Podcast
Questions and Answers
What is the reason behind the difference in voices of men, women, and children?
What is the reason behind the difference in voices of men, women, and children?
- Volume of air in the lungs
- Varied length of vocal cords (correct)
- Different pitch of vocal cords
- Type of sound produced
Why does the sound become fainter when you suck air from the tumbler?
Why does the sound become fainter when you suck air from the tumbler?
- Increased air pressure inside the tumbler
- Sound waves reflected back
- Decreased air pressure inside the tumbler (correct)
- Vibration of the tumbler
What happens to the sound when you remove the tumbler from your mouth?
What happens to the sound when you remove the tumbler from your mouth?
- Sound changes pitch
- Sound disappears
- Sound becomes softer
- Sound becomes loud again (correct)
Why can't you hear any sound if all the air is sucked out of the tumbler?
Why can't you hear any sound if all the air is sucked out of the tumbler?
How does the length of vocal cords differ between men and women?
How does the length of vocal cords differ between men and women?
What is the significance of a medium for sound propagation?
What is the significance of a medium for sound propagation?
What is the thin stretched membrane at the end of the canal called?
What is the thin stretched membrane at the end of the canal called?
Which of the following can sound travel through?
Which of the following can sound travel through?
What does the eardrum do when sound vibrations reach it?
What does the eardrum do when sound vibrations reach it?
In what medium can sound be transmitted?
In what medium can sound be transmitted?
How do vibrating objects produce sound?
How do vibrating objects produce sound?
Where do the vibrations from the eardrum travel to before reaching the brain?
Where do the vibrations from the eardrum travel to before reaching the brain?
What happens when air has been completely removed from a vessel?
What happens when air has been completely removed from a vessel?
Can sound travel through a vacuum?
Can sound travel through a vacuum?
How do whales and dolphins communicate under water?
How do whales and dolphins communicate under water?
What medium can sound travel through based on the provided activities?
What medium can sound travel through based on the provided activities?
What shape is the outer part of the ear compared to?
What shape is the outer part of the ear compared to?
Why can't sound travel through a vacuum?
Why can't sound travel through a vacuum?
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