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<tem xmlns="http://www.teachengineering.org/tem/elements/1.0/" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.teachengineering.org/tem/elements/1.0/ http://www.teachengineering.org/schemas/tem.xsd"><identifier>http://www.teachengineering.org/view_lesson.php?url=collection/cub_/lessons/cub_soundandlight/cub_soundandlight_lesson5.xml</identifier><docType>lesson</docType><format>text/xml</format><language/><title>To Absorb or Reflect… That is the Question</title><creator>Integrated Teaching and Learning Program, </creator><keywords><keyword>sound waves</keyword><keyword>acoustics</keyword><keyword>absorption</keyword><keyword>sound</keyword><keyword>acoustical engineering</keyword><keyword>acoustical engineers</keyword><keyword>noise</keyword><keyword>echo </keyword></keywords><vocabulary><word>Absorption</word><word>Acoustical Engineer</word><word>Acoustics</word><word>Echo</word></vocabulary><summary>This is the last of five sound lessons, and it introduces acoustics as the science of studying and controlling sound. Students learn how different materials reflect and absorb sound. </summary><engrConnection>Acoustical engineers help create environments in which we can hear the sounds that we actually want to hear and omit the sounds that we have no desire to hear. For instance, classrooms are designed so that the teachers can hear the students, and students can hear the teachers. Theaters are designed so that the audience can hear the actors. Movie theaters are designed so that you can hear the movie, and the sounds of conversations around you are muffled. </engrConnection><learningObjectives><learningObjective>Define acoustics as the science of studying and controlling sound.</learningObjective><learningObjective>Explain that acoustical engineers help design spaces where some sounds are enhanced and others absorbed.</learningObjective></learningObjectives><timeRequired unit="minutes">20</timeRequired><publisher>TeachEngineering.org</publisher><contributors><contributor>Teresa Ellis</contributor><contributor>Frank Burkholder</contributor><contributor>Abigail Watrous</contributor><contributor>Janet Yowell</contributor></contributors><references><reference>http://www.cabq.gov/kimo/pictures.html</reference><reference>http://www.kettering.edu/~drussell/Demos/RT60/RT60.html</reference><reference>http://searchsmb.techtarget.com/sDefinition/0,,sid44_gci213525,00.html</reference><reference>http://www.osha.gov</reference></references><eduStandards><eduStandard><id>S11416EB</id><locale>International_Technology_Education_Association-ITEA_STL_Standards</locale><type>Technology</type><description>J. Materials have many different properties.
</description><lowgrade>3</lowgrade><highgrade>5</highgrade></eduStandard><eduStandard><id>S11416DA</id><locale>International_Technology_Education_Association-ITEA_STL_Standards</locale><type>Technology</type><description>C. Various relationships exist between technology and other fields of study.</description><lowgrade>3</lowgrade><highgrade>5</highgrade></eduStandard><eduStandard><id>S11424F3</id><locale>Colorado</locale><type>Science</type><description>a. Identify and describe the variety of
energy sources
</description><lowgrade>4</lowgrade><highgrade>4</highgrade></eduStandard></eduStandards><geoCoverage>United States</geoCoverage><rights>Copyright 2012 - Integrated Teaching and Learning Program, College of Engineering, University of Colorado at Boulder</rights><rights>http://www.teachengineering.org/policy_ipp.php</rights><isPartOf>http://www.teachengineering.org/</isPartOf><created type="W3CDTF">2011-03-30</created><gradeLevel lowerbound="3" upperbound="5">4</gradeLevel><audience>Teacher</audience></tem>

