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UA - PH/AY 101 - AY 101 Midterm 2 Study Guide - Study Guide

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UA - PH/AY 101 - AY 101 Midterm 2 Study Guide - Study Guide

School: University of Alabama - Tuscaloosa
Department: Astronomy
Course: AY 101 - Intro to Astronomy - Jeremy Bailin
Professor: Jeremy Bailin
Term: Spring 2015
Tags:
Name: AY 101 Midterm 2 Study Guide
Description: Covers class notes since past exam
Uploaded: 10/10/2016
0 5 3 45 Reviews
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background image AY 101 - Midterm #2 Study Guide      White light – reflects all colors  Spectrums— [Kirchoff’s Laws]  1.  Continuous Spectrum          2.  Emission Line Spectrum   
 
 
 
 
 
 
3.  Absorption Line Spectrum              Temperature is a measurement of thermal energy  o  As temperature increases, particles begin to move quicker 
o  Blue photons have more energy than red photons (blue fire hotter than red) 
o  Higher energy = shorter wavelength = higher temperature 
o  Lower energy = longer wavelength = lower temperature 
  Diffuse Gas – photons interact with individual atoms  Dense Material – photons interact with ensembles of atoms    HOT DENSE MATERIAL  HOT DIFFUSE GAS  COOL DIFFUSE GAS IN 
FRONT OF NOT DENSE 
MATERIAL 
INTEN SI TY   INTEN SI TY   INTEN SI TY  
background image       Negative electrons orbit around positive nucleus, electromagnetic attraction instead of gravity 
  Can only orbit at fixed energy levels that are quantized (discrete) 
                Chemical Fingerprints –     The energy levels of the atom depend on the element 
  The wavelengths of the lines tell you what the gas is made out of 
  Vary from element to element 
  Electromagnetic energy is different when you have different numbers of protons and electrons  Terrestrial Planets:    Mercury 
  Mars 
  Earth 
  Venus 
o  “Terra” = earth, made of dense solids (rock, metal) 
o  Differentiated – dense material sunk to center 
How Can We Tell Internal Structures?    Vibrations from earthquakes travel through Earth’s interior 
  Some types of waves (like soundwaves) can travel through both liquid and solid 
  Some (transverse) can only travel through solid 
  p+  3 RD  EXCITED LEVEL    2 ND  EXCITED LEVEL    1 ST  EXCITED LEVEL    GROUND STATE   

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School: University of Alabama - Tuscaloosa
Department: Astronomy
Course: AY 101 - Intro to Astronomy - Jeremy Bailin
Professor: Jeremy Bailin
Term: Spring 2015
Tags:
Name: AY 101 Midterm 2 Study Guide
Description: Covers class notes since past exam
Uploaded: 10/10/2016
6 Pages 45 Views 36 Unlocks
  • Better Grades Guarantee
  • 24/7 Homework help
  • Notes, Study Guides, Flashcards + More!
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