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Card 6
Front
What is a period?
Back
Card 7
Front
What is frequency?
Back
Card 8
Front
Higher pitch means...
Back
Card 9
Front
Louder note means...
Back
Card 10
Front
What is the range of human hearing?
Back
Card 11
Front
What is the sound below 20 Hz called?
Back
Card 12
Front
What is the sound above 20 000 Hz called?
Back
Card 13
Front
Why can't sound travel in a vacuum?
Back
Card 14
Front
In a sound wave, the area where the particles are compressed is called...
Back
Card 15
Front
In a sound wave, the area where the particles are far apart is called...
Back
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