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Unit 3 Test
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24
Physics
9th Grade
12/05/2012

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Term
Incident Ray
Definition
The initial wave length.
Term
Reflected Ray
Definition
A ray that is reflected.
Term
Refracted Ray
Definition
A ray that is bended.
Term
Angle of Incidence
Definition
The initial Angle.
Term
Angle of Refraction
Definition
The angle that causes the bending of the ray.
Term
Angle of Reflection
Definition
The angle that causes the reflection of the ray.
Term
Amplitude
Definition
The measurement from the base of the wave to the crest.
Term
Wavelength
Definition
The distance from one crest to the next.
Term
Period
Definition
It is the frequency of the wave.
Term
Frequency
Definition
The amount of waves in a certain amount of time.
Term
Crest
Definition
The top of a wave.
Term
Trough
Definition
The lowest point of a wave.
Term
Compression
Definition
It causes the wave to have a higher frequency.
Term
Rarefaction
Definition
It causes the wave to have a lower frequency.
Term
Destructive Interference
Definition
It causes the wave to brake.
Term
Constructive Interference
Definition
It causes the wave to become bigger.
Term
Diffraction
Definition
An obstacle that the wave encounters.
Term
Double-slit Interference
Definition
A double obstacle the wave encounters.
Term
Wave Speed
Definition
The speed of the wave per the amount of time.
Term
Longitudinal Wave
Definition
A wave that goes in the same direction as the force source.
Term
Transverse Wave
Definition
A wave that goes perpendicular to the power source.
Term
Snell's Law
Definition
The law of refraction which states that the waves bend.
Term
T= 1/f
Definition
The time that it takes for the wave to make a complete wave length.
Term
Wavelength
Definition
Wave-speed times period.
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