Sound Flashcards
What’s a frequency?
It’s the pitch so if the sound goes higher or lower.
How does an object produce a sound?
It produces a sound by vibrating.
What’s the amplitude?
It’s how loud the sound is so if it’s quiet or loud.
A loud note has a….?
high amplitude.
A soft note has a…?
low amplitude.
A high pitch sound has a…?
high frequency.
A low pitch has a…?
low frequency.
What happens to the wavelength if you have a high frequency?
The higher the frequency, the shorter the wave length.
Can sound travel through a vacuum?
No, sound needs a material medium.
How fast does sound travel in different material mediums?
Sound travels faster through solids because the particles are closer together than in a liquid or a gas, so the vibrations are more easily passed from particle to particle.
Why can you sometimes see things before you hear them?
Because light travels faster than sound.
How fast does sound travel?
Around 330m/s
What do sound waves do?
Travel through the air.
What does the ear flap do?
It funnels the sound waves into the ear canal.
What does the ear drum do when sound reaches it?
It starts to vibrate.
