02. Dancing mangirlstart.org/wp-content/uploads/2017/11/dancing-man.pdf · 4. To create the head,...
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Dancing Man Turn up the music to feel the vibrations! Watch your wireman dance as you discover the science behind sound waves. Are you ready to dance to the vibrations?! TEKS: SCI 3.6 B: The student knows that forces cause change and that energy exists in many forms. The student is expected to demonstrate and observe how position and motion can be changed by pushing and pulling objects to show work being done such as swings, balls, pulleys, and wagons. SCI 4.6 D: The student knows that energy exists in many forms and can be observed in cycles, patterns, and systems. The student is expected to (design an experiment to test the effect of force on an object such as a push or a pull, gravity, friction, or magnetism. SCI 6.8 B: The student knows force and motion are related to potential and kinetic energy. The student is expected to identify and describe the changes in position, direction, and speed of an object when acted upon by unbalanced forces. Materials: • ½ inch straw piece • Mini Styrofoam ball/bead • Paper cup • 1 pipe cleaner • Scissors • Stapler with staples • Wire
Transcript of 02. Dancing mangirlstart.org/wp-content/uploads/2017/11/dancing-man.pdf · 4. To create the head,...
DancingManTurnupthemusictofeelthevibrations!Watchyourwiremandanceasyoudiscoverthesciencebehindsound
waves.Areyoureadytodancetothevibrations?!TEKS:SCI3.6B:Thestudentknowsthatforcescausechangeandthatenergyexistsinmanyforms.Thestudentisexpectedtodemonstrateandobservehowpositionandmotioncanbechangedbypushingandpullingobjectstoshowworkbeingdonesuchasswings,balls,pulleys,andwagons.SCI4.6D:Thestudentknowsthatenergyexistsinmanyformsandcanbeobservedincycles,patterns,andsystems.Thestudentisexpectedto(designanexperimenttotesttheeffectofforceonanobjectsuchasapushorapull,gravity,friction,ormagnetism.SCI6.8B:Thestudentknowsforceandmotionarerelatedtopotentialandkineticenergy.Thestudentisexpectedtoidentifyanddescribethechangesinposition,direction,andspeedofanobjectwhenacteduponbyunbalancedforces.Materials:
• ½inchstrawpiece• MiniStyrofoamball/bead• Papercup• 1pipecleaner• Scissors• Staplerwithstaples• Wire
http://www.arvindguptatoys.com/toys/Rubanddance.html
HowTo:Part1:Createalineofstaplesonthepapercup
1. Placeadozenstaplesinalineonthesideofthecupfrombottomtotop,ensuringthattheyareequidistantfromoneanotherandrunperpendiculartotheverticallineonthecup.
2. Staplesothestraightedgeofthestapleisontheoutsideofthecup.
http://www.arvindguptatoys.com/toys/Rubanddance.html
Part2:Assemblethewireman
1. Usingapairofscissors,cuttwo12cmpiecesandone6cmpieceofwire.2. Slidebothofthe12cmpiecesofwirethroughthe½inchlongstrawpiece.Positiontwowiresabove
thestrawtogeneratearmsandtwopiecesbelowtoformthelegs.3. Besurethatthewirebelowthestrawforthetwolegsisslightlylongerthanthewireabovethestraw
forthetwoarms.
4. Tocreatethehead,takethe6cmpieceofwireandbenditinhalf,wedgingtheStyrofoamballintothecreaseofthewire.
5. Securetheheadandneckportionofthewiremanbyplacingbothendsofthe6cmpieceofwireintothestrawbody.
Part3:Securethewiremanontothepapercup
1. Createa5cmdiametercircleusingthe12cmlongpipecleanerbybendingandtyingtheendsofthepipecleanertogether.
2. Oncethepipecleanerringhasbeenformed,securethewiremanontothepipecleanerbylayingtheringflatonthetableandtwistingtheendsofthefeetaroundthering.
Part4:Watchthewiremandance!
1. Placethewiremanthatissecuredontothepipecleanerringontopoftheupsidedownpapercup.2. Whileholdingtheverybottomrimoftheupsidedowncupwiththewiremanontop,useafingernailor
ballpointpenrefilltorubthelineofstaplesupanddown.Whathappens?3. Observeasthewiremandancesinresponsetothevibrations.
STEMExplanation:Allthingswiggle,meaningtheymovebackandforth.Objectscanmoveinavarietyofdifferentways,soit’simportanttostudythesciencebehindthesemovements,alsocalledvibrations.Muchofwhatweobserveandexperienceinourphysicalworldisduetovibrationsandwaves.Vibrationsofanobjectoccurwhenaforceactsonanobjecttorestoreittoitsoriginalrestingpositionafterithasbeendisplaced.Inthewiremanexample,thestaplesaredisplacedfromtheiroriginalpositionwhenafingernailorpenisrubbedalongthelineofstaples.Theresultingvibrationsarewhatcausethewiremantomoveanddance.Onceitreturnstotherestingposition,thevibrationswillstopandtheobjectissaidtohavereturnedtoequilibrium,whichiswhenallforcesarebalanced.Thestapleswillremaininequilibriumuntilaforce,suchastherubbingwithafingernailorpen,actsuponthestaplestodisplaceitonceagain.CareerConnection:Acousticalengineersdealwithsoundandvibrations.Theirmainconcernsarefocusedaroundhowtheycanmanipulate,analyze,andcontrolsound.Inthefieldofacousticalengineering,professionalscanworkinfieldssuchasarchitecturalacousticsaswellasnoiseorvibrationcontrol.Theseprofessionalscanbefoundworkinginamultitudeofplacesandfields,suchasinhealthcaretodevelopultrasoundtechnology,inthemusicindustrytodevelopsoundsynthesizers,oreveninlargeconcerthallstomaximizesound.Resources: http://www.arvindguptatoys.com/toys/Rubanddance.htmlhttp://www.physicsclassroom.com/class/waves/Lesson-0/Vibrational-Motion
