The Doppler Effect, 8th Sound and Light review
what is responsible for sound's loudness?
Amplitude
Doppler effect for light showing the shorter wavelength for light from an object moving towards the observer.
Blue shift
change in the apparent frequency of a wave as observer and source move toward or away from each other
Doppler Shift
If a wave source is moving towards you, what happens to the wave?
It gets 'bunched up' and the wavelength gets shorter and the frequency higher
The doppler effect with light, showing a longer wavelength for objects moving away from the observer.
Red Shift
Lower frequency
Source moving away from us (frequency)
Lower pitch
Source moving away from us (pitch)
Shifted towards the right, red end of the spectrum
Source moving away from us (red shift)
Longer wavelength
Source moving away from us (wavelength)
Higher frequency
Source moving towards us (frequency)
Higher pitch
Source moving towards us (pitch)
Shifted towards the left, blue end of the spectrum
Source moving towards us (red shift)
Shorter wavelength
Source moving towards us (wavelength)
The apparent change in frequency (pitch) that we notice when a source of sound is moving past us.
The Doppler Effect
If a wave source is moving away from you, what happens to the wave?
The wave gets spread out, the wavelength gets longer and the frequency gets lower
When an object moves towards a sound the sound waves increase in _______
frequency
Which travels faster, light or sound?
light
We see a banana as yellow because the color yellow is __________
reflected
The wave phenomena when that occurs when light hits aluminum and bounces off?
reflections
The bending of light as it passes from one medium to another________
refraction
All sounds begins with ___________
vibrations
Color seen when all visible light colors are reflected?
white