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Sound and Light Waves
Terms in this set (39)
Sound is a series of _________ waves that moves through a _________.
These sound waves are created by the ___________ of some object.
parallel; compression; rarefaction
Sound particles travel __________ to the direction in which the wave is moving (________ when close together, and _________ when apart).
Sound travels through a _________ (not a ______).
reflection, refraction, interference, and diffraction
Sound exhibits all wave properties...
The ______ of a sound wave is the same as its loudness.
A common measurement of loudness is the _____.
The speed or velocity of sound in air is approximately ________ at room temperature.
Does sound move faster on a hot day or on a cold day?
A _________ is the distance between two successive in phase points (how long one wave is).
___________ is the number of waves passing through a point in one second. It is also called the ________ of a sound.
The _______ the frequency, the higher the pitch.
The _________ is the perceived change in frequency of sound emitted by a source moving relative to the observer. It is widely used to measure velocities, ultrasound, and radar.
The Doppler Effect was first noted by ___________.
____________ occurs when a sound loop exits between an audio input (ex. a microphone) and an audio output (ex. a speaker).
________ is an electromagnetic wave.
Light travels through a _________.
The speed of light in a vacuum is...
700nm to 400nm
Visible light ranges from _____ nm (red light) to _______ nm (violet light)
luminous flux (and its unit)
measures the rate at which light is emitted from a source
illumination (and its unit)
refers to the amount of light falling on a surface
intensity (and its unit)
measures how bright or intense the light is striking a surface
transmits light readily
transmits light with distortion
doesn't transmit light (it is absorbed or reflected)
band of colors produced when light is broken into its constituent wavelengths
scattering of light. wavelengths of light are bent (refracted) to carrying degrees. violet light bends the least
the color of an opaque object is due to the color that it reflects. a black object absorbs all color and a white object reflects all color
primary colors of light
red, green, and blue (combine to form white light)
secondary colors of light
produced by combining two primary colors yellow, cyan, and magenta
produced by combining a primary color and a secondary color to form white light
Radio waves have the _______ waves in the electromagnetic spectrum.
________ are good for transmitting information from one place to another, weather, and heating food.
near infrared; far infrared
"__________" light is closest in wavelength to visible light and "__________" is closer to the microwave region of the electromagnetic spectrum.
________ rays are shorter than visible light. Invisible to human eye. Penetrate Earth's atmosphere.
________ rays act more like particles. collect photons. not able to penetrate in space
_________ rays are the shortest wavelengths. Most energy. kill living cells.
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