# Shared Flashcard Set

## Details

Ch10 PHSC Quiz
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56
Science
03/29/2012

Term
 Wavelength Symbol
Definition
 Lambda ^
Term
 Wavelength Definition
Definition
 The distance between two identical parts on two consecutive waves
Term
 Wavelength of light
Definition
 400-800 nm
Term
 What is Red's wavelength?
Definition
 650-88 nm
Term
 Amplitude
Definition
 the distance from the midline to the crest or trough of a wave
Term
 Greater amplitude means ______ light
Definition
 brighter
Term
 Greater amplitude means ______ sound
Definition
 louder
Term
 Frequency Symbol
Definition
 V
Term
 Frequency Definition
Definition
 How many waves pass a point in one second
Term
 Frequency Units
Definition
 Hertz (Hz) or waves/second
Term
 Period Definition
Definition
 The length of time for a wave to pass a certain point
Term
 Period is the _______ of frequency
Definition
 reciprocal
Term
 Period = ?
Definition
 1/Frequency
Term
 Frequency = ?
Definition
 1/Period
Term
 Wavespeed = ?
Definition
 (Wavelength)(Frequency)
Term
 The speed of light is a __________
Definition
 wave speed
Term
 Speed of light formula
Definition
 C = 3x10^8 m/s
Term
 Sound waves travel through ______ while light waves travel through ______.
Definition
 molecules & a vacuum
Term
 Speed of sound in the air is _____
Definition
 340 m/s
Term
 Direction of Transverse waves
Definition
 perpindicular to the direction of the vibrating source
Term
 Examples of transverse waves
Definition
 guitar strings, string instruments, radio waves
Term
 Direction of Longitudinal waves
Definition
 along the direction of the vibrating source
Term
 Example of a longitudinal wave
Definition
 spring going up and down, or sound waves
Term
 A wave of _________ passes along the Slinky
Definition
 compression
Term
 Between each compression is an area of ___________
Definition
 Rarefaction
Term
 Rarefaction
Definition
 a stretched region
Term
 Areas of compression and rarefaction only occur in a
Definition
 solid liquid or gas
Term
 Sound waves can travel through _______ & _________ because the molecules are ________
Definition
 liquids, solids, vibrating
Term
 Solids transfer sound the best or worst?
Definition
 Best
Term
 Cats and dogs detect frequencies higher than humans
Definition
 true
Term
 A concert hall must have a balance of _______ & ___________
Definition
 reverbration and absorption of sound
Term
 Reverbration increases in ________ shapes
Definition
 elliptical
Term
 Sounds does NOT travel through a ______-
Definition
 vacuum
Term
 Reverbrations are like...
Definition
 echoing
Term
 Sound _____ from a smooth surface, just like light
Definition
 reflects
Term
 Carpet, chairs, drapes _____ sound
Definition
 absorb
Term
 reFRACTION
Definition
 bending of soundwaves
Term
 when reFRACTION occurs when sound is traveling through...
Definition
 air of uneven temperature
Term
 on a warm day the sound bends.....
Definition
 upward
Term
 Dog can hear his master better on a ________ day because the air bends downwards
Definition
 cold
Term
 Forced Vibrations
Definition
 dropping or striking an object
Term
 You hear the _____ with forced vibrations
Definition
 natural frequency
Term
 Resonance
Definition
 forced vibrations match the natural frequency
Term
 Interference
Definition
 one waves overlaps another
Term
 Constructive interference ________ amplitude
Definition
 increases
Term
 Destructive interference _________ amplitude
Definition
 decreases
Term
 Node
Definition
 zero amplitude
Term
 tone
Definition
 a distinctive pitch or frequency and duration
Term
 Doppler Effect
Definition
 a change of frequency of a wave due to motion
Term
 Example of the Doppler Effect
Definition
 ambulance siren, passing racecar
Term
 Spinning star shows a ______ shift and a _____ shift
Definition
 red, blue
Term
 bow wave
Definition
 when the object is moving faster than the wave speed
Term
 If a plane travels faster than the speed of sound, a ____________ is produced
Definition
 shock wave
Term
 When the shock wave passes by, you hear a ___________
Definition
 sonic boom
Term
 A shockwave consists of
Definition
 a high pressure and a low pressure
Term
 Fundamental frequency
Definition
 the lowest frequency of a musical note
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