Waves Flashcards
Illuminated
Is lit up
Vacuum
Out space means no medium which means no sound
Doppler effect
Frequency of a wave changes pitch with a moving wave (sound) source
Reflection
When light bounces off an object and sound echoes
Refraction
When light bends
Goes from one medium to another
Changes wave speed
Diffraction
Bending if waves around an object
Constructive interference
Waves come together and the amplitude increases
Destructive interference
Waves come together and amplitude decreases
Roy g biv
Goes from largest to shortest wavelength
Electromagnetic waves shortest to longest
Gamma rays, X rays, ultra violet, visible light, infrared, microwaves, radio waves
Transferse
Light wave moves perpendicular to the medium
Frequency
Certain amount of wavelengths passed In a certain time measured in Hz
Sound
Requires a medium
Elastic
Ability of a solid to return back to its original shape
Human hearing
20Hz 20,000 Hz
Hz
Measures frequency
Ultrasonic
Above 20,000 Hz
Infrasonic
Below 20 Hz
Outer ear
Funnels sound into ear
Middle ear
Transmits sound *ear drum
Inner ear
Converts sound *choclea sends to brain
Wave speed
Depends on type and temperature of the medium as well as how elastic the medium is
Solid
Definite shape and volume
Liquid
Definite volume
No definite shape
Gas
No definite shape and no definite volume
Decibel range
10-140dB threshold for pain
Super sonic
Faster than the speed of sound
Longitudinal
Sound wave
Moves parallel to the medium
Frequency related to
Pitch
Amplitude related to
Loudness
Luminous
Makes its own light
