waves, sound, light, color review
color subtraction
absorbing colors of light to produce new colors
transparent
allows most light to pass through, producing clear images
translucent
allows some light to pass through, producing blurry images
elephants
animal that hears infrasonic
dolphins
animal that hears ultrasonic
opaque
blocks most light, no image is produced
color addition
combining colors of light to produce new colors
amplitude
distance from the nodal line to the crest
amplitude
distance from the nodal line to the trough
cyan, magenta, yellow
list 3 secondary colors
electromagnetic
list another name for a transverse wave
insolation, egg cartons, carpet, curtains, egg crate-cut-foam
list at least 3 ways echoes can be prevented
green, blue, red
list the 3 primary colors
sound, longitudinal
list two other names from a compressional wave
trough
lowest part of the wave
vacuum
medium sound cannot travel through
heats up food
microwaves can..
transverse
the EM spectrum is made up of these waves
diffraction
the bending of a wave as it passes an edge or opening
Doppler effect
the change in pitch heard when the listener or the source of sound is moving
wavelength
the distance from one point of a wave to the same point in the next wave
wavelength
the distance from one trough to another trough
solid
the fastest medium a wave travels through
pitch
the highness or lowness of a sound
intensity
the loudness of a sound
frequency
the number of waves that pass a certain point per second
visible spectrum
the only part of the EM spectrum humans can see
longitudinal
the particles of the medium vibrate side to side in the direction of the wave movement
transverse
the particles of the medium vibrate up and down to the direction of the wave movement
echo
the reflected sound of a wave
liquid
the slowest medium a wave travels through
resonance
the tendency of an object to vibrate at the same frequency as another object
echolocation
the use of echoes to measure distance
human hearing range
20 to 20,000 Hz
visible light
ROY G BIV
gamma rays
Which part of the electromagnetic spectrum has the greatest amount of energy
Gamma rays
Which part of the electromagnetic spectrum has the shortest wavelength
radio waves
Which part of the electromagnetic spectrum has the smallest frequency
wave
a disturbance that travels through space or matter in a regular pattern
polarization
a process that produces light that travels in only one plane
velocity=frequency x wavelength
formula for finding velocity
ultrasonic sounds
frequencies above 20,000 Hz
infrasonic sounds
frequencies below 20 Hz
treat cancer
gamma rays can..
keeps food warm in restaurants
infrared rays can..
constructive interference
occurs when waves align in sync; creates a larger wave
destructive interference
occurs when waves are out of sync
compressional
particles are displaced back and forth
crest
peak of the wave
compression
point in a sound wave where the lines are close together
rarefaction
point in a sound wave where the lines are far apart
transmit t.v./ radio
radio waves can..
nodal line
resting line on a wave
long, low, red, radio
rhyme for left side of EM spectrum
short, high, gamma, vi(olet)
rhyme for right side of EM spectrum
pitch
this is determined by the frequency of a wave and is measured in Hz
cause sunburn
ultraviolet can..
Hertz
unit of measure for frequency and pitch
allow you to see
visible light can..
red
which color of light has the least amount of energy