Transcript Universe Jeopardy Review

Classifying
galaxies
Big Bang
Active
galaxies
Our Local
Group
Random
$200
$200
$200
$200
$200
$400
$400
$400
$400
$400
$600
$600
$600
$600
$600
$800
$800
$800
$800
$800
$1000
$1000
$1000
$1000
$1000
$200
Elliptical
What type of galaxy is on the
far left hand side of the
tuning fork
$400
E0
A spherical galaxy (like M87)
would be classified as
$600
Sa
A spiral galaxy with a large
central bulge and tight arms
would be classified as
$800
E0 is circular, E7 is cigar shaped
How are an E0 and an E7
different?
$1000
Sa hasLarger center (nucleus) and tighter
arms
How can you tell an Sa from an Sc
$200
increasing
Is the expansion rate of the
universe increasing or
decreasing?
$400
Farther it is from us
Hubble’s laws tell us that the
more red shift a galaxy has
the_____________________
(farther or nearer) it is from
us.
$600
expanding
Because the galaxies further
from us are moving away
faster, Astronomers know that
the universe is
$800
An event that started the expansion of the universe
What is the Big bang?
$1000
Dark matter would slow down the universe’s expansion through
gravitational influence, dark energy is accelerating the
expansion.
Contrast how dark matter and dark
energy have different roles in the future
of our universe.
$200
blazar
If we are looking at an active
galaxy directly down through
a jet are we seeing a radio
galaxy or a blazar?
$400
Accretion disk (with infalling matter)
To provide radiate energy,
active galaxies need both a
black hole and an
$600
Interactions with nearby galaxies
or star clusters
What do active galaxies need
to feed their central engines?
$800
Jets, torus, accretion disk
and black hole
Name the parts of an active
galaxy
$1000
Look for jets, torus, accretion disk and black
hole
Draw and label an active
galaxy
$200
Small ellipticals
What type of galaxies compose our Local
Group?
$400
Virgo
What is the nearest huge
cluster of galaxies to our
Local Group
$600
Irregular
What type of galaxies are the
Large and Small Magellanic
Clouds?
$800
Andromeda and the Milky Way
What are the largest members
of the Local Group?
$1000
45 galaxies total, Most are dwarf ellipticals
and irregulars and three spirals: Milky
Way, Andromeda and M33 are spirals
Describe the population, size
and types of galaxies found in
our Local Group
$200
70%
How much of the universe
might be dark energy?
$400
4%
Luminous matter accounts for
what percentage of the
Universe’s total mass?
$600
Galaxies are redshifting
The fact that photons are
stretched as they travel and
space itself is expanding
through time comes from the
fact that
$800
distance
The greater a galaxies redshift the greater
it’s
$1000
Neil deGrasse Tyson
Mrs. Painter’s favorite
astronomer is