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3rd Nine week exam
Final Exam
17
Biology
9th Grade
05/13/2015

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Term
Medium
Definition
The matter that a wave travels through is called
Term
waves
Definition
Repeating disturbance that transfers energy
Term
period
Definition
amount of time for one wave to pass a given point.
Term
Hertz (hz)
Definition
the unit that expresses frequncey is
Term
Frequncey
Definition
the number of wavelengths that passes a given point per second
Term
Wavelength
Definition
The distance from a point on a wave to corresponding point on the next wave
Term
Rarefraction
Definition
Region in a coil in which the coils are spread
Term
Troughs
Definition
low points of a transverse wave are
Term
Crest
Definition
High points on a transverse wave are
Term
Soundwaves
Definition
aN EXAMPLE of compressional
Term
longituitial
Definition
Compressional wave are also
Term
Water
Definition
An example of a transverse wave
Term
Reflection
Definition
Ocurrs when a wave strikes an object and bounces off
Term
Refraction
Definition
Bending of a wave as it enters a new medium
Term
destructive
Definition
Interference when waves subtract from one anothoer
Term
Constructive
Definition
Interferance when waves add together
Term
Diffraction
Definition
When a wave changes direction and bends around an object
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