chapter 14 vocab Flashcards
a wave that travels only through water
mechanical wave
a wave that can travel through empty space or through matter
electromagnetic wave
a wave which the disturbance is perpendicular to the direction the wave travels
transverse wave
a wave that makes the particles of a medium move back and forth parallel to the direction the wave travels
longitudinal wave
the number of wavelengths that pass a point each second
frequency
the maximum distance a wave varies from its rest position
amplitude
the change in direction of a wave as it changes speed moving from one medium into another
refraction
a low-frequency, low-energy electromagnetic wave that has a wavelength longer than about 30 cm
radio wave
an electromagnetic wave with a wavelength shorter than a microwave but longer than light
infrared wave
an electromagnetic wave with a slightly shorter wavelength and higher frequency than light
ultraviolet wave
a material that allows almost all of the light striking it to pass through which objects can be seen clearly
transparent
a material that allows most of the light that strikes it to pass through, and through which objects can be seen clearly
translucent
a material in which light does not pass through
opaque
the region of a longitudinal wave where the particles where the particles of the medium are closest together
compression
the region of a longitudinal wave where the particles are furthest apart
rarefaction
the perception of how high or low a sound seems
pitch
the unit used to measure sound intensity or loudness
decibel(dB)
