Show:
Sound Waves
Measuring Sound
Sound Moves
Musical Instruments
This and That
100
In order for sound to occur, this must be present.
What is matter?
100
This term refers to the number of waves that occur during a second.
What is frequency?
100
What happens when a sound wave hits a soft surface
What is absorption?
100
In this family of instruments, sound is made by striking one solid object with another (drums, cymbals, xylophone).
What is percussion?
100
Two animals that use echolocation
What are bats and whales [and/or porpoises]?
200
In a sound wave, this is an area of tightly packed molecules.
What is compression?
200
The instrument that measures the number of sound waves per second.
What is an oscilloscope?
200
The term used to describe when a sound wave hits a hard surface and bounces back
What is reflection?
200
In the human voice, these two straight elastic-like strings are responsible for making sound
What are vocal chords?
200
The higher the frequency, the higher the _________
What is pitch?
300
In a sound wave, this is an area of loosely packed molecules.
What is rarefaction?
300
The distance between two sound waves from the same point on each wave
What is a wavelength?
300
If you were to shout down from the top of the Grand Canyon, you would hear the sound of your voice come back to you.
What is an echo?
300
In this family of instruments, sound is made by blowing into or across a mouthpiece, often with a wooden reed (clarinet, oboe, flute, piccolo)
What is woodwind?
300
Sound travels the fastest through which type of matter?
What is solid?
400
This is the rapid back-and-forth motion of molecules.
What is vibration?
400
The unit by which loudness is measured
What is decibel?
400
The state of matter in which sound is transmitted slowest
What is a gas?
400
In this family of instruments, the instruments are plugged in to a power source (rock guitar, keyboard, synthesizer)
What is electric?
400
What ships and submarines use to detect and locate underwater objects
What is SONAR?
500
This is the height of a sound wave. It determines the volume of a sound.
What is amplitude?
500
The unit by which the highs and lows of sound are measured
What is hertz?
500
A place where no sound can occur
What is space [or a vacuum]?
500
In this family of instruments sound is made by strumming or plucking a wire (violin, viola, cello, bass)
What is strings?
500
The apparent change in the length of a sound wave caused by the motion of the source of sound, heard as a change of pitch [think ambulance]
What is the Doppler effect?