PPT-The Nature of Sound EQ: What are the properties of sound?

An old riddle If a tree falls in a forest and no one hears it does the tree make a sound What is sound Sound Waves To a scientist a tree makes a sound whether someone hears it or not. Section 8.5. Key Terms. Audible Sound Waves. Infrasonic Wave. Ultrasonic Wave. Echo. Mach Number (. M. ). Pressure (. p. ). Sound Intensity. Decibel (dB). Categories of Sound Waves. Sound waves fall into three categories covering different ranges of frequencies.. Speed of a Wave on a String. What affects the speed of a . wave on a string?. The properties of the medium through which the wave travels determine the speed of the wave.. If the medium changes, the speed of the wave changes.. Ecology without Nature. Chapter 1. from the Introduction. The main theme of the book is given away in its title . Ecology without Nature argues that the very idea of "nature " which so many hold dear will have to wither away in an " ecological" state of human society. Strange as it may sound, the idea of nature is getting in the way of properly ecological forms of culture, philosophy, politics, and art.. Check last week’s homework. Sound Waves – some vocab. Each . cycle. of a sound wave includes one . condensation. and one . rarefaction. The . frequency. of the sound wave is the number of cycles per second that pass by a given location. Vocabulary Match. Directions: Match the words on the right to their correct definitions. 1. Form . of energy that you can hear and travels through matter as . waves. 2. Region . where the air pressure is lower than usual. Comparing Wave Properties & Energy. Essential Standard. 6.P.1Understand the properties of waves and the wavelike property of energy in earthquakes, light and sound waves.. Clarifying Objective. 6.P .. What are the properties of sound waves?. My Top 5 List of. “Unpleasant” Sounds. Record in your journal a top 5 list of sounds that are “unpleasant” to you. . What do you think causes a sound to be unpleasant?. EQ: What are the properties of sound?. An old riddle ….. If a tree falls in a forest, and no one hears it, does the tree make a sound?. What is “sound”?. Sound Waves. To a scientist, a tree makes a sound whether someone hears it or not.. by . Wilfred Owen. Possible interpretations of ‘Exposure’. Exposure . describes the . extreme weather . conditions which men were subjected to in the trenches and . what they also died . of. . A different type . Section 6.5 Beginning on page 327. Properties. Because logarithms are the inverse functions of the exponential functions, properties of logarithms are similar to properties of exponents. . Product Property:. Sound waves are longitudinal!. Sound can be explained by understanding:. Speed. Intensity. . and loudness. Frequency and pitch. Most people hear sound between the frequency of 20Hz and 20,000Hz. . Anatomy of Sound. True or False. 1. A . wave transports energy but not matter.. True or False. 2. As . the frequency of sound waves increases, the wavelength of the sound waves decreases.. True or False. 3. Sound . waves cannot travel through solids. REMINDER!. DON’T FORGET. TO . STUDY!. . Electromagnetic waves. Mechanical waves. Interference. Reflection. Refraction. Pitch. diagrams. 1. Define . the following words:. Crest . – . the highest part of a transverse wave.. Sound is a . longitudinal. . (Mechanical)wave caused by a . vibrating. object. Molecules . collide. , producing sound. Examples: . Vocal chords. , guitar or piano strings, tuning fork, etc.. . Longitudinal Wave.