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33 Cards in this Set
- Front
- Back
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Frequency |
a rate of something that repeats over and over |
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Pulse |
is a repeating event which is one of the crucial elements of all waves; a short burst that travels as a wave. |
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wave |
a back and forth pattern of motion that transfers energy |
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reflection |
the bouncing back of waves off an object |
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crest |
high point of a wave |
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node |
a point where a wave crosses it's resting line |
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Trough |
low point of a wave |
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What defines a wave? |
The back and forth motion transferring energy. |
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What is a wave? |
Something that transfers kinetic energy back and forth. All waves do this. They also have crests and troughs. |
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How do transverse waves move? |
They move up and down. |
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How do compressed waves move? |
They move back and forth. |
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What is energy of motion? |
Kinetic energy |
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Amplitude is found by |
Measuring the distance from the resting line to a crest |
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The distance from one node to the next will measure |
Half of the wave length |
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Amplitude |
The height of the peaks above the resting line in a wave. |
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Transverse wave |
A wave in which the movement of the waves medium is perpendicular to the movement of the wave traveling through the medium |
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Velocity |
Speed plus a direction. |
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Wave length |
The length of one wave; can be measured as the distance from the center of one peak (crest) to the center of the next peak (crest). |
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Angle of incidence |
The angle of an incoming beam |
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Angle of reflection |
The angle of a beam reflected off a surface |
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Color |
How different wavelengths of light are percieved |
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Electromagnetic spectrum |
The range of all different electromagnetic wavelengths |
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Electromagnetic wave |
A wave of electricity and magnetism that can travel through a medium or empty space |
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Filter |
A transparent material that can absorb certain colors |
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Incident beam |
An incoming beam |
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Interface |
The place where two different media meet |
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Laser |
A tool that produces a very narrow focused beam of coherent light |
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Normal line |
A line that extends at a right angle 90 degrees from a flat surface |
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Ray |
A straight line that light waves travel in. |
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Reflected beam |
A beam reflected off a surface |
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Refraction |
The changing of a wave speed and direction as it travels into a medium |
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Spectrascope |
A tool that can separate light into it's different wavelengths of electromagnetic radiation |
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Total internal reflection |
When a wave bends so much at the interface between media that it reflects back into the original medium instead of refracting out into the new medium |
