Question 1

Cosmology is the study of the structure, history, and evolution of the observable Universe.

Accepted Answer

A) True 
 B)False

Question 2

The inflationary theory of the Universe may explain why the background radiation is so isotropic.

Accepted Answer

A) True 
 B)False

Question 3

Deuterium and lithium-7 are part of the 4.5% normal matter.

Accepted Answer

A) True 
 B)False

Question 4

Which of the following agrees with a no-center, no-edge Universe

Accepted Answer

A) a flat geometry 
B) a positive-curved geometry 
C) a negative-curved geometry 
D) All of the other choices are correct. 
A) a flat geometry 
B) a positive-curved geometry 
C) a negative-curved geometry 
D) All of the other choices are correct.

Question 5

Astronomers believe that the hydrogen atoms in your body were created

Accepted Answer

A) in the planets. 
B) inside the stars. 
C) in the Sun. 
D) in the big bang. 
E) in neutron stars. 
A) in the planets. 
B) inside the stars. 
C) in the Sun. 
D) in the big bang. 
E) in neutron stars.

Question 6

By adding the cosmological constant, Einstein made the universe steady in that the Universe neither expanded nor contracted.

Accepted Answer

A) True 
 B)False

Question 7

"Seeds" around which galaxies, clusters and walls grew may have been ___________ before inflation and recombination.

Accepted Answer

A) caused by hot dark matter 
B) caused by baryons 
C) the result of the separation of the electromagnetic and weak forces 
D) the result of freezing water molecules shortly after the Universe became transparent to photons 
E) caused by initially tiny quantum mechanical fluctuations in space-time 
A) caused by hot dark matter 
B) caused by baryons 
C) the result of the separation of the electromagnetic and weak forces 
D) the result of freezing water molecules shortly after the Universe became transparent to photons 
E) caused by initially tiny quantum mechanical fluctuations in space-time

Question 8

Large scale structures of the Universe include ___________.

Accepted Answer

A) filaments 
B) voids 
C) walls 
D) All of the other choices are correct. 
A) filaments 
B) voids 
C) walls 
D) All of the other choices are correct.

Question 9

You live in a Universe where matter dominates significantly over antimatter.

Accepted Answer

A) True 
 B)False

Question 10

In the first second of the universe, the universe cooled and inflated. A result is a separation of one unified force into four distinct forces.

Accepted Answer

A) True 
 B)False

Question 11

The cosmic background radiation comes from a time

Accepted Answer

A) when protons and neutrons were first formed. 
B) when the big bang first began to expand. 
C) during the inflationary period. 
D) when gamma rays had enough energy to destroy nuclei. 
E) when electrons began to recombine with nuclei to form atoms. 
A) when protons and neutrons were first formed. 
B) when the big bang first began to expand. 
C) during the inflationary period. 
D) when gamma rays had enough energy to destroy nuclei. 
E) when electrons began to recombine with nuclei to form atoms.

Question 12

The cosmic microwave background radiation was released shortly after the formation of the first stars.

Accepted Answer

A) True 
 B)False

Question 13

If the density of the universe equals the critical density, then the Universe must be ___________ (i.e., having zero curvature).

Accepted Answer

The answer of If the density of the universe equals...

Question 14

Since the big bang, but before now, a time existed where matter was not dominant.

Accepted Answer

A) True 
 B)False

Question 15

Prior to 10-36 seconds, the Universe existed as one unified force.

Accepted Answer

A) True 
 B)False

Question 16

The flatness problem and horizon problem

Accepted Answer

A) are solved if there was a sudden inflation of the Universe at time before recombination occurred. 
B) show that the Universe can be described as static and unchanging. 
C) show that dark matter must be a small fraction of the total mass of the Universe. 
D) imply that the Universe was once much colder than it is now. 
E) imply that the inflationary theory is incorrect. 
A) are solved if there was a sudden inflation of the Universe at time before recombination occurred. 
B) show that the Universe can be described as static and unchanging. 
C) show that dark matter must be a small fraction of the total mass of the Universe. 
D) imply that the Universe was once much colder than it is now. 
E) imply that the inflationary theory is incorrect.

Question 17

What observational evidence supports the fact that our universe is static and unchanging

Accepted Answer

A) detection of the cosmic microwave background (CM
B)  
B) dark sky at night 
C) redshift of galaxies 
D) evolution of galaxies with distance 
E) None of the other choices are correct. 
A) detection of the cosmic microwave background (CM
B)  
B) dark sky at night 
C) redshift of galaxies 
D) evolution of galaxies with distance 
E) None of the other choices are correct.

