the ear
Sound, Waves, and Resonance
Need for Speed / Interference
need for speed/ interference 2
Light interactions
100
What is the part of the ear in the diagram that the number 9 is pointing toward?
semicircular canals
100
What do we call waves that cause a medium to vibrate at right angles to the direction in which the wave travels?
longitudinal
100
What would be the safest structure for you to enter during a thunderstorm?
a home
100
The shock waves during a supersonic boom are formed by _________.
air that can't get out of the way fast enough
100
A disturbance that moves through space and time is called a ________.
wave
200
What is number 3 pointing to?
Tympanic membrane
200
The range of pitches that humans can hear is limited due to the small size of our ______.
cochlea
200
Name two things that lightning travels through in a home.
wires and plumbing
200
What kind of interference do you get if you have two speakers playing music in a room where the crests meet?
constructive
200
What kind of wave is light?
transverse
300
The cochlea is like a rolled-up triangle that allows us to hear what part of sound?
pitch
300
When measuring the amplitude of a wavelength, at what point of the chart do you start measuring?
midpoint
300
What is the metric unit for measuring the frequency of sound waves?
hertz
300
The formula for speed is Total Distance / Total Time. Based on the data table below, what is the average speed after two minutes? Please show all calculations.
Time (min.) Distance (m)
0 0
1 100
2 125
3 180
75 meters per min
300
frequency
400
What is number 7 pointing to
the cochlea
400
What phenomenon is illustrated when sound waves cause a wine glass to shatter?
resonance
400
When two crests from two wave sources meet, what is it called?
super crest
400
The loud explosive noise a plane makes when we hear the shock wave that comes from it when it is traveling at or above the speed of sound is called ______________.
a sonic boom
400
hertz
500
What is number 8 pointing to?
Auditory Nerve
500
What do we call the measurement of the loudness of sound?
amplitude
500
Plucking a guitar string and watching the string vibrate with the wave appearing not to move down the string is a good example of __________.
a standing wave
500
The beginning point or end point of a sound wave is called _____________.
node
500
What do we call the change in direction of a light wave as the wave moves around an obstacle or passes through a narrow opening?
diffraction