Astrophysics Study Guide Flashcard
Unlock all answers in this set
Unlock answersquestion
chapter 12
answer
...
question
what dust is emitted into to create galaxies
answer
interstellar medium
question
giant molecular clouds which are cool and dense collapse into
answer
cluster of stars
question
if temp reaches 10,000,000K what happens
answer
nuclear fusion into a protostar
question
high mass stars have higher luminosity than low mass stars (t or f)
answer
true
question
chapter 13
answer
read full summary to understand process of white dwarf. draw it out
question
Chapter 14
answer
........
question
MS stars are in their ______ life stage
answer
longest (90%)
question
luminosity ratio of ms
answer
1,000,000:1
question
mass measures amount of fuel
answer
luminosity measures the rate its burned
question
indicator of cluster's age
answer
turnoff point
question
older clusters have turn off points further ______ the MS
answer
down
question
oldest clusters that are 12 billion years
answer
globular
question
Chapter 15
answer
.........
question
brighter cepheids
answer
longer periods of light variation
question
milky way spirals on outside
answer
island galaxies
question
center of our universe
answer
130000pc
question
milky way size
answer
300000 lightyears
question
who believed nebulae were island galaxies
answer
curtis
question
modern view of the universe launch
answer
1925
question
before 1925 what were astronomers stuck on
answer
milky way was entire universe finite and static
question
slipher's discovery
answer
most galaxies are moving away from us
question
chapter 17
answer
......
question
using 100 inch telescope what did Hubble discover
answer
cepheids in nearby spiral galaxies, including andromeda
question
how can we estimate the distance of a cepheid
answer
light variation
question
stars > 8 solar masses
answer
become supernovas (blackholes)
question
stars < 8 solar masses
answer
become white dwarfs
