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Phys.Science Ch. 17

04-26-10

QuestionAnswer
Frequency of a wave-- the number of waves that pass through a certain point in a specific amt. of time
more force = more amplitude
Crest-- high point or peak of a wave
Amplitude-- gives indication of how much energy wave has
Wave-- a traveling disturbance that ..carries energy.. from one place to another
A wave is only ______; it's not ______. energy; matter
Every wave starts w/ ________ a vibration
a vibration-- any motion that follows the same path repeatedly
Medium-- the matter through which the wave is transmitted
What are the 2 ...kinds... of waves? Mechanical & Electromagnetic
Describe Mechanical waves. require a medium; ex.: sound wave, earthquake wave, water wave
Describe Electromagnetic waves. don't require a medium; can travel through a vacuum; disturb electric + magnetic fields but can also travel through solid, liquid, or gas
Which kind of wave requires a medium? mechanical
Which kind of wave doesn't require a medium? electromagnetic
List the three ...types... of waves. transverse, longitudinal,+ surface
Transverse wave-- the motion of the medium is perpendicular to the motion of the wave
Transverse wave-- example: light wave (type of wave)
Longitudinal wave-- motion of the medium is parallel to the direction of the wave
Longitudinal wave-- example: sound wave (type of wave)
the fastest speed known to man @ this point in time the speed of light in a vacuum
Which kind of wave can travel through a vacuum? electromagnetic
Which kind of wave disturbs electric and magnetic fields? electromagnetic
Created by: hcmeek
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