Shared Flashcard Set

Details

DeYoung review
Questions for final exam
21
Astronomy
Undergraduate 2
12/04/2017

Additional Astronomy Flashcards

 


 

Cards

Term
purposes of the moon
Definition
give light
clock, calendar, compass
determines seasons (stabilizes earth's tilt)
creates tides
Term
what happens with a lunar eclipse?
Definition
full moon
can be seen anywhere
moon turns reddish
Term
what happens with a solar eclipse?
Definition
new moon
can only be seen in path of totality
sun's corona can be seen
Term
theories of solar system's origin
Definition
fission, capture, nebula/accretion
Term
time period that comes from the Bible
Definition
7-day week
Term
why Pluto isn't a planet
Definition
too small (nearby objects are bigger; it's gravity is too small to clear orbit path of debris)
Term
how Aurora exist
Definition
magnetic field moves solar wind to polar caps
Term
sunspots (def)
Definition
particles stirred up by electrical & magnetic fields
Term
Maunder Minimum
Definition
low # of sunspots -> severe weather (1645-1710
Term
parallax
Definition
seeing how star moves left-right-up-down to determine distance
Term
redshift
Definition
seeing how star moves closer or farther away to determine distance
Term
what spectrum reveals
Definition
chemical composition, mass, weight, density
Term
binoculars + Milky Way =
Definition
see the individual stars
Term
How many galaxies in Local Group?
Definition
30
Term
where Big Bang came from (secular science approach)
Definition
kernel of mass-energy
Term
background radiation (def)
Definition
low-energy microwaves
Term
what is light?
Definition
particle and wave
Term
when is Easter?
Definition
full moon after the 1st day of spring
Term
the best kind of telescope
Definition
binoculars
Term
what powers the sun?
Definition
nuclear fusion
Term
how far, in inches, does the moon recede every year?
Definition
1.5
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