# Shared Flashcard Set

## Details

Unit 6
Vibrations and Waves
33
Physics
11/01/2012

Term
 Where are vibrations and waves?
Definition
 EVERY-FUCKING-WHERE
Term
 How do waves occur?
Definition
 Some naturally occur, some are man-made
Term
 What is a wave?
Definition
 Any disturbance that transmits energy through matter or energy
Term
 Waves travel from one place to the next. Does it take materials with it?
Definition
 HEEEEEELL NO!!!!
Term
 As a wave travels it does work on _______________________.
Definition
 Everything in its path
Term
 How do waves transfer energy?
Definition
 vibrating particles
Term
 What is a medium?
Definition
 Substance through which a wave can travel, and can be a solid, liquid, or gas
Term
 What is a vibration?
Definition
 Back-and-forth movement of a particle
Term
 What happens when a particle vibrates?
Definition
 When a particle vibrates it hits particles near it, causing them to vibrate hitting more particles, and a chain reaction occurs
Term
 What is a mechanical wave?
Definition
 It requires a medium
Term
 What are some examples of mechanical waves?
Definition
 Sound, aquatic waves
Term
 What is an electromagnetic wave?
Definition
 They do not require mediums to travel
Term
 What are the examples of electromagnetic waves?
Definition
 G, AM, FM radio waves, Microwaves, X rays, Infrared waves, Visible light, Ultraviolet, and Gamma radiation
Term
 What are transverse waves?
Definition
 The particles vibrate up and down, perpendicular to the direction the wave is traveling
Term
 What are longitudinal waves?
Definition
 The particles vibrate back-and-forth along the path that the wave travels
Term
 What is amplitude?
Definition
 maximum distance the wave vibrates from its rest position
Term
 What are some units of amplitude?
Definition
 cm,nm,etc.
Term
 If there is a greater amplitude the energy ___________.
Definition
 Increases
Term
 What is wavelength?
Definition
 Distance between any two adjacent crests/trough/compressions/rarefactions
Term
 What is frequency?
Definition
 # of wave oscillations per unit of time
Term
 What is the units for wavelength?
Definition
 cm,nm,etc.
Term
 What are units for frequency?
Definition
 Hz
Term
 What is period?
Definition
 time it takes one wave oscillation
Term
 What are the units for period?
Definition
 ns, ms, etc.
Term
 What is the equation for frequency?
Definition
 Frequency=1/period
Term
 What is the equation for period?
Definition
 Period=1/frequency
Term
 What is the equation for wavespeed?
Definition
 a) Wavespeed=wavelength/periodb) Wavespeed=(wavelength)(frequency)
Term
 What is wave interference?
Definition
 When more than one wave exists in the same space, the waves overlap and form wave interference.
Term
 Within the pattern , wave effects may be ______________________________________.
Definition
 Increased, decreased, or neutralized.
Term
 What is displacement?
Definition
 a waves position relative to its rest position
Term
 When more then one wave occupies the same space at the same time the displacement ___________________.
Definition