Galaxies 2022

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

• A) Globular clusters.
• B) Galactic bulge.
• C) Galactic halo.
• D) Galactic center.
• E) spiral arms.

2) Most active galactic nuclei are powered by:

• A) supermassive black holes.
• B) mergers of compact objects.
• C) extra-terrestrial civilizations.
• D) a large number of supernovae.
• E) black hole mergers.

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

• A) Galactic disk.
• B) Galactic bulge.
• C) Corona.
• D) Galactic center.
• E) Galactic halo.

4) What is the nearest huge cluster of galaxies to our Local Group?

• A) Orion Nebula
• B) Coma Cluster
• C) Hercules Cluster
• D) Virgo Cluster
• E) Centaurus Cluster

5) Density waves may explain:

• A) the large number of open clusters in the Galactic halo.
• B) the spiral arm structure of the Galaxy.
• C) the lack of blue stars in the Galactic halo.
• D) the density of red stars in the Galactic bulge.
• E) the random orbits of Galactic halo stars.

6) For finding the distance to M31, Hubble relied upon:

• A) type II supernova in its spiral arms.
• B) type I supernova in its core.
• C) planetary nebulae near its core.
• D) Cepheid variables in its spiral arms.
• E) RR Lyrae stars in its globular clusters.

7) Most galaxies in the Local Group are:

• A) dwarf spirals.
• B) small irregulars similar to the Magellanic Clouds.
• C) larger spirals than either the Milky Way or M-31 in Andromeda.
• D) brown dwarfs, with even more dust than our own Galaxy.
• E) dwarf ellipticals, similar to the companions of M-31.

8) Which is the correct description of the Sun's location within the Milky Way?

• A) as Herschel found, very close to the Galactic center
• B) at the outer edge of the Galactic bulge but in the plane of the disk
• C) in the disk and about one-half a galactic radius from the center
• D) above the disk and about one-third of the galactic radius from the center
• E) in the disk but at its outer edge

Tags

NGSS.MS-ESS1-2

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

• A) the Sun's orbital velocity and its distance from the Galactic Center
• B) the Sun's mass and its age
• C) the Sun's age and period of the Galactic Year
• D) the Sun's composition and luminosity
• E) the Sun's mass and velocity in orbit of the Galactic Center

Tags

NGSS.HS-ESS1-4

NGSS.HS-PS2-4

10) Between us and the Galactic Center, the Milky Way has a mass of:

• A) 100 billion suns.
• B) one to two million suns.
• C) over a trillion suns.
• D) several hundred thousand suns.
• E) 250 million suns.