# Shared Flashcard Set

## Details

Waves
CSET
26
Physics
01/29/2016

Term
 Types of Waves
Definition
 Mechanical Transmit waves through matter Electromagnetic Transmit energy through a vacuum
Term
 Types of Waves
Definition
 Mechanical Transmit waves through matter Electromagnetic Transmit energy through a vacuum
Term
 Crest
Definition
 Maximum upward disturbance of a wave
Term
 Trough
Definition
 Maximum downward disturbance of a wave Use resting point as measurement (no distrurbance)
Term
 Amplitude
Definition
 Max mount of displacement from a resting point High energy waves have greater amplitutdes Measures the wave's strength
Term
 Wavelength
Definition
 One complete cycle Crest to Crest
Term
 Rest Position
Definition
 Neither positive nor negative displacement of a wave
Term
 Frequency
Definition
 Measure of how often a particle in a medium vibrate when a wave passes through a medium Usually in Hz (hertz) 1 Hz is 1 Cycle per second 2 hz is equal to 8 cycles per 4 seconds
Term
 Period
Definition
 Measure how long it takes to complete a cycle Measure of time only
Term
 Speed
Definition
 How fast or slow a wave travels Usually measured in terms of distance over time Meters per second
Term
 Longtidunal Waves
Definition
 Waves that travel in the same direction as the particle movement Called pressure, compressional, or density waves Similar to slinky toy
Term
 Shear or Transverse Waves
Definition
 Move in perpendicular to the direction of the particle movement If particles in a medium move up and down, a transverse wave will move forward Only in solids and slower than logitudinal
Term
 Surface (Circular) Waves
Definition
 Travel at the surface of a material and move in elliptical orbits Little slower than shear waves
Term
 Plate Waves
Definition
 Move in elliptical orbits and only occur in very thin pieces of material
Term
 Wave Interfearance
Definition
 If waves travel in the same medium interact
Term
 Destructive Wave
Definition
 If a peak is met by the trough of another wave, can cancel them out
Term
 Wave Interaction
Definition
 Can be in phase or out of phase If peaks align for a wave they are in phase When in phase the displacement is double, out of phase they cancel each other out If somewhat in the middle you add them together to see
Term
 Sound
Definition
 Pressure distance that moves through a medium in the form of mechanical waves Requires a medium to pass through it Transfer energy of particles, not the actual particle
Term
 Electromagnetic Spectrum Formula
Definition
 Frequnecy = Phase Speed / Wave Length   Phase Speed is always 3.0x10^9
Term
 Reflection
Definition
 Wavelengths that are not absorbed Apple is red because it absorbed everything but red light Rough surfaces scatter light Smooth reflect in one dirrection Mirror reflect mainly in a parallel direction
Term
 Refraction
Definition
 Change in any waves direction because of a change in its velocity Can appear distorted because of it
Term
 Visibile Light
Definition
 Longest Wavelength to Shortest (Red to Violet) When entire wavelength comes back it shows as white, no part is black
Term
 Diffraction
Definition
 Diffration refers to the bedning of waves around small objects and the spreading out of waves past small openings. Smaller the opening, greater the difraction. Larger wavelengths also increase diffraction
Term
 Absorption
Definition
 Color depends on what is absorbed
Term
 Transmission
Definition
 Certain wavelength of visible when they interaction with matterm.   WHen wavelengths that are not abosrbed the can by transmistted by transparent material or rerflected by opaque
Term
 Doppler Effect
Definition
 Sound changes based on relative position
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