Question 1

Dark matter had no effect on the distribution of matter in the early universe.

Accepted Answer

A) True 
 B)False

Question 2

Ripples in the Cosmic Microwave Background correspond to

Accepted Answer

A)  matter density fluctuations. 
B)  temperature fluctuations. 
C)  energy fluctuations. 
D)  fluctuations in both matter and radiation. 
E)  imperfections in measurement techniques or equipment. 
A)  matter density fluctuations. 
B)  temperature fluctuations. 
C)  energy fluctuations. 
D)  fluctuations in both matter and radiation. 
E)  imperfections in measurement techniques or equipment.

Question 3

The Hubble constant divided into the number one gives a rough estimate for the age of the universe, or the "Hubble Time."

Accepted Answer

A) True 
 B)False

Question 4

Contrast dark matter and dark energy with respect to their roles in the future of the universe.

Accepted Answer

Dark matter exerts a gravitati

Question 5

Why are the temperature fluctuations observed in the cosmic microwave background are important?

Accepted Answer

The angular scale of the fluct

Question 6

The "flatness" problem arises because the curvature of space seems remarkably close to

Accepted Answer

A)  zero curvature, favoring a spherical cosmos. 
B)  exactly one. 
C)  0.5, suggesting we are split between open and closed universes. 
D)  2.73 K, in spite of the eddies and turbulence that led to galaxy formation. 
E)  infinity, suggesting an open universe is the only possible cosmology. 
A)  zero curvature, favoring a spherical cosmos. 
B)  exactly one. 
C)  0.5, suggesting we are split between open and closed universes. 
D)  2.73 K, in spite of the eddies and turbulence that led to galaxy formation. 
E)  infinity, suggesting an open universe is the only possible cosmology.

Question 7

The flatness problem is the fact that the observed density of matter is unexpectedly different from the critical density predicted by the inflationary epoch.

Accepted Answer

A) True 
 B)False

Question 8

The cosmic microwave background is the total of all the radio emissions from all the galaxies and quasars in the universe.

Accepted Answer

A) True 
 B)False

Question 9

Of the normal elements around us, the Big Bang produced

Accepted Answer

A)  none, only energy. 
B)  only hydrogen. 
C)  hydrogen and helium. 
D)  all elements up to iron. 
E)  all elements in much their present proportions. 
A)  none, only energy. 
B)  only hydrogen. 
C)  hydrogen and helium. 
D)  all elements up to iron. 
E)  all elements in much their present proportions.

Question 10

The universal accelerating force could NOT be considered

Accepted Answer

A)  antigravity. 
B)  Einstein's cosmological constant. 
C)  dark energy. 
D)  vacuum pressure. 
E)  dark matter. 
A)  antigravity. 
B)  Einstein's cosmological constant. 
C)  dark energy. 
D)  vacuum pressure. 
E)  dark matter.

Question 11

________ is the concept that all large samples of the universe are alike in appearance anywhere in the universe.

Accepted Answer

The answer of ________ is the concept that all large...

Question 12

Not taking dark energy into account, we seem to live now in a matter dominated universe, since the observed matter density exceeds the observed energy density.

Accepted Answer

A) True 
 B)False

Question 13

Is the Hubble Constant really constant?

Accepted Answer

No, with the influence of dark

Question 14

Before about 4 billion years ago the universe was

Accepted Answer

A)  radiation dominated. 
B)  quark dominated. 
C)  lepton dominated. 
D)  matter dominated. 
E)  dark energy dominated. 
A)  radiation dominated. 
B)  quark dominated. 
C)  lepton dominated. 
D)  matter dominated. 
E)  dark energy dominated.

Question 15

In which of the following models will the universe stop expanding?

Accepted Answer

A)  High Density Universe 
B)  Low Density Universe 
C)  Steady State Universe 
D)  Critical Density Universe 
E)  Euclidean Universe 
A)  High Density Universe 
B)  Low Density Universe 
C)  Steady State Universe 
D)  Critical Density Universe 
E)  Euclidean Universe

Question 16

All of the ________ now observed must be primordial.

Accepted Answer

The answer of All of the ________ now observed must...

Question 17

The presently accepted value of the Hubble constant gives an age of

Accepted Answer

A)  4.5 billion years. 
B)  8-9 billion years. 
C)  14 billion years. 
D)  18 billion years. 
E)  22 billion years. 
A)  4.5 billion years. 
B)  8-9 billion years. 
C)  14 billion years. 
D)  18 billion years. 
E)  22 billion years.

Question 18

What is the cosmic microwave background, and why is it significant?

Accepted Answer

It is a 2.7 K universal blackbody backgr

Question 19

Homogeneity and isotropy, taken as assumptions regarding the structure and evolution of the universe, are known as

Accepted Answer

A)  Obler's Paradox. 
B)  Hubble's Law. 
C)  Wien's Law. 
D)  the Cosmological Principle. 
E)  the Grand Unified Theory. 
A)  Obler's Paradox. 
B)  Hubble's Law. 
C)  Wien's Law. 
D)  the Cosmological Principle. 
E)  the Grand Unified Theory.

Question 20

Recent work with type I supernovae at great distances suggests the universe may in fact be accelerating its expansion, a discovery attributed to a newly found

Accepted Answer

A)  repulsive charge on dark matter. 
B)  polarization and a universal spinning magnetic field. 
C)  dark energy. 
D)  magnetic field associated with antimatter. 
E)  mass determined for the neutrinos. 
A)  repulsive charge on dark matter. 
B)  polarization and a universal spinning magnetic field. 
C)  dark energy. 
D)  magnetic field associated with antimatter. 
E)  mass determined for the neutrinos.

Dark matter had no effect on the distribution of matter in the early universe.

Ripples in the Cosmic Microwave Background correspond to

The Hubble constant divided into the number one gives a rough estimate for the age of the universe, or the "Hubble Time."

Contrast dark matter and dark energy with respect to their roles in the future of the universe.

Why are the temperature fluctuations observed in the cosmic microwave background are important?

The "flatness" problem arises because the curvature of space seems remarkably close to

The flatness problem is the fact that the observed density of matter is unexpectedly different from the critical density predicted by the inflationary epoch.

The cosmic microwave background is the total of all the radio emissions from all the galaxies and quasars in the universe.

Of the normal elements around us, the Big Bang produced

The universal accelerating force could NOT be considered

________ is the concept that all large samples of the universe are alike in appearance anywhere in the universe.

Not taking dark energy into account, we seem to live now in a matter dominated universe, since the observed matter density exceeds the observed energy density.

Is the Hubble Constant really constant?

Before about 4 billion years ago the universe was

In which of the following models will the universe stop expanding?

All of the ________ now observed must be primordial.

The presently accepted value of the Hubble constant gives an age of

What is the cosmic microwave background, and why is it significant?

Homogeneity and isotropy, taken as assumptions regarding the structure and evolution of the universe, are known as

Recent work with type I supernovae at great distances suggests the universