Analyse the given situation and choose the correct answer:
1. A student places a small vibrating tuning fork inside a sealed container. She can see the prongs vibrating but hears almost no sound from outside. She concludes:
“Since the tuning fork is vibrating, sound must always reach the listener.”
Which observation would best challenge her conclusion?
“Since the tuning fork is vibrating, sound must always reach the listener.”
Which observation would best challenge her conclusion?
2. A scientist wants to demonstrate that sound needs a medium. She proposes two experiments:
Experiment I: Place a vibrating buzzer inside a container and gradually remove the air.
Experiment II: Place a vibrating buzzer inside a container filled with air and increase the brightness of the surrounding light.
Which experiment provides meaningful evidence for the requirement of a medium for sound propagation?
Experiment I: Place a vibrating buzzer inside a container and gradually remove the air.
Experiment II: Place a vibrating buzzer inside a container filled with air and increase the brightness of the surrounding light.
Which experiment provides meaningful evidence for the requirement of a medium for sound propagation?