We have two ears and one tongue so that we would listen more and talk less.
100
The measurement (constant) for speed of light.
What is 3 x 10^8 m/s?
100
They are the 3 types of mechanical waves.
What are longitudinal, transverse, and surface waves?
100
The speed of a sonar signal traveling 50 m in water, to the bottom and back, in 0.2 seconds.
What is 250 m/s?
100
Sound is created by this back and forth motion.
What is vibration?
100
This is what vibrates inside your ear when sound reaches it.
What is the eardrum?
200
The wavelengths from smallest to largest of the seven types of EM waves.
What is gamma, x-ray, ultraviolet, visible, infrared, microwave, radio waves?
200
The number of crests or toughs of a wave that pass by over a certain amount of time.
What is frequency?
200
The frequency received by an FM radio station that carries a wavelength of 275 m on your radio dial.
What is 1.09 x 10^6?
200
This word describes what we call a sound that has bounced off of a hard surface, and travels back to us.
What is echo?
200
These cause the eardrum to vibrate.
What are sound waves?
300
The EM waves with the highest energy.
What are gamma waves?
300
The matter through which a wave travels.
What is medium?
300
The wavelength of yellow light emitted from a sodium lamp, if the frequency is 5.10 x 10^14 Hz .
What is 5.88 x 10^-7 m?
300
How high or low a sound is.
What is pitch?
300
A soft, fluffy material that may be placed in your ear to absorb the sound waves when you have an earache.
What is cotton? or What is a cotton ball?
400
Waves having some electrical properties and some magnetic properties.
What are electromagnetic waves?
400
This is created by the vibrations of your vocal cords.
What are sound waves?
400
The depth of the ocean when a boat traveling in saltwater sends out a signal going 1500 m/s to the sea floor, and the reflected signal comes back 0.25 seconds later.
What is 375 m?
400
Sound travels faster through this type of matter.
What are solids?
400
Sticky substance that may prevent sound from reaching your eardrum.
What is earwax?
500
In a vacuum, all electromagnetic waves have the same of this.
What is speed?
500
Almost all waves are mechanical waves, with the exception of ___________.
What are electromagnetic waves?
500
The speed of a wave when its frequency is 60 Hz and it is traveling through steep with a wavelength of 90 m.
What is 5,400 m/s?
500
This word is used to describe the amount of energy a sound wave carries.
What is amplitude?
500
Fluid filled chamber in the inner ear that is shaped like a shell.