s2w2 Doppler shifts, scattering, reflecting, and transparency
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Last updated 3 months ago
23 questions
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Question 1
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Review q - How can you tell what kind of gas is emitting light?
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Question 2
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review q - Given that water absorbs microwaves very strongly, explain why the inside of a poptart gets significantly hotter than the crust around it?
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Question 3
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What is the difference between emission and absorption in terms of what happens to an electron in an atom?
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Question 4
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Watch about Rayleigh scattering do you have any questions?
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Question 5
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Light is created by
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Question 6
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If you add two waves that are 1/2 wavelength off each other they
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Question 7
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Read 3.6-3.7 - do you have any questions?
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Question 8
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Think about how an ambulance sounds when it is sitting still. Then think about how different the ambulance sounds when it passes by. (you can listen to it here) how would describe the difference
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Question 9
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Using the doppler shift, we should be able to tell if a star is moving
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Question 10
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What does the atmospheric window refer to?
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Question 11
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in what way is the atmospheric window very good for us?
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Question 12
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In what way is the atmospheric window bad for astronomers
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Question 13
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What is the astronomers solution to this problem?
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Question 14
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Watch this video about why glass is transparent.
Do you have any questions?
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Question 15
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Radio waves are higher energy or lower energy than visible light?
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Question 16
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Radio waves are likely to have enough energy to make electrons to jump to the next level
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Question 17
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Can a radio work in a room with no windows? What does that tell you about how transparent the walls are to radio waves?
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Question 18
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UV radiation is higher energy or lower energy than visible light?
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Question 19
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True or false, UV radiation are more likely to have enough energy to make electrons to jump to the next level compared to visible light
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Question 20
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Have you ever gotten a sunburn when sitting inside next to a window?
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Question 21
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What do you think this means about glass, transparency and UV radiation?
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Question 22
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What do you think happens to the energy of the light that is absorbed and not reflected or transmitted by a solid?
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Question 23
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How are you feeling about this?
How molecules scatter light
why atmospheric molecules scatter blue light more than yellow and red light?
why the light scattering happens more in the upper atmosphere than in the lower atmosphere
why the sky is blue
why the sun looks yellow
what is the doppler effect
what red shifting light looks like vs blue shifting light
why atmospheric absorption is a problem for astronomers,
when does light get absorbed by an atom and when does it get transmitted through?