Sound ppt for grade 8

Sound ppt for grade 8. Colors of light (Grade 8) - Download as a PDF or view online for free. The small bones (ossicles) amplify the vibrations. A Figure of Speech is a departure from the ordinary form of expression, or the ordinary course of ideas in order to produce a greater effect. Find other quizzes for Science and more on Quizizz for free! 6 days ago · Answer: Empty Space Answer: The light refracts because it changes speed when it passes from the air into the raindrop. It includes crop production, materials, cell, friction, and pollution, etc. Project description continued: 3. limit. Feb 11, 2015 · 18. Instrument Creation Students presented their instruments to the class and explained the purpose of the materials used for the instrument. Download presentation by click this link. ppt / . Sound is a longitudinal wave propagating in an elastic medium Dec 22, 2020 · Grade 8 ScienceQuarter 1Episode 8: Colors of LightTeacher: Mark Joseph Valdez 1. Presentation transcript: 1 Grade 5 Sound Energy. pngSoundwaves-Traveling-to-an-Ear. The frequency of a given sound is 1. Feb 12, 2014 · Properties of sound. SOUND As in the Moon there is no air, astronauts couldn´t hear the sound of a rocket because sound wouldn´t propagate to them. Feb 10, 2020 · Grade Level Grades 6-8. Sound plays an important part in our daily lives. Noise pollution can be reduced by using silencers in vehicles, industrial machines, and home appliances reducing use of vehicle horns, running TV, radio and music systems at low volumes. The speed of sound waves depends on 2 things. 63/5 Rating. They include charity, purchased, butterscotch, and manufacture. 3) • The speed of any wave depends upon the properties of the medium which the wave is travelling. The properties of sound are reflection and refraction. 2 Sound Sound is produced when energy causes particles to vibrate. 1 of 35. Physics_Revision_-_SOUND_POWERPOINT[1]. Information about PPT on Sound covers topics like and PPT on Sound Example, for Class 8 2024 Exam. describe how light travels; 2. The formula of the frequency of a wave is given as: \ (\begin {array} {l}f=\frac {1} {T}\end {array} \) Where, f is the frequency of a sound wave and. 2 Pitch Some sounds are higher than others. Sound Waves – How They Travel. Sound travels in waves. It defines sound as vibration that the human ear can detect. Apr 3, 2017 · 20 likes • 16,857 views. Chapter Sound ppt. Google Slides: Click the link to make a copy that saves to your Google Drive. Sound. Understand the sound is a form of energy. Er Sandeep Bishla. com/ncert-solutions-class-8-science/chapter-13-so Apr 29, 2009 · Speed of Sound. Sound waves are examples of transverse waves 4. Grade 4 Science Quarter 3 Self-Learning Module: Properties and Characteristics of Light and Sound SCI4-Q3 Nov 23, 2014 · Waves carry energy from one location to another. 7 likes • 6,676 views. high blood pressure. investigate how sound is produced; 4. Dec 21, 2020 •. • Heat – is described as the total energy of all particles within an object. 2. Clicker Questions: Sound Waves Mar 7, 2017 · Mar 7, 2017 • Download as PPT, PDF •. The notes and questions for PPT on Sound have been prepared according to the Class 8 exam syllabus. In this sound year 4 PowerPoint, sound is explained over the course of 8 slides with some brilliant real-world examples and an exciting string telephones experiment for your class to try out themselves! This resource is also great as an introduction to World Radio Day, a celebration that happens every year on the 13th of February! Download presentation. Which is why this teacher-designed phonics sounds for kids PowerPoint resource is a time-saver in terms of lesson preparation. Anything that moves back and forth makes sound. Thornburg’s version. • 2L of water at 100°C has more energy than 1L of water at 100°C . 1 1. Any sound with a frequency below the range of human hearing is known as an infrasound. (b) taking 1,500 seconds to complete one vibration. 5 vibrations in one second. mp3. In this sound year 4 PowerPoint, sound is explained over the course of 8 slides with some brilliant real-world examples and an exciting string telephones experiment for your class to try out themselves! This resource is also great as an introduction to World Radio Day, a celebration that happens every year on the 13th of February! Presentation transcript: 1 Sound 4th Grade Science. Understand the properties of sound waves. Jan 23, 2017 • Download as PPTX, PDF •. 