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Waves
Waves Vocabulary
33
Science
9th Grade
04/14/2014

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Term
Energy
Definition
Carried by waves and does work
Term
Tsunami
Definition
Large energy water wave
Term
Matter
Definition
Is not transported by waves
Term
Disturbance
Definition

Origin of a wave.

 

Term
Medium
Definition
The matter waves travel through.
Term

Air

 

Definition
The medium of sound waves
Term
Mechanical waves
Definition
Require a medium in order to travel
Term
Examples of mechanical waves
Definition
sound and water waves
Term
Transverse waves
Definition
The medium travels perpendicular to the direction of the wave.
Term

Longitudinal waves

 

Definition
Another name for compressional waves
Term
Resting position
Definition
Between a crest and trough of a transverse wave
Term
Crest
Definition
High point of a transverse wave
Term
Trough
Definition
Low point of a transverse wave
Term
wavelength
Definition
The distance between one point on a wave and the nearest point just like it.
Term
Frequency
Definition
the number of wavelengths that pass a fixed point each second.
Term
Period
Definition
The amount of time it takes one wavelength to pass a point.
Term
Seconds
Definition
The unit of period of a wave
Term
Hertz
Definition
The unit of frequency.
Term
Commpression
Definition
The part of a longitudinal wave which are close together
Term
Rarefaction
Definition
The part of a longitudinal wave which are farther apart
Term
High amplitude of a longitudinal wave
Definition
Very dense regions of compressions.
Term

High Amplitude of a transverse wave.

 

Definition
A larger disturbance and difference between crest and trough.
Term
Amplitude
Definition
Related to the energy carried by the wave.
Term
Consturctive Interference
Definition
Waves traveling in the same direction overlap and amplify the disturbance.
Term
Destructive Interference
Definition
Two waves cancel or reduce the disturbance.
Term
Electromagnetic Waves
Definition
Transverse waves which do not require a medium
Term
Compressional or Longitudinal
Definition
Created when molecules of the medium are pushed back and forth parallel to the direction of the wave motion.
Term
pitch
Definition
Determined by frequency of sound waves.
Term
Reflected waves
Definition
Waves that change direction when they bounce off a barrier
Term
Refraction
Definition
Waves that appear to bend when they go from one medium to another.
Term
Velocity
Definition
The speed of the wave
Term
Lambda
Definition
Symbol of wavelength
Term
Interference
Definition
When two waves meet while traveling in the same medium.
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