Astronomy Quiz 17

The most elongated of the elliptical galaxies are class:

• Ea

• Sb

• E0

• E7

• Irr 1

The most circular of the elliptical galaxies are class:

• Ea

• Sb

• E0

• E7

• Irr 1

A supercluster is a

• Group of globular star clusters

• Group of open star clusters

• Cluster of several dozen galaxy clusters

• All of the above

The Local Group is

• The name of the spiral arm of our Galaxy in which the Sun is located

• The group of planets around the Sun

• A star cluster to which the Sun belongs

• A cluster of galaxies in which the Milky Way is located

An encounter in which a large galaxy absorbs a smaller galaxy is referred to as

• A "splash encounter"

• A "big merger"

• "Galactic cannibalism"

• An "unbalanced merger"

Which of the following are active galaxies?

• Radio Galaxies

• Quasars

• Seyfert Galaxies

• All of the above

• Both A and C

A(n) ___ type galaxy is ___ with elongated central regions.

• Sa; a spiral galaxy

• E0; an elliptical galaxy

• E7; a spiral galaxy

• SB; a spiral galaxy

_____ type galaxies contain ____ because they have not used up their gas and dust in making _____.

• Irregular; large amounts of gas and dust; stars

• Elliptical; large amounts of gas and dust; a disk

• Spherical; small amounts of gas and dust; stars

• Spiral; small amounts of gas and dust; dark clouds

____ galaxies have smaller nuclei and loosely wound arms compared to ____ galaxies.

• Sd; Sc

• Sa; Sb

• Sa; S0

• E0; S0

Hubble's law implies that the _____ galaxies have larger _____ in their spectral lines.

• More distant; red shift

• More distant; blue shift

• Nearby; blue shift

• Nearby; red shift