Study Science: Chap. 11 Flash Cards

 
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Science: Chap. 11

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when an ambulance leaves, what happens to:
the frequency?
the wavelength?
the wave speed?
the pitch?
frequency goes down
wavelength goes up
wavespeed stays the same
pitch goes down
when an amubulance approaches, what happens to:
the frequency?
the wavelength?
the wave speed?
the pitch?
frequency goes up
wavelength goes down
speed stays the same
pitch goes up
what is the equation for wavelength?
x = f / v

x-wavelength
f-frequency
v-wavespeed
what is the equation for wave speed?
v = f * x

v-wavespeed
f-frequency
x-wavelength
what is the equation for frequency?
f = 1 / T

f-frequency
T-period
a wave form caused by interference that appears not to move along the medium and that show some regions of no vibration (nodes) and other regions of maximum vibration (antinodes)
standing wave
any interference in which waves combine so that the resulting wave is smaller than largest of the original waves
destructive interference
any interference in which waves combine so that the resulting wave is bigger than the original waves
constructive interference
the combination of two or more waves that exist in the same place at the same time
interference
the bending of waves as they pass from one medium to another

ex: spoon in glass of water
refraction
the bending of a wave as it passes an edge or an opening

ex: sound waves bending around a closed door
diffraction
the bouncing back of a wave as it meets a surface or boundary

ex: rope attached to a post
reflection
an observed change in the frequency of a wave when the source or observer is moving
Doppler effect
the speed at which a wave passes through a medium
wavespeed
the number of vibrations that occur in a 1 s time interval
frequency
the time required for one full wavelength to pass a certain point
period
the distance between any two successive identical parts of a wave
wavelength
the greatest distance that particles in a medium move from their normal position when a wave passes
amplitude
the lowest point of a transverse wave
trough
the highest point of a transverse wave
crest
a wave that causes the particles of the medium to vibrate parallel to the direction the wave travels
longitudinal wave
a wave that causes the particles of the medium to vibrate perpendicularly to the direction the wave travels
transverse wave
a wave caused by a disturbance in electric and magnetic fields and that does not require a medium; also called a light wave
electromagnetic wave
a wave that requires a medium through which to travel
mechanical wave
the matter through which a wave travels
medium
a disturbance that transmits energy through matter or space
wave
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