Chapter 20 Major Quiz Flashcards
what affects frequency?
rate of propogation (the rate at which you create a wave vibration)
what affects wavelength?
frequency and wave speed
what affects period?
frequency
what affects wave speed?
properties of the medium
what affects amplitude?
the amount of energy applied to the wave
how many cycles are created in a certain time period
frequency (Hz)
the time it takes to complete one cycle; has to end in the same place it starts
Period (T)
when some outside force (air resistance, etc.) takes energy outside of the system and makes the simple harmonic motion less extreme; reduces the amplitude of a wave
dampening
a repetitive motion caused by a restoring force that will keep moving forever in an ideal world
simple harmonic motion
a wave that requires a medium, or some physical object, to travel through (ex: sound)
mechanical waves
waves that can travel through space (ex: light, microwaves, x-Rays, gamma rays, radio waves)
electromagnetic waves
a wave in which the medium travels perpendicular to the path of energy
transverse wave
a wave in which the medium travels parallel to the path of energy
longitudinal
a means of transporting energy from one place to another
wave
the distance between two crests or two troughs (transverse) or two compressions or two rarefactions (longitudinal); one wave cycle
wavelength
distance from crest to midline or midline to trough
amplitude
graphical representation of wave-like motion
sine wave
what happens when a wave pulse hits a boundary?
it reflects back on the opposite side of the midpoint
what happens when a wave pulse hits a loose end?
it reflects back on the same side of the midpoint
when two identical parts of a wave are in the same place at the same time
constructive interference
a type of interference that occurs at any location along the medium where the two interfering waves have a displacement in the opposite direction (a crest and a trough meet)
Destructive interference
what affects the period of a pendulum?
Length of the pendulum
what affects the period of a mass on a spring?
mass and spring constant
the lowest frequency that creates a standing wave within a certain boundary or length
fundamental frequency
appears to stand still
standing wave
appears to travel from one place to the other
traveling wave
when you have constructive interference and destructive interference in the same place at the same time repetitively; the crest of each wave cancels with the trough of the previous one
what causes standing waves?
point of minimum displacement or no displacement on a standing wave
node
two points of maximum displacement on a standing wave
antinode
