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Level 25

Waves in One Dimension


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Wave
A disturbance in matter that carries energy from one place to another is called a _______.
medium
A substance through which signals can travel (e.g. air for sound waves).
mechanical waves
A wave that needs a medium to travel through.
transverse wave
A wave that vibrates at right angles to the line of rest or equilbrium position.
longitudinal wave
A wave that vibrates parallel to the line of rest or equilibrium position.
torsional wave
A wave that twists around its line of rest or equilbrium position.
pulse
The transmission of a single wave.
periodic wave
A wave that has pulses that occur at regular intervals.
cycle
a series of changes produced in sequence that recur periodically.
Frequency
#cycles/second
HZ
frequency is measured in_______
period
The energy level or horizontal row of elements in the periodic table
The Universal Wave Equation
An equation that says the velocity of a wave is equal to the product of its frequency and wavelength.
amplitude
The maximum displacement from the Equilibrium Position
Wavelength
distance between two consecutive crests which are in phase with one another
compression
A force that pushes on or squeezes a material.
rarefaction
a part in a longitudinal wave where the particles are spread apart
reflection
a wave strikes a boundary and bounces back
partial reflection
The reflection that occurs when a wave moves from one medium to another.
wave interference
Two or more waves acting simultaneously on the same particles of a medium, resulting in a new displacement.
Constructive interference
Bright bands are
Destructive interference
Dark bands are
standing wave
The resultant of two wave trains of the same wavelength, frequency, and amplitude travelling in opposite directions through the same medium.
node
A point in a standing wave at which negative interference results in a constant amplitude of zero.
antinode or loop
Areas of double crests or double troughs that occur in a standing wave.
resonant frequency
The frequency at which a standing wave can exist.
fundamental frequency
lowest frequency which produces a standing wave
harmonics
Another term for the resonant frequencies of standing waves.
first harmonic
Another term for the fundamental frequency.
overtones
The natural frequencies above the fundamental frequency.