Electomagnetic spectrum Visible light DopplerWavesLaws Misc $ 200 $ 200$200 $ 200 $ 200 $400 $...
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Transcript of Electomagnetic spectrum Visible light DopplerWavesLaws Misc $ 200 $ 200$200 $ 200 $ 200 $400 $...
Electomagnetic spectrum
Visible light
Doppler Waves Laws Misc
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Radio waves
The lowest frequency of electromagnetic radiation is
$400
It is both
Is electromagnetic radiation a wave or a particle?
$600
Visible and radio
Two forms of electromagnetic radiation that penetrate the atmosphere best
are:
$800
Gamma rays
The part of the electromagnetic spectrum with the shortest
wavelength is
$1000
White light is all the colors blended together uniformly
What is white light?
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Rainbow
What is an example of a classic continuous spectrum
$400
violet
The visible light with the shortest wavelength is
$600
visible
What type of radiation can be observed well from Earth’s
surface?
$800
red
Which color of electromagnetic radiation has the longest wavelength?
$1000We don’t for sure. Since lightmust travelo millions of light years, the light we see is
millions of years old.
How do we know that a star in a distant galaxy is still
there?
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red
Objects we are moving away from appear
$400
Doppler effect
When you hear a siren change pitch as it approaches
you this is an example of
$600
No shift at all (not blue or red) so it will appear yellow
The light from an object moving from right to left will
exhibit
$800
An object moving towards us would appear
blue
$1000
You can give its radial velocity, either towards or away from us.
What information can be inferred about a star from its
Doppler shift?
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radio
What type of wave has the lowest energy
$400
halved
If a waves frequency doubles it wavelength is
$600They both transfer energy.
Sound needs a medium, light travels in space
How are sound waves and electromagnetic radiation
similar? How are they different?
$800Frequency times the wavelength
A wave’s velocity is the product of the
$1000
Sound travels through a material medium, and can not travel through a vacuum
Why can you hear a tree fall in the forest but you can’t
hear me slam the space capsule door in space?
$200
Photon
Individual packet of electromagnetic radiation
$400
An analysis of the way atoms absorb and emit light is
Spectroscopy
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Kelvin
Temperature scale that places zero at the point where all
atomic motion ceases.
$800
fourth
According to Stefan’s Law: The total energy radiated
by a black body is dependent on the
_______________power of its temperature
$1000
Does diffraction show wave nature or Particle nature of
light?
Wave
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6
The distance between two crest is 6 cm and the distance from the median to the top of the
crest is 4 cm. what is the wavelength?
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¼ or .25 Hz
A wave has a period of 4 seconds, what is it’s frequency
$600
It’s temperature
The wavelength of an object’s blackbody radiation
is dependent on?
$800Stefan’s
If the sun’s temperature were doubled, it would give off 16X’s
more energy is an example of what law?
$1000
A few bright emission lines
What kind of spectrum would a neon light give us?
