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====== Q8.1 Sound - How is sound transmitted by a speaker: ======

[[http://animagraffs.com/loudspeaker/|{{ :sound:speaker-graphic.jpg |How speakers work}}]]

=== Video 1. How speakers work ===

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++++ Q8.1 CLICK HERE TO SEE / HIDE STUDENT FLIP RESOURCES:|
CONCEPTS: Sound, vibration, sound waves, pitch,& volume.

Which of the following theories best describes the way that sound is sent out from a loudspeaker to effect a human eardrum? 

B) - Air particles, vibrate when they come into contact with the loudspeaker. These air particles move out carrying the sound from the loudspeaker to the ear.

Source: Q6,7 & 8: http://baldufa.upc.edu/recerca/articles/a42/eaeeie_2009_misconceptions_sound_waves.pdf

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++++ Q8.1 CLICK HERE FOR A SCIENTIFIC EXPLANATION:|
Cross- tabulation of results of this and the previous two questions have shown that students do not have a consistent model of how sound travels. They appear to have a number of alternative explanations that depend on circumstance.

Source: Q6,7 & 8: http://baldufa.upc.edu/recerca/articles/a42/eaeeie_2009_misconceptions_sound_waves.pdf

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