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.