Question 18

What do the size and distribution of small scale temperature variations suggest about the geometry of the Universe

Accepted Answer

Theory predicts that most of the irregul

Question 19

As shown in the following graph, neither radiation nor matter dominated for __________.

Accepted Answer

A) ˜104 years 
B) ˜105 years 
C) ˜106 years 
D) ˜1 second 
A) ˜104 years 
B) ˜105 years 
C) ˜106 years 
D) ˜1 second

Question 20

Which event occurred at a redshift around 1100

Accepted Answer

A) big bang 
B) inflation 
C) CMB 
D) first stars formed 
A) big bang 
B) inflation 
C) CMB 
D) first stars formed

Cosmology is the study of the structure, history, and evolution of the observable Universe.

The inflationary theory of the Universe may explain why the background radiation is so isotropic.

Deuterium and lithium-7 are part of the 4.5% normal matter.

Which of the following agrees with a no-center, no-edge Universe

Astronomers believe that the hydrogen atoms in your body were created

By adding the cosmological constant, Einstein made the universe steady in that the Universe neither expanded nor contracted.

"Seeds" around which galaxies, clusters and walls grew may have been ___________ before inflation and recombination.

Large scale structures of the Universe include ___________.

You live in a Universe where matter dominates significantly over antimatter.

In the first second of the universe, the universe cooled and inflated. A result is a separation of one unified force into four distinct forces.

The cosmic background radiation comes from a time

The cosmic microwave background radiation was released shortly after the formation of the first stars.

If the density of the universe equals the critical density, then the Universe must be ___________ (i.e., having zero curvature).

Since the big bang, but before now, a time existed where matter was not dominant.

Prior to 10-36 seconds, the Universe existed as one unified force.

The flatness problem and horizon problem

What observational evidence supports the fact that our universe is static and unchanging

What do the size and distribution of small scale temperature variations suggest about the geometry of the Universe

As shown in the following graph, neither radiation nor matter dominated for __________.

Which event occurred at a redshift around 1100

Here and Now

A Users Guide to the Sky

Cycles of the Sun and Moon

The Origin of Modern Astronomy

Light and Telescopes

Atoms and Spectra

The Sun

The Family of Stars

The Formation and Structure of Stars

The Deaths of Stars

Neutron Stars and Black Holes

The Milky Way Galaxy

Galaxies: Normal and Active

The Origin of the Solar System

Earth and Moon: Bases for Comparative Planetology

Mercury, Venus, and Mars

The Outer Solar System

Meteorites, Asteroids, and Comets

Astrobiology: Life on Other Worlds

Filters

Exam 14: Modern Cosmology

Cosmology is the study of the structure, history, and evolution of the observable Universe.

The inflationary theory of the Universe may explain why the background radiation is so isotropic.

Deuterium and lithium-7 are part of the 4.5% normal matter.

Which of the following agrees with a no-center, no-edge Universe

Astronomers believe that the hydrogen atoms in your body were created

By adding the cosmological constant, Einstein made the universe steady in that the Universe neither expanded nor contracted.

"Seeds" around which galaxies, clusters and walls grew may have been ___________ before inflation and recombination.

Large scale structures of the Universe include ___________.

You live in a Universe where matter dominates significantly over antimatter.

In the first second of the universe, the universe cooled and inflated. A result is a separation of one unified force into four distinct forces.

The cosmic background radiation comes from a time

The cosmic microwave background radiation was released shortly after the formation of the first stars.

If the density of the universe equals the critical density, then the Universe must be ___________ (i.e., having zero curvature).

Since the big bang, but before now, a time existed where matter was not dominant.

Prior to 10-36 seconds, the Universe existed as one unified force.

The flatness problem and horizon problem

What observational evidence supports the fact that our universe is static and unchanging

What do the size and distribution of small scale temperature variations suggest about the geometry of the Universe

As shown in the following graph, neither radiation nor matter dominated for __________.

Which event occurred at a redshift around 1100

Here and Now

A Users Guide to the Sky

Cycles of the Sun and Moon

The Origin of Modern Astronomy

Light and Telescopes

Atoms and Spectra

The Sun

The Family of Stars

The Formation and Structure of Stars

The Deaths of Stars

Neutron Stars and Black Holes

The Milky Way Galaxy

Galaxies: Normal and Active

The Origin of the Solar System

Earth and Moon: Bases for Comparative Planetology

Mercury, Venus, and Mars

The Outer Solar System

Meteorites, Asteroids, and Comets

Astrobiology: Life on Other Worlds

Filters