1. Measuring the Speed of Sound
COPY
Measuring the Speed of Sound
22/04/2017
Distance (d)
Microphone 2
Microphone 1
timer
start
stop
Make a sound. When the sound reaches microphone 1, the timer starts.
When the sound reaches microphone 2 the timer stops giving a time, t, to cover distance, d.
The speed of sound can then be calculated from speed = d / t

2. Results
distance (d) =
time (t1) =
time (t2) =
time (t3) =
Calculations
av. time (t) =
d =
t =
s =

3. Conclusion
The speed of sound is ______________ m/s.

4. Open up your notes at page 1, note ,The speed of sound and light, and collect a highlighter or coloured pen.
timer
metre stick
noise
starts
stops
mic. 2
mic. 2
340 8

5. Open up your jotter. Write the heading
sound
time
lightning
faster
Open up your jotter. Write the heading
Examples that show that light travels faster than sound. 1. 2.

6. or km s
or h
ms-1
or kmh-1
t = 0.6 s
v = 340 ms-1
d = ?
d = v x t
= x 0.6
= m
Problems on page 2.