LONGITUDINAL WAVES: Longitudinal Waves, Sound , Pitch , Loudness, Tone Quality Flashcards
What is a longitudinal wave?
A wave in which the displacement of the medium is parallel to the direction of wave propagation.
True or False: Sound waves are longitudinal waves.
True
What are the two main characteristics of sound waves?
Pitch and loudness.
Fill in the blank: The distance between consecutive compressions in a longitudinal wave is called the _____ .
wavelength
What is pitch in relation to sound?
The perceived frequency of a sound, determining how high or low it sounds.
How is loudness related to the amplitude of a sound wave?
Loudness increases with the amplitude of the sound wave.
What does tone quality refer to?
The unique characteristic or color of a sound, allowing us to differentiate between different sound sources.
Which factor does NOT affect the pitch of a sound?
The loudness of the sound.
What is the unit of frequency?
Hertz (Hz)
True or False: Higher frequency results in a lower pitch.
False
What happens to sound waves when they encounter a barrier?
They can be reflected, transmitted, or absorbed.
Fill in the blank: The speed of sound is faster in _____ than in gases.
solids
What is the relationship between frequency and wavelength in sound waves?
They are inversely related; as frequency increases, wavelength decreases.
What is the typical speed of sound in air at room temperature?
Approximately 343 meters per second.
True or False: Sound can travel through a vacuum.
False
What is a compression in a longitudinal wave?
A region where particles are close together.
What is a rarefaction in a longitudinal wave?
A region where particles are spread apart.
How does temperature affect the speed of sound in air?
The speed of sound increases with an increase in temperature.
What is the term for the phenomenon when sound waves bounce off a surface?
Reflection
Fill in the blank: The human ear can typically hear frequencies from _____ to _____ Hz.
20, 20000
What determines the loudness of a sound?
The amplitude of the sound wave.
What is the main factor that affects tone quality?
The harmonic content of the sound.
True or False: Sound waves can interfere with each other.
True
What is constructive interference in sound waves?
When two sound waves meet in phase, resulting in a louder sound.
What is destructive interference in sound waves?
When two sound waves meet out of phase, resulting in a quieter sound or cancellation.
What role does the medium play in the propagation of sound waves?
Sound waves require a medium (solid, liquid, or gas) to travel through.
