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Unit 2: Thinking Like a Scientist Theme 4: What is Sound? http://hacknmod.com/wp-content/uploads/2009/04/sound_wave.jpg
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melody- the main tune of a song The melody of a song is often a catchy one that a person easily remembers. http://www.betterguitar.com/instruction/music_notation/lesson_5/when_the_saints.gif
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harmony- when different tunes in a song go together well The harmony of songs is written by a musical artist. http://img.youtube.com/vi/K8345fyoGLQ/0.jpg
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broadcast- when a television or radio program is sent over the airwaves The television will broadcast the sports game in HD-TV. http://www.broadcast-integration.com/image/users/115145/ftp/my_files/NBC_Nightly_News_Broadcast.jpg
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improvise- to make it up as you go along The musicians used buckets to improvise when they did not have drums. http://farm4.static.flickr.com/3153/2904597557_e467941663.jpg
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experiment– the act of trying something to see if it works Scientists try different experiments to find new discoveries. http://www.intalek.com/Index/Projects/SparkGapExp/SparkGapExperiment.jpg
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length– how long something is The length of the box is about 4 feet long. http://upload.wikimedia.org/wikipedia/commons/thumb/d/dc/Length.svg/800px-Length.svg.png
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concentrate– to pay close attention to something To stack playing cards, one would have to concentrate carefully. http://the-ideal-school.org/pictures/Student_Life/concentration.jpg
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instrument- a device for producing sounds In music, there are many different instruments used to produce sounds. http://projects.cbe.ab.ca/AlexFerg/showcase07-08/rehakclassblog1/ist2_2113889_vector_music_instruments.gif
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vibration- a rapid back-and-forth movement Sound waves are produced by the vibration of an object, such as a violin string. http://media-2.web.britannica.com/eb-media/89/26989-004-3708153A.gif
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pitch- how high or low a sound is The high pitch of a baby’s cry hurts my ears. http://kempefoundation.files.wordpress.com/2009/07/crying-baby.jpg
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