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33 Cards in this Set
- Front
- Back
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waves
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a disturbance or a variation that travels through a medium
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wave medium
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the substance through which a wave travels
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electromagnetic waves
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an electric field and a magnetic field oscillating
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wave pulse
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a single rise or depression in a series of waves
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crest
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the highest point in a wave
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trough
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the lowest point in a wave
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wave train
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a series of waves
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frequency
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the number of cromplete waves that pass a given point in a certain unit of time
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cycles
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complete waves
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wavelength
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the distance from the crest on one wave to the cres of the next one
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infrared waves
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waves that are found immediately below red on the scale of frequencies
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microwaves
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radio waves with the shortest wavelengthes
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ultraviolet
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found immediately above violet in the visible spectrum
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fluorescent
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a substance that converts ultraviolet light into visible light
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x-rays
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high-frequency waves found just above ultraviolet waves
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gamma rays
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has the highest frequency of the spectrum; extremely energetic rays released by the sun
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windows
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bands of frequencies; radio windows and optical windows
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near ultraviolet and near infrared
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the last two bands of the optical window so called becaus they are found near visible light in the electromagnetic spectrum
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ionsphere
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the upper atmosphere which contains a high concentration of positive ions
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ozone layer
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a region where much oxygen has been changed into ozone
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mesophere
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home of the ionosphere
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stratosphere
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home of the ozone layer
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nitrogen and oxygen
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the to most abundant gasses in the atmosphere, compose 99% of the atmosphere
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carbon dioxide, ozone, and water vapor
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the most important of the gasses which compose 1% of the atmosphere
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fluid
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a substance that can flow one place to another
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diffusion
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the random spreading of one fluid through another
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Boyle's law
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if the temperature of a gas remains constant, its volume and pressure are inversely related
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Charles's law
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if the pressure of a gas remains constant, its volume and temperature are directly related
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expands
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increases in volume
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contracts
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decreases in volume
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cooler air...
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has the tendency to sink
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warmer air..
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has a tendency to rise
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combined gas law
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if the volume of a gas is held constant, its pressure and temperature are directly related
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