2 This vibrant, colourful PowerPoint has everything you need to teach kids about ch sounds in phonics. com. Download Presentation. Its a very attractive way to learn sound chapter very easily from this power point presentation. Sound Waves and the Magnetic Field of the Sun. These waves are different than light waves. I hear the water go SPLASH, SPLASH, SPLASH CLAP I hear the thunder go BOOM, BOOM, I hear the baby go WAAH, WAAH, BOOM WAAH I hear the car go HONK, HONK, I hear the duck go QUACK, QUACK, HONK QUACK I hear the cow go MOO, MOO, I hear the kids talking I go In this animated lecture, I will teach you about characteristics of sound, pitch of sound, loudness of sound and quality of sound. Access the PDFs of 'Chapter notes' and 'Most important questions' of Grade 8 Chapter 'Sound': https://byjus. hearing. If you are looking for powerpoints, handouts and other materials pertaining to our "Waves, Sound & Light Unit" you are in the right place! Click on the documents that you need. 1. R. AP 5 PPT Q3 – Mga Pagbabagong Kultural Sa Pamahalaang Kolonyal- DOWNLOAD. doc / . Examples: waves in water. This lesson plan outlines a science lesson for 8th grade students on sound waves. Amplitude is. 12 likes • 10,841 views. "—. Musical instruments. Moving back and forth is called vibrating. Jimnaira Abanto. Lesson 2Sound. The worksheets are useful for KS3 students, especially Year 8 students to revise and master the topic. Beginning to Understand Sound Waves. 5 kHz. 7 likes • 9,400 views. 9 Frequency, Wavelength and Energy. Sound (Physics) - Grade 7 - Download as a PDF or view online for free. An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. An English Language Seminar. Nov 8, 2020 · This video discusses Heat, Sound and Light. PowerPoint: Click the link to Presentation on Light and Sound ( PPT ) for Class 5 , 6,7,8,9,10 Students #pptonlight , #pptonsound , #lightppt , #soundppt , #ppt , #sound , #light Jun 3, 2017 · Audio Files/Snake Hiss. The first two slides in this ch sound ppt contain a range of words for investigation. This sound year 4 PowerPoint is a fantastic resource that can be used in a few different ways to get the most out of your children's learning experience! PowerPoints themselves are brilliant resources for presentations, whether it's at school in the classroom, or in an online lesson! PowerPoints are so handy because they are great at catching your kids' attention and keeping them focused Sep 21, 2018 · And this phonics sounds for kids PowerPoint isn’t just a beneficial resource just for your students, either. Sound waves reflect straight from a smooth, flat surface and produce a clear echo. January 27-28, 2019. t-l-1355-what-makes-the-sound-powerpoint. Mar 30, 2015 • Download as PPT, PDF •. T is the time period. Explain how the sound travels. . Twinkl Malta Ages 7-11 Primary Science Year 5-6 Energy May 2, 2020 · 1. The auditory nerve takes the signals to the brain. Nov 19, 2015 · Figures of speech. Speed of sound - Download as a PDF or view online for free. Types of journalistic writing ppt grade 8. Science Starter. -The speed of sound -interaction. cheeck this class 8 science ppt in claan hu] ss 8 students or below can refer this ppt and make their mind map for science. Anabelle Montevirgen. Wave passes through an area once in a second. The vibrating body is. describe through various activities that sound can be reflected in the form of echo. Measures to. 4. A stretched rubber band when plucked vibrates and produces sound 1) Production of sound :- Vibrating tuning fork Thread. softpedia. Rising Fighters. 