Question 1

Which of the following has NOT happened during the evolution of the galaxy?

Accepted Answer

A) The abundance of heavy elements has increased 
B) The thickness of the galaxy has decreased. 
C) The galaxy has rotated many times 
D) The number of stars has dropped steadily 
A) The abundance of heavy elements has increased 
B) The thickness of the galaxy has decreased. 
C) The galaxy has rotated many times 
D) The number of stars has dropped steadily

Question 2

What evidence do we have that there is a massive black hole at the center of the Milky Way?

Accepted Answer

A) There is rapidly rotating gas very close to the center 
B) It is very dark there 
C) Interstellar dust is being pulled into the central region of the Milky Way 
D) The density of stars increases as distance from the center decreases 
A) There is rapidly rotating gas very close to the center 
B) It is very dark there 
C) Interstellar dust is being pulled into the central region of the Milky Way 
D) The density of stars increases as distance from the center decreases

Question 3

Which of the following is a true statement about the spiral arms of our galaxy?

Accepted Answer

A) They are made of matter blown outward from the center of the galaxy 
B) Once a star falls into a spiral arm it stays there forever 
C) They are the crests of a density wave 
D) They have not yet completed a single rotation about the galactic center 
A) They are made of matter blown outward from the center of the galaxy 
B) Once a star falls into a spiral arm it stays there forever 
C) They are the crests of a density wave 
D) They have not yet completed a single rotation about the galactic center

Which of the following has NOT happened during the evolution of the galaxy?

What evidence do we have that there is a massive black hole at the center of the Milky Way?

Which of the following is a true statement about the spiral arms of our galaxy?

Journeys Start

Patterns in the Sky

Ancient Astronomy

Renaissance Astronomy

Gravity and Motion

Light and Telescopes

Overview of the Solar System

The Earth

The Moon

Mercury and Venus

Mars

Jupiter and Saturn

The Outer Solar System

Satellites

Small Solar System Bodies

Basic Properties of Stars

The Sun

The Formation of Stars and Planets

The Evolution of Stars

White Dwarfs, neutron Stars, and Black Holes

Binary Star Systems

Galaxies

Quasars and Other Active Galaxies

Galaxy Clusters and the Structure of the Universe

Cosmology

Life in the Universe

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Exam 22: The Milky Way

Which of the following has NOT happened during the evolution of the galaxy?

What evidence do we have that there is a massive black hole at the center of the Milky Way?

Which of the following is a true statement about the spiral arms of our galaxy?

Journeys Start

Patterns in the Sky

Ancient Astronomy

Renaissance Astronomy

Gravity and Motion

Light and Telescopes

Overview of the Solar System

The Earth

The Moon

Mercury and Venus

Mars

Jupiter and Saturn

The Outer Solar System

Satellites

Small Solar System Bodies

Basic Properties of Stars

The Sun

The Formation of Stars and Planets

The Evolution of Stars

White Dwarfs, neutron Stars, and Black Holes

Binary Star Systems

Galaxies

Quasars and Other Active Galaxies

Galaxy Clusters and the Structure of the Universe

Cosmology

Life in the Universe

Filters