Quiz about Milky Way Galaxy REVIEW

Question 1

A collection of stars, dust, and gas bound together by gravity

Accepted Answer

Galaxy

Answer

Galactic disk

Answer

spiral arm

Answer

dark halo

Question 2

Flattened region of gas and dust that bisects the galactic halo in a spiral galaxy; region of active star formation.

Accepted Answer

Galactic disk

Answer

Spiral galaxy

Answer

spiral arm

Answer

variable star

Question 3

Thick distribution of warm gas and stars around the galactic center

Accepted Answer

Galactic bulge

Answer

Galaxy

Answer

spiral arm

Answer

dark halo

Question 4

Region of a galaxy extending far above and below the galactic disk, where globular clusters and other old stars reside

Accepted Answer

Galactic halo

Answer

Dark halo

Answer

dark matter

Answer

variable star

Question 5

Galaxy composed of a flattened, star-forming disk component which may have spiral arms and a large central galactic bulge

Accepted Answer

Spiral galaxy

Answer

Variable stars

Answer

Galactic center

Answer

Rotation curve

Question 6

A star whose luminosity changes with time

Accepted Answer

variable star

Answer

pulsating variable stars

Answer

dark matter

Answer

self-propagating star

Question 7

A star whose luminosity varies in a predictable, periodic way

Accepted Answer

pulsating variable stars

Answer

dark matter

Answer

self-propagating star

Answer

variable star

Question 8

The center of the Milky Way, or any other galaxy.

Accepted Answer

Galactic center

Answer

Variable stars

Answer

Spiral galaxy

Answer

Rotation curve

Question 9

Distribution of material in a galaxy forming a pinwheel-shaped design, beginning near the galactic center

Accepted Answer

spiral arm

Answer

Spiral galaxy

Answer

Galactic disk

Answer

variable star

Question 10

Plot of the orbital speed of disk material in a galaxy against its distance from the galactic center.

Accepted Answer

Rotation curve

Answer

Variable stars

Answer

Galactic center

Answer

Spiral galaxy

Question 11

Region of a galaxy beyond the visible halo where dark matter is believed to reside

Accepted Answer

dark halo

Answer

Galaxy

Answer

Galactic bulge

Answer

spiral arm

Question 12

Mass in galaxies and clusters whose existence we infer from rotation cureves and other techniques; unconfirmed.

Accepted Answer

dark matter

Answer

rotation curve

Answer

dark halo

Answer

variable star

Question 13

The Milky Way is simply our edge-on view of our home Galaxy.

Accepted Answer

This statement is TRUE

Answer

This statement is FALSE

Question 14

Spiral arms are regions of star formation, which accounts for their blue color.

Accepted Answer

This statement is TRUE

Answer

This statement is FALSE

Question 15

The majority of the mass in the Milky Way lies farther out than the Sun's orbit.

Accepted Answer

This statement is TRUE

Answer

This statement is FALSE

Question 16

The part of the Milky Way we  are most familiar with is the:

Accepted Answer

Galactic disk.

Answer

Corona.

Answer

Galactic halo.

Answer

Galactic bulge.

Answer

Galactic center.

Question 17

Galactic disks appear blue because:

Accepted Answer

O and B blue giants are much brighter than G, K, or M dwarfs.

Answer

dust obscures the longer, red wavelengths.

Answer

they contain no G, K, or M dwarfs.

Answer

they contains only blue reflection nebulae.

Question 18

Most of the new star formation in the Galaxy is found in the:

Accepted Answer

spiral arms.

Answer

Galactic center.

Answer

Globular clusters.

Answer

Galactic halo.

Answer

Galactic bulge.

Question 19

From Earth the view of the Milky Way is a thin band of stars across the night sky. Which part of the Milky Way galaxy is this?

Accepted Answer

Galactic disk

Answer

globular cluster

Answer

Galactic halo

Answer

spiral arm

Answer

Galactic bulge

Question 20

In the Galactic halo, we do NOT find:

Accepted Answer

spiral arms.

Answer

small satellite galaxies.

Answer

tidal streams.

Answer

old white dwarfs.

Answer

globular clusters.

Question 21

Star formation ceased (stopped) first in the

Accepted Answer

Galactic halo.

Answer

spiral arms.

Answer

Galactic disk.

Answer

Galactic nucleus.

Answer

Galactic bulge.

Question 22

In the formation of out Galaxy, which of the following formed FIRST?

Accepted Answer

globular clusters

Answer

Galactic center

Answer

spiral arms

Answer

planetary nebulae

Answer

Galactic disk

Question 23

Which sequence of star formation in our Galaxy by age is correct, Oldest to Youngest?

Accepted Answer

globular clusters, emission nebulae, open clusters

Answer

spiral arms, bulge, halo

Answer

halo, spiral arms, globular clusters

Answer

dark nebulae, planetary nebulae, emission nebulae

Question 24

Density waves may explain

Accepted Answer

the spiral arm structure of the Galaxy.

Answer

the lack of blue stars in the Galactic halo.

Answer

the large number of open clusters in the Galactic halo.

Answer

the random orbits of Galactic halo stars.

Answer

the density of red stars in the Galactic bulge

Question 25

The leading explanation for the existence of spiral arms is

Accepted Answer

passages of spiral density waves through the interstellar medium.

Answer

passages of massive globular clusters through the Galactic plane.

Answer

shock waves from cyclic supernovae explosions.

Answer

shock waves from the quasar-like eruption of the Galactic core.

Question 26

Which of the following is most like the rotation of stars in the Milky Way?

Accepted Answer

cars moving at a constant speed on a circular race track

Answer

the planets in our solar system

Answer

the tire of a car moving

Answer

a DVD in a player

Answer

the hands of an analog clock

Question 27

What two observations allow us to calculate the Galaxy's mass?

Accepted Answer

the Sun's orbital velocity and its distance from the Galactic center

Answer

the Sun's age and period of the Galactic Year

Answer

the Sun's composition and luminosity

Answer

the Sun's mass and velocity in orbit of the Galactic center

Answer

the Sun's mass and its age

Question 28

We can estimate the mass of the Galaxy from observations of its

Accepted Answer

rotation curve.

Answer

rotation mass.

Answer

rotation velocity.

Answer

rotation orientation.

Milky Way Galaxy REVIEW

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