Question 1

The overall distribution of galaxies through space is now found to be galaxies:

Accepted Answer

A) clustered together in several high-density centers, with very little matter between them. 
B) concentrated on the surfaces of huge open spaces or voids, like soap bubbles. 
C) concentrated around one position in space, presumably the original site of the Big Bang. 
D) distributed uniformly throughout space, out to the furthest distances. 
A) clustered together in several high-density centers, with very little matter between them. 
B) concentrated on the surfaces of huge open spaces or voids, like soap bubbles. 
C) concentrated around one position in space, presumably the original site of the Big Bang. 
D) distributed uniformly throughout space, out to the furthest distances.

Question 2

Suppose an astronomer discovers a distant quasar whose recessional velocity is 1/3 the speed of light. If the Hubble constant is 73 km/s/Mpc, how far away is the quasar?

Accepted Answer

A) 6,850,000 Mpc 
B) 1370 Mpc 
C) 137 Mpc 
D) 68 Mpc 
A) 6,850,000 Mpc 
B) 1370 Mpc 
C) 137 Mpc 
D) 68 Mpc

Question 3

The Hubble classification for a galaxy with a circular outline and a smooth distribution of brightness is:

Accepted Answer

A) Sa. 
B) Sc. 
C) E7. 
D) E0. 
A) Sa. 
B) Sc. 
C) E7. 
D) E0.

Question 4

A starburst galaxy is characterized by a particularly large number of:

Accepted Answer

A) Population I stars. 
B) Population II stars. 
C) red giants. 
D) white dwarfs. 
A) Population I stars. 
B) Population II stars. 
C) red giants. 
D) white dwarfs.

Question 5

How many barred spirals are there compared to ordinary spirals?

Accepted Answer

A) There are about one-half as many barred spirals as ordinary spirals. 
B) There are about 6 times as many barred spirals as ordinary spirals. 
C) There are about twice as many barred spirals as ordinary spirals. 
D) There are about one-tenth as many barred spirals as ordinary spirals. 
A) There are about one-half as many barred spirals as ordinary spirals. 
B) There are about 6 times as many barred spirals as ordinary spirals. 
C) There are about twice as many barred spirals as ordinary spirals. 
D) There are about one-tenth as many barred spirals as ordinary spirals.

The overall distribution of galaxies through space is now found to be galaxies:

Suppose an astronomer discovers a distant quasar whose recessional velocity is 1/3 the speed of light. If the Hubble constant is 73 km/s/Mpc, how far away is the quasar?

The Hubble classification for a galaxy with a circular outline and a smooth distribution of brightness is:

A starburst galaxy is characterized by a particularly large number of:

How many barred spirals are there compared to ordinary spirals?

Astronomy and the Universe

Knowing the Heavens

Eclipses and the Motion of the Moon

Gravitation and the Waltz of the Planets

The Nature of Light

Optics and Telescopes

Comparative Planetology I: Our Solar System

Comparative Planetology II: the Origin of Our Solar System

The Living Earth

Our Barren Moon

Mercury, Venus, and Mars: Terrestrial, yet Unique

Jupiter and Saturn: Lords of the Planets

Jupiter and Saturns Satellites of Fire and Ice

Uranus, Neptune, Pluto, and the Kuiper Belt: Remote Worlds

Asteroids, Comets, and Impacts

Our Star, the Sun

The Nature of the Stars

The Birth of Stars

Stellar Evolution: on and After the Main Sequence

Stellar Evolution: The Death of Stars

Stellar Remnants: Neutron Stars and Black Holes

Our Galaxy

Quasars and Active Galaxies

Cosmology: The Origin and Evolution of the Universe

Exploring the Early Universe

The Search for Extraterrestrial Life

Filters

Exam 23: Galaxies

The overall distribution of galaxies through space is now found to be galaxies:

Suppose an astronomer discovers a distant quasar whose recessional velocity is 1/3 the speed of light. If the Hubble constant is 73 km/s/Mpc, how far away is the quasar?

The Hubble classification for a galaxy with a circular outline and a smooth distribution of brightness is:

A starburst galaxy is characterized by a particularly large number of:

How many barred spirals are there compared to ordinary spirals?

Astronomy and the Universe

Knowing the Heavens

Eclipses and the Motion of the Moon

Gravitation and the Waltz of the Planets

The Nature of Light

Optics and Telescopes

Comparative Planetology I: Our Solar System

Comparative Planetology II: the Origin of Our Solar System

The Living Earth

Our Barren Moon

Mercury, Venus, and Mars: Terrestrial, yet Unique

Jupiter and Saturn: Lords of the Planets

Jupiter and Saturns Satellites of Fire and Ice

Uranus, Neptune, Pluto, and the Kuiper Belt: Remote Worlds

Asteroids, Comets, and Impacts

Our Star, the Sun

The Nature of the Stars

The Birth of Stars

Stellar Evolution: on and After the Main Sequence

Stellar Evolution: The Death of Stars

Stellar Remnants: Neutron Stars and Black Holes

Our Galaxy

Quasars and Active Galaxies

Cosmology: The Origin and Evolution of the Universe

Exploring the Early Universe

The Search for Extraterrestrial Life

Filters