0. Draw the waves you see around the ball. pdf), Text File (. This is a brilliant resource to effectively explain the process of the creation of sound and how we hear it. AP 5 PPT Q3 – Bansang Pilipinas- DOWNLOAD. infrasound: slow vibrations of frequencies lower than 20 Hz Any sound with a frequency above human hearing range is Mar 18, 2012 · How Sound is Created • When an object vibrates, it creates sound – loud, deep and long, short and high-pitched – pure, gravely, distorted, sweet, soft, piercing, buzz • Any sound your ear can hear is created by the mechanical back-and-forth motion of an object Powerpoint Templates. Vibration is the rapid to and fro motion of an object. ppt Review Activity . MECHANICAL WAVES. The objectives are for students to understand how the speed of sound varies in different materials, describe factors affecting the speed 6 days ago · Sound is a compressional wave which travels through the air through a series of compressions and rarefactions. These slides also demonstrate the different ways that ch The waves start from the ball and extend outward. wavelength 2. use or create tools and strategies to communicate across distance. Are Pitch and. 1 of 12. Wave examples. 1 RECOGNIZE WHAT FACTORS AFFECT THE SPEED OF SOUND. Light behaviors Properties of Light Index of Refraction of the Material Colors Enhanced Science (physics) Read more. txt) or read online for free. Pitch Properties of Sound, continued Humans hear sound waves in a limited frequency range. Middle School Instructional Materials. thank you. Mrs. sound energy ppt for y 5. Education. Surface waves are waves that occur when particles of the medium is perpendicular to the wave of motion. describe how heat travels in solid materials, through liquid materials and air. Temperature -higher the temperature, faster the sound 3. SOUND Sound is a mechanical wave that is an oscillation of pressure transmitted through a solid, liquid, or gas, composed of frequencies within the range of hearing and of a level sufficiently strong to be heard, or the sensation stimulated in organs of Introduction of Chapter 13: Sound - PowerPoint Presentation, Science, Class VIII in English is available as part of our Class 8 preparation & Chapter 13: Sound - PowerPoint Presentation, Science, Class VIII in Hindi for Class 8 courses. This PowerPoint is a fantastic way for you to teach the whole class Phase two, three and five letters and sounds. 2 Vocabulary Terms in 4th Grade Science Ch. Document Description: PPT on Sound for Class 8 2024 is part of Class 8 preparation. Students will learn how sound works with our What is Sound? Presentation. Pitch is the highest or lowest sound an object makes. Sub: Physics. Feb 9, 2010 · Amplituderefers to how much energy a wave has. SOUND. (example: drum). infer that sound could be reflected in a form of echo; and. • It varies with elevation due to air pressure, air density, and temperature. Explain the sound wave in terms of amplitude and wavelength. Sound passes through a tube called an auditory canal. S. Joni Albarico. Sound waves are collected by the ear lobe or pinna. Grade 8 - Module 5: Sounds lesson Plan about Sound - Free download as Word Doc (. ¡f6W $ÎÌ•©™Ã¡YPÍÊßl ôl>§¥’ ¤ ¹FƒÌ¦ŸaÎVÂe_ ðqK¢å‚dŸÚuMª‚ðº‰ožÓÞˆ{ ý!~¢?Æ€°Ob˜Ö‚—Ìá]ËêI-£m 9Fú5vɵ}ƒ ödhfö'Ø w¯ ó Jan 18, 2012 · Sound Day 1. 9. I have expertise in making educational and other PPTs. This is based on the Department of Edu Mar 7, 2010 · Air molecules 1) An object makes a sound by vibrating 2) The vibrations pass through air by making air molecules vibrate 3) These vibrations are picked up by the ear. The downloadable PDF guidance includes resource links to PowerPoint and Google Slides presentations for you to use in your classroom setting. Transverse (Mechanical) Waves. 1) Sound :-. (a) completing 1,500 vibrations in one second. Teaching Wiki. ÐÏ à¡± á> þÿ ~É> þÿÿÿJ> K>L>M>N>O>P>Q>R>S>T>U>V>W>X>Y>Z>[>\>]>^>_>`>a>b>c>d>e>f>g>h>i>j>k>l>m>n>o>p>q>r>s>t>u>v>w>x>y>z>{>|>}>~> >€> >‚>ƒ Dec 21, 2020 · Chapter - 13, Sound, Science, Class 8. Apr 7, 2015 · Apr 7, 2015 • Download as PPTX, PDF •. Soha Bedair. Sound needs a natural mean to propagate, as the air, the water or a stone. Sound versus Light. Frequency refers to the number of waves that pass in a second. This video was created to help students understand basic science concepts. Teaching sound to grade 8 Jan 23, 2017 · Sound ppt. The Speed of Sound (sec 7. Calculate the speed of sound. 6. waves Click on. Sound is a mechanical wave that is an oscillation of pressure transmitted through a solid, liquid or gas composed of frequencies within the range of hearing and of a level sufficiently PowerPoint: Click the link to open the presentation in view mode, then download and save the file. pptx. Answer: Nov 24, 2013 · Nov 24, 2013 • Download as PPTX, PDF •. Transparent Frequency Concave Lens Pitch Vibration Translucent Reflection Volume Opaque Refraction Convex Lens. 19. Sound travels in a compressional wave. 1 of 20. deepen their understanding of common emotions. impairment. It helps us to communicate with each other. OO WOA. The vibrations make sound waves. Unit 6 heat, light and sound - Download as a PDF or view online for free. Priya Jha. Twinkl USA 3rd-5th Fourth Grade Science Physical Science 8 Light and The Electromagnetic Spectrum. 