Names: Block: .

Speaker Lab Investigation

Choose an investigating question: (Check ONE)

How could you improve the sound quality of a paper plate speaker? What determines either how loud or at what pitch the sound coming from the

speaker is?

Variable you are changing: (Check ONE)

# of coil turns: ____________ turns

Plate design: __________________________

Spring/suspension system: __________________________________________

Observations/Analysis:

1. How did your speaker sound compare to the control speaker (my speaker)?

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2. What caused this change in quality of speaker?

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Conclusion:

Answer your investigation question: _____________________________________

__________________________________________________________________

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Reflecting:

Which of the magnetic fields must be changing so that vibration occurs?

What part of the speaker must be vibrating to cause air molecules to vibrate?