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Waves: Vocabulary
Cummo
20
Science
8th Grade
12/05/2011

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Term
wave
Definition
any disturebance the transfers energy from 1 place to another through matter or space
Term
meduim
Definition

material through which waves can travel

(solid, liquid, gas)

Term
mechanical wave
Definition
waves that need a medium to travel
Term
transverse wave
Definition

waves that go up and down

(patricles)

Term

longitudinal wave

(compression wave)

Definition
patricles vibrate back and forth along the path that the wave moves
Term

compression

(move foward)

Definition
action of compressing or being compressed
Term
rarefraction
Definition
a decrease in the density of something
Term

surface wave

(think surfer)

Definition

go toward and up and down

(transverse & longitudinal wave)

Term
crest
Definition
highest point or peak of a wave
Term
trough
Definition
lowest point or valley of the wave
Term
wavelength
Definition
distance between identical points in the waveform
Term
amplitude
Definition
distance between the peak of a wave and the midpoint of the wave
Term
frequency
Definition
number of cycles that pass the observer in a given time
Term
wave period
Definition
a measure of time- how long it takes for the full wave to pass a point
Term
reflection
Definition
when wave bounces back after striking a barrier
Term

diffraction

dork = diffraction (Kelsey)

Definition
the waves spread out when they pass though a small gap
Term

constructive interferance

(makes things bigger)

Definition
when you add 2 waves together to make a bigger wave
Term
destructive interference
Definition
interference is the addition of 2 or more waves that results in a new wave pattern
Term
resonance
Definition
quality in a sound of being deep, full, and reverberating
Term
refraction
Definition
waves bend when they pass through a boundary
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