26. Feb 11, 2014 • Download as PPTX, PDF •. 3 Sound waves Sound waves move out in all directions from a vibrating object. A good example of this are echoes and reverberations. Eg :- The sound of human voice is produced due to the vibration of the vocal cords. Several echos in a row are called reverberation. Objects that vibrate slowly, make a low pitch. In reflection, the sound wave turns back when it hits a barrier. permanent. Question and Answer. Principles of Sound and Vibration. Topic : Sound Made by : Kunal Aggarwal Class : IX B Roll No. The document discusses key properties of sound including amplitude, frequency, pitch, how it travels through different materials, and how some organisms use echo. Twinkl Northern Ireland The Northern Ireland Curriculum Foundation Stage Language and Literacy Talking and listening Attention and listening skills Identifying environmental sounds. The sound waves start at the source and move outward through the air. Lesson 2- How Sound Travels; Lesson 3- How Heat Travels; After going through this module, you are expected to be able to: 1. ÐÏ à¡± á> þÿ ï ñ Dec 22, 2020 · Grade 8 ScienceQuarter 1Episode 7: Effect of Temperature to the Speed of SoundTeacher: Mark Joseph Valdez A low-pitched sound corresponds to a low frequency. This document discusses the nature of sound and how it is produced and travels. Wi2 Science Revision Grade 3 Sounds PPT - Free download as PDF File (. png May 18, 2020 · Sound class 8. It explains that sounds have larger amplitude and frequency when generated with more force. February 10, 2020 . It is an introductory PowerPoint to the topic of sound and includes a simple experiment with string telephones. what_are_waves. These are high-frequency ch words that kids are likely to come across when reading. xml ¢ ( ĘÛrÛ †ï;ÓwÐpÛ±°Ó6M:–sÑÃU ™IúDZÛ¤ Ànüö]!;U3ò!A 7 #Ø ¿µ û Ó«‡Zdk0–+Y I>& ÈRU\. 8. There are 29 slides covering the definition of sound and echoes, animation showing what is meant by longitudinal waves, description of how musical instruments produce sound, graphs to show change in pitch and change in volume, definition of the Decibel, the human hearing range, ultrasound and noise and ÐÏ à¡± á> þÿ £ þÿÿÿþÿÿÿ› œ ž Ÿ Jan 30, 2014 · Heat, Light and Sound Sarah Jones news. pngstring-telephone-black-and-white. Tags in this resource: cupping-hand-to-ear-listening. Science. 17 likes • 23,371 views. 7. To produce sound we are to make vibrations in a body. The motion of particles in surface waves tend to decrease as it proceeds nearer to the surface. Download now. Nov 8, 2020 · This video discusses Heat, Sound and Light, specifically Heat. Sound G8. 2 Sound Waves. Answer: Journalism is the process of gathering and presenting factual information to the public. We hear a wide variety of sounds in our surroundings. Properties of sound - Download as a PDF or view online for free. This classroom resource is designed mainly for elementary grade teachers. 1 of 25. Jul 27, 2020 · 8. Resource Type Review Activity. Light and sound - Download as a PDF or view online for free. This is similar to how sound waves move invisibly through the air. irregular vibrations. Please note, PowerPoint and Google Slides have different functionalities, so the resources may have some differences. Free Presentations in PowerPoint format. Structure of ear. This way, they can listen to how Phase two letters and sounds are pronounced out loud, which can help them develop essential speaking and listening skills. Wavelength is. Sound waves travel directly from the source to the listener's ears through vibrations. STATES OFMATTER -In gas depends on velocity and mass -travels fastest in solids, then liquids because of orientation of molecules. Apr 16, 2013 · Apr 15, 2013 • Download as PPT, PDF •. 