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41 Cards in this Set
- Front
- Back
Sonograms are possible because some ultrasound waves are _____________ when they pass from one type of material to another.
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reflected
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In a vacuum, all light travels at the same speed, which is:_____________
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3 10*8 m/s
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Soundwaves with frequencies higher than 20,000 Hz are referred to as:_____________ waves
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ultrasonic
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A transparent object that can separate white light into diffferent colors is called a _________
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prism
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A lens that bends light outward is called a _________ lens
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diverging
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The matter through which a wave travels is called the __________
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medium
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A lens that bends light inward is called a ______ lens
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converging
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Reflection of light into random directions is called:____________ reflection
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difussion
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The bending of waves as they pass from one medium to another is called
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I DO NOT KNOW THE ANSWER BECAUSE SHE MARKED IT WRONG ON YOURS AND DID NOT WRITE THE CORRECT ANSWER
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In the particle model of light, individual packets of light are called ________
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photons
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The twom onst common models of light describe it as a wave or a stream of ________
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particles
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A wave that causes the particles of the medium to vibrate paralell to the direction the wave travels is called a ____________ wave
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longitudional
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The image that you see in a mirror that results from the apparent path of light rays is called a _______________ image
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virtual
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When a sound wave strikes your eardrum, it causes forced vibrations that are transferred to the:___________________________
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hammer, anvil, and stirrup
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The structure within the cochlea containing hair cells that vibrate at different natural frequencies is the:________________
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basilar membrane
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Light waves:_________
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Are electromagnetic waves
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How loud a sound is depends on:___________________
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the amplitude of the waves
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Which type of electromagnetic wave has the highest frequency? ______________
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gamma rays
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The intensity of a sound describes:______________
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its loudness at a particular distance
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The effect in which white light seperates into different colors is called:________
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dispersion
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An orange looks orange because it:________________
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reflects orange light and obsorbs other colors
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A sonar system measures distance by determining the:______________
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time it takes for sound waves to bounce off a surface
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when light rays reflect off a rough surface, they:_______________
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scatter in many different directions
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The particle model of light explains how light can:______________
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travel through an empty space without a medium
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White light breaks up into different colors when it passes through a prism because of:______________
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differences in wave speed
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The difference between visible light and X rays is that:________________
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the frequency of X rays is greater
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The frequency of sound waves is determined by the:_____________
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source of the wave
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An ultrasound system can produce images of body structures because sound waves:_____________________
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travel at different speeds through materials of different densities
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A __________ is a good mathematical model for representing transverse waves
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sine curve
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Sound travels fastest in:___________
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Sea water
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Light waves are
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transverse
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Short-range radar works by sending a signal out from a control tower that is:_________________
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reflected off a plane back to the control tower
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The rate at which light energy flows through a given area of space is referred to as its:__________
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intensity
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The law of reflection states that when light rays reflect off a surface the angle of incidence:____________
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equals the angle of refraction
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The medium seismic waves travel through is:_________
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rocks and other materials inside Earth
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Sound waves are:________
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longitudinal waves
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Which type of electromagnetic wave has the greatest wavelegnth:___________
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radio waves
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The pitch of a sound is most clearly related to the:______________
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frequency of vibrations
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A virtual image caused by reflection of light in the atmosphere is called:_________
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a mirage
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The frequency of a sound wave determines:____________
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the pitch of the sound
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Sound waves:__________
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require a medium
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