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There are 2 types of pitch, definite and indefinite.

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Lt 1: Draw conclusions on how sound waves travel/behave in different mediums.

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Lt 1: Draw conclusions on how sound waves travel/behave in different mediums.

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When you listen to a sound and you hear different tones. The number of vibration per second. Higher sounds have higher frequencies and lower sounds have lower frequencies.

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Sound occurs when air molecules are forced together, after being forced together they then expand farther apart. Creating a wave-like motion of air.

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Lt 1: What effect do vacuums have on waves?

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Lt 1: What effect do vacuums have on waves?

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Physics - Waves -  Introduction - Definitions, Logintudinal and Transverse.

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http://www.stmary.ws/HighSchool/Physics/home/notes/waves/CharacteristicsPeriodicWaves.htm This movie is part of the collection: Prelinger Archives Production Company: ERPI Classroom Films, Inc. Distributed by Encyclopedia Britannica Audio/Visual: sound, B&W Creative Commons license: Public Domain

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Blaze and the Monster Machines | Croaking Cave Frog | Nick Jr. UK

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