Exam 3 Astronomy 104 Fall 2007
Format of the exam
In general the format of this exam will be similar to the first two
exams.
- 10 - 15 points for "matching"
- 10 -15 multiple choice...on this exam there are none of the "one word"
answer questions....they all became multiple choice.
- 4 short answer; two of these need one or two sentences, two of them need
more (a bulleted list of points is okay fine). The point values will
indicate which two are longer.
- 4 problems
Note that there will be a section with questions about evolutionary tracks on
the HR diagram. I will give you a figure of the HR diagram with several
evolutionary tracks and some points labeled, and ask questions about what stage
of evolution is represented by some of the labeled points. This is part of what
I listed as "matching".
You should review the in class worksheets, and understand both the math and
the concepts that were involved. Here is a list of worksheets we did in class:
- Stellar Evolution (this one had a table that you filled out with
Luminosity, Absolute Magnitude, and maximum observable distance for a solar
mass star at different stages of evolution)
- Energy Generation in the Sun
- Supernova Energetics
- Cepheid Variable Stars
There was only one set of out of class practice problems:
- Practice Problems: Stellar Evolution
The exam covers Cepheid Variables but not the material on the introduction to
the Milky Way from Wednesday's class.
List of topics (by chapter) for exam 3
Review the weekly study questions, the in class worksheets, and the
practice problems
Chapter 20 (week 8 & 9)
- evolutionary tracks
- core nucleosynthesis: solar mass stars
- core nucleosynthesis massive stars
- post main sequence evolution solar mass stars
- post main sequence evolution massive star)
- helium burning, helium flash
- shell burning
- electron degeneracy
- giants
- supergiants
- formation of planetary nebulae
- characteristics of white dwarfs
- evolution in binary systems
- effect of mass transfer in binary systems
- the Algol system
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- hydrogen burning
- red giant branch
- helium flash
- asymptotic giant branch
- main sequence turn off
- main sequence fitting
- degeneracy
- planetary nebula
- white dwarf
- contact binary
- Roche lobe
- Lagrange point
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Chapter 21 (week 10 & 11)
- characteristics and what causes nova
- characteristics and what causes type I supernova
- characteristics and what causes Type II supernova
- nucleosythesis in massive stars
- formation of the elements
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- nova
- type I supernova
- type II supernova
- supernova remnant
- accretion disk
- nucleosynthesis
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Chapter 22 (week 10 & 11)
- characteristics of neutron stars
- characteristics of pulsars
- characteristics of gamma ray bursts
- characteristics of black holes
- observations of black holes
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- neutron star
- pulsar
- black hole
- Schwarzchild radius
- event horizon
- x-ray burster
- gamma ray burst
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Chapter 23 (week 11)
- Cepheid variable stars
- Distances using Cepheids
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