Show:
Characteristics of Waves
The Nature of Sound
Effects of Sound
Music and More
More on Sounds
100
This is a rhythmic disturbance that carries energy through matter or space.
What is a wave?
100
This is another name for a compressional wave, such as sound.
What is a longitudinal wave?
100
Sound is emitted in all directions, and is called this.
What is a shock wave?
100
This is sound that has no set pattern and no definite pitch.
What is noise?
100
This is the eight note scale that western music is based on.
What is the octave?
200
This form of wave moves perpendicular to the medium through which it travels.
What is a transverse wave?
200
These are the two basic parts of a compressional wave.
What are the compressions and rarefactions?
200
Hearing sound from a source that is stationary and not varying in its frequency, will emit a noise that has a constant ___________.
What is pitch?
200
This is sound with a definite pattern and pitch.
What is music?
200
This is the ability of two or more waves to combine and form a new wave.
What is interference?
300
This characteristic of a wave determines its loudness, or the amount of energy it carries.
What is amplitude?
300
This is the name for sound wave frequencies above 20,000 Hz.
What are ultrasonic waves?
300
This is the perceived change in pitch due to the relative motion of a sound source.
What is The Doppler Effect?
300
Most objects have this frequency, which is determined by the characteristics of the object, and it's size.
What is natural frequency?
300
This is interference where the opposite parts of a wave combine, dropping the amplitude as they cancel out.
What is destructive interference?
400
If the speed of a wave is constant, as frequency increases, what property of a wave must decrease?
What is wavelength?
400
This is the name for sound wave frequencies below 20 Hz.
What is infrasonic sound?
400
This is the build-up of wave energy caused by an object traveling at the same speed as a wave.
What is a wave wall, or barrier?
400
This describes the differences among sounds of the same pitch and loudness.
What is sound quality?
400
This is the continued reflection of sound.
What is reverberation?
500
This equation describes wave velocity.
What is velocity = (frequency) x (wavelength)
500
In sound, the frequency is often described as the _______ of a noise.
What is the pitch?
500
This is the reason why a sonic boom, caused by an object moving faster than the speed of sound, will cause such a devastating, but brief, noise.
What is that the object creates sound waves that run into one another, collecting as a single super wave that moves outward.
500
These are frequencies that are multiples of an object's fundamental frequency.
What are overtones?
500
This is the field of science dedicated to the study of sound.
What is Acoustics?