4 How does speed travel in different states of matter? • Sound travels fastest in a solid. You can have it on screen in your phonics lessons and pronounce the sounds with your pupils. AP 5 PPT Q3 – Bahaging Ginagampanan ng Kababaihan sa Lipunan- DOWNLOAD. Simple ABbieC. pngGirl-Hitting-Drum-With-Drumsticks. Sound Waves – Honors Physics. : 16 Subject : Science. 2 4. 3 WHAT IS THE SPEED OF SOUND • The speed of sound is 1130 ft/second at 20 degrees C. Sources of Sound When a person plucks a guitar string or bangs a drum, it will vibrate. • Two essential properties which effect wave speed • Inertial Property – the density of the material • The greater the inertia of the particles in the medium the less Mar 27, 2023 · 1. Aug 17, 2015 · SOUND. trough. In Class 8 Chapter 13 Sound Notes, the properties of sound and how sound is perceived by humans are discussed. noise pollution. MEDIUM -rubber slows vibrations, used as soundproofing 2. Sound carries energy. There are various types of journalistic writing and these are developed in different forms and styles. Give your students an introduction to sound waves in 8th grade with OpenSciEd! This unit meets NGSS standards MS-PS4-1 & 2 so you can trust the quality of the lesson plans. Download our complete set of ready-to-use PowerPoint slides for teaching Consonant Blends. luisagema. Let’s Practice “I Hear Noise” by Keora CLAP, CLAP, I hear the people go H. Sound is a mechanical wave that is an oscillation of pressure transmitted through a solid, liquid, or gas, composed of frequencies within the range of hearing and of a level sufficiently strong to be heard, or the sensation stimulated in organs of hearing by such vibrations. 1 like • 1,222 views. ÐÏ à¡± á> þÿ ™ › þÿÿÿ ž Ÿ ¡ š Sound Grade8 - Free download as Powerpoint Presentation (. There are invisible waves around us, some are travelling right through us. Teaching consonant blends and explaining them to students can be challenging. With in-depth information on sound waves, vibration and how sound travels through the different states of matter. Sound G8 - Download as a PDF or view online for free. Sound waves can also bounce back off hard surfaces, which is called an echo. Jan 22, 2012 · CHAPTER - 13 SOUND. Download more important topics, notes, lectures and mock test series for Class 8 Exam by signing up for free. Get NCERT Solutions for CBSE Class 8 Science with Extramarks - The syllabus for CBSE Class 8 Science includes different aspects of science that are Biology, Chemistry, and Physics, etc. Email: parmarshivam105@gmail. It has twice as many particles and therefore, twice as much heat energy. Sound Notes –. Amplitude. License. (d) completing 1. Getting this resource ready to use with Oct 4, 2019 · Question 2. crest 3. Temperature of medium- as temperature increases, the molecules move faster so the waves move faster. Pluck a guitar string and watch it vibrate back and forth. pngFeeling-Vibrations-in-Throat. This PowerPoint introduces the concept of vibrations and sound waves. Visible light (the light we see) is only a small portion of the waves around us. It can be a special repetition, arrangement or omission of Aug 6, 2017 · Colors of light (Grade 8) Aug 6, 2017 •. • The speed of sound is 758 m/hr at 20 degrees C. Sound grade 1 quiz for KG students. The longer the wavelength, the lower the frequency A. of. 3. describe how sound travels in solid, liquid and gas materials; and. The different wavelengths of light bend at different angles, so you can see the colors in visible light. Designed and approved by qualified teachers, this PowerPoint is beautifully Mar 6, 2023 · ARALING PANLIPUNAN 5 PowerPoint Presentations – 3rd Quarter. Since it includes different subjects, therefore, students face difficulties with it. Grade 7 . look at examples from TV, movies, music, and art to explore the ways that light and sound are used to convey emotions. Energy causes the matter in the medium to move up and down or back and forth at right angles to the direction the wave travels. òëöëè‚dÖ1Y1¡$ d –\Í^¿šÞn4Ø £¥-ÈÒ9ý‘R[. Turn off unnecessary appliances 2. Type of medium- liquids and solids make better conductors. 1 of 26. Shivam Parmar. com Chapter - 13, Sound, Science, Class 8 WHAT IS SOUND? Nov 18, 2011 · 1. This is based on th Sound waves can be reflected, absorbed, refracted or diffracted. explore light and sound through a variety of observations and experiments. 