Two students carried out an experiment to determine the speed of sound. This is the method used,
1.
Student A stands 100 m away from Student B.
11
2. Student A bangs two blocks of wood together making a loud sound.
3. Student B starts a stopclock when he sees the blocks of wood bang together.
4.
Student B stops the stopclock when he hears the sound and records the time.
5.
The students repeat steps 2-4 several times.
(1)
The students calculated the speed of sound from their results.
int
(e) Suggest the most likely source of error in the experiment.
timing and
the timing of
the person.
(1)
(0
The speed of sound calculated was lower than the true speed of sound in air.
Hz
Suggest one improvement to the students' method that would give a more accurate value
for the speed of sound.
(2)
(1)