Sound through an Oscilloscope

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School blocks YouTube?

B. Period (T) – time for an entire wave cycle to pass a given point in a medium

- determined by source of vibration not medium

T = Total Time/# of waves

Ex) Use the controls to give this wave an amplitude of 5 and a period of 10

Ex) It takes 20 seconds for 5 waves to pass by a point. What is the period?

The period is 4 seconds

 T (sec) (Period) = 1 f

 Ex) The frequency of a light wave is 5.0 x 1014 hertz. What is the period of the wave?

T = 1/f

= 1/(5.0 x 1014 hertz)

a) 2.0 x 10-15 s

Which has the largest period?

Jan 2004

B
(will take the
longest  to pass by)

C. Amplitude – maximum change in position of a particle from its rest position during a single vibration

St. Mary's Physics Online

- determined by source of vibration, not medium

Ex) Compare waves A & B

Same Frequency, Period
Different Amplitude

1. Amplitude of a wave shows the amount of energy in the wave

a. Amplitude is a measure of loudness for sound and brightness for color -

Set your volume low before playing this video

Sound Waves/Oscilloscopes
HyperPhysics

| Onsite |

Amplitude?

Made using a spreadsheet created by Dan Hosey - Pittsford Sutherland HS

3.0 meters

Review

Which interval is closest to one wavelength?

Longitudinal or Transverse?

Enrichment

How the Ear Works

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How Sound Works

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