves travels through solids the slowest since there particles are close. By Raquel Marcelino wavelength ... small Refraction occurs because waves travel at different speeds in different mediums. When one side of a wave speeds up and slows down before the other side causes the wave to bend. trough frequency= 10 diffraction- when waves pass through an opening in a barrier, the waves are spread out. amplitude low pitch transverse wave low intensity high intensity high pitch 1. muscles push air up from your lungs 2. air travels through the opening between the vocal cords 3.the air causes the vocal cords to vibrate back and forth 4. the vibrating vocal cords produce sound waves 5. particles in the air vibrate back and forth transferring the sound through 6. the funnel shaped ear focuses the sound into the ear canal 7.a tiny tube called the ear canal transfers the sound into the middle ear. 8.in the middle ear the sound waves cause the ear drum to vibrate 9. Vibrations then travel tiny bones in your inner ear called the hammer, anvil, and stirrup to the inner ear. 10. The tiny hairs in the cochlea detect the sound vibrations. 11. The sound waves are sent to the brain as electrical signals. 12. The brain receives the signals and processes them as sound. To increase the intensity of a sound wave you must. Increase the volume. to increase the intensity of a wave you must have more mass or force behind it. crest ------ wavelength crest trough longitudinal wave

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