8 likes • 10,087 views. This presentation will give your children essential knowledge about sound. 76 likes • 35,579 views. The number of rarefactions and compressions that occur per unit time is known as the frequency of a sound wave. On the other hand, refraction is the bending of sound waves. 1 of 11. Share. 4 Sound and Light. ÐÏ à¡± á> þÿ þÿÿÿFÔA B J ú z Î Ï Ð Ñ Ò } ü PK !ÉY§ * [Content_Types]. The document discusses recalling facts about sounds and different Dec 28, 2012 · Onomatopoeia - Download as a PDF or view online for free. Soundwaves Explained. The visual aspect is important too 1 4th Grade Science Ch. 5 seconds to complete one vibration. 7 likes • 12,147 views. pngglockenspiel. Nov 30, 2014 · This great PowerPoint is a fantastic introductory resource for your KS2 sound lessons in science. Presentation on theme: "Grade 5 Sound Energy. AP 5 PPT Q3 W1 – Musika At Sining Sa Buhay Ng Mga Pilipino- DOWNLOAD. Sound energy - Download as a PDF or view online for free. Mar 30, 2015 · Sound viii. Use earplugs 3. Light and Sound Unit Overview - Grade 3 - Download as a PDF or view online for free. Email me for more PPTs at a very reasonable price that perfectly fits in your budget. The waves make the ear drum vibrate. PRODUCTIONOF SOUNDWAVES Sound is a form of energy which travels in the form of waves. Sound cannot propagate in vacuum, an empty space without air. These waves travel longitudinally. The pitch : is how high or low a sound is. 2 RELATE LOUDNESS AND PITCH TO PROPERTIES OF Waves, Sound & Light Unit - 7th & 8th grade Science! Waves, Sound & Light Unit. describe how loud and soft sounds are produced; 5. 3 What do we call a back-and-forth movement of matter? Jul 30, 2014 · The Physics Of Sound. HUMAN EAR Outer ear = pinna: collects sound from the surroundings. txt) or view presentation slides online. Speed of Sound. If you are facing difficulty making lesson slides for consonant blends, we are here to help you. 5. pptx), PDF File (. Sound Waves Shown through Graphs. A figure of speech is figurative language in the form of a single word or phrase. Loudspeakers convert the signal from the signal generator into sound Feb 22, 2018 · Powerpoint covering all the content for the Sound and Hearing topic taught in Year 8. List the steps that sound takes to let us hear? What type of wave is sound? and how does sound move (transverse or longitudinal)? What is the difference Jan 16, 2019 · Jan 15, 2019 • Download as PPTX, PDF •. Sound waves that strike a rough, uneven surface do not produce an echo but rather the surface will scatter or absorb the sound. L. This document is useful for Class 8. The waves travel along the ear canal. Vibrations are sent to the inner ear, from there it goes to the brain as signals via the auditory nerve. Read more. Sci8_Q1_Mod5_Sounds_Ver3 - Free download as Word Doc (. Aug 12, 2016 · Sound is produced due to the vibration of objects. Pitch is determined by the length and tension of Aug 17, 2021 · PowerPoint: Click the link to open the presentation in view mode, then download and save the file. docx), PDF File (. Sound hits our eardrum in waves just like the waves in the bowl hit the side of the bowl. Q: What are the characteri Aug 6, 2014 · Presentation Transcript. Here at Twinkl, we consider the teachers as well as their pupils. For example: Place a bowl upper side down and strike it with spoon. 3 likes • 2,153 views. (c) taking 1. Heat • Temperature – measured with a thermometer. amplitude 7. Eardrum (tympanic membrane) → vibrates when the sound incident. Studying sound Signal generators can produce signals over a range of frequencies and of varying amplitudes. Nov 2, 2017 · Sound ppt. Light and sound daily power point - Download as a PDF or view online for free. It produces hearing sensation in our ears. Powerpoint Templates. Follow. Jan 4, 2015 · The higher the temperature, the higher the speed of sound is. It explains that sound needs a medium, like air, to travel and describes how sound vibrations travel through the air to reach the ear, where they cause the eardrum and other structures to vibrate to Jan 7, 2012 · 3. 1 of 27. The cochlea turns these into electrical signals. Also, provided here is the extra questions for the chapter. Follow limits of noise level. Once you have downloaded the PPT, you will be able to enable editing. or. xw lv qh cq lc tz ws tg je qk