sound
how is sound made
vibration that disturbers the air and reaches your ears
what is the doppler effect?
its the change in pitch of a sound relative to the observer
what are the four groups of instruments
brass, woodwind, string, percussions
what is needed to produce sound
sound needs a medium to travel through
What ocean is on the West Coast of The United States?
The Pacific ocean
can you hear sound in space, if not why?
no you can not because there is no medium for vibrations to travel through
what is the normal rage of human hearing in Hz
between 20 and 20,000
what is acoustics
the scientific study of sound and vibrations
does sound travel slower or faster in higher density
the more dense something is the slower sound will travel through it
What is the smallest continent by area?
Australia
if a tree falls in a forest and there is no one to hear it does it create sound?
yes even though there is no one to hear it it still produces a sound
what is the unit of measurement for sound
decibels
what is reverberation time(RT)
the time it takes for a sound to disappear
"sound waves can bend around corners and spread" what is this describing
Diffraction
What is the highest point on Earth?
Mount Everest
how fast is the speed of sound?
343m/s
what animal can hear in ultrasound
bats and dolphins
what group of instrument Volume is changed when the musician blows harder into the instrument
Brass and Woodwind instruments
what are the three different mediums that sound can travel through?
gas, liquid or solid
Which river flows from Minneapolis to Memphis to New Orleans?
Mississippi
If someone is 1,715m away from home plate. How many seconds will it take for the person to hear the bat hit the ball?
5 seconds
if you have a high frequency what pitch do you have?
if you have a low frequency what pitch do you have?
high pitch
low pitch
why can reverberation be good and bad?
Reverberation can be good because with too little, sounds may be distant and thin.
too much can be annoying
"the ability of a material to bounce back after being disturbed." describes what
Elasticity
What is the smallest country in the world?
Vatican City