astronomy quiz #2 jeopardy review game. gravitylife cycle of stars galaxieschallenge!the big bang...
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Astronomy Quiz #2
Jeopardy Review Game
Gravity Life Cycle of Stars
Galaxies Challenge! The Big Bang and
the Universe
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What is gravity’s role in the formation of a
protostar?
Gravity pulls together the gas and dust in a
nebula to form a protostar.
What is gravity’s role in the start of nuclear fusion in the core of a
star?
Gravity pulls hydrogen gas close together, creating a
hot and dense environment,
allowing nuclear fusion to occur.
What two forces must be in balance in order for a main sequence
star to remain stable?
The inward force of gravity must be
balanced with the outward force of
energy created by fusion.
What is gravity’s role in the creation of a
white dwarf?
Gravity collapses the core of a star into an
extremely dense object.
Without gravity, there would be no
____________ (list at least 3 things.)
Planets, stars, solar systems, galaxies
Stars are formed from a cloud of gas and
dust called a __________.
Nebula
The type of object that a star becomes when it dies depends
the star’s ________.
mass
A star spends most of its life in this stage.
Main sequence
After the super red giant phase, a very
high mass star erupts in an explosion called
a _________
Supernova or hypernova
Name the three objects a star might become when it dies.
Black dwarf, neutron star, black hole
Name three shapes that galaxies can
have.
Elliptical, spiral, and irregular
Put these structures in order from smallest to largest: universe,
star, galaxy, solar system
Star, solar system, galaxy, universe
What object is located at the center
of many galaxies (including ours)?
A supermassive black hole
In what part of our galaxy is Earth
located?
In one of the outer spiral arms
Which are true?
A. All galaxies are the same age.B. All galaxies are moving apart from each other.C. Galaxies contain hundreds of billions of stars.
A. False: All galaxies are the same age.
B. True: All galaxies are moving apart from each other.
C. True: Galaxies contain hundreds of billions of stars.
All the matter in the universe came from
this object.
A singularity
The formation of what element in the
core of a massive star triggers a supernova?
Iron
What is a quasar?
Quasars are the enormously powerful
jets of radiation blasting out from a supermassive
black hole.
How do we know that dark matter exists?
We know dark matter exists because,
without it, galaxies would not be held
together.
How do we know dark energy exists?
We know dark energy exists because it is
causing the expansion of the
universe to speed up.
Because of the Big Bang, galaxies are doing
this.
Moving away from each other
About how long ago did the Big Bang
occur?
About 14 billion years ago
Describe two characteristics of the universe immediately
after the Big Bang.
The universe was extremely hot and it
was expanding rapidly.
How are galaxies distributed
throughout the universe?
Galaxies are grouped together in clusters and
superclusters.
Billions of years from now, what will
happen to Earth?
Earth will be vaporized as the Sun expands into a red giant.
Or, possibly, Earth will be flung somewhere else in the universe as the Milky Way collides with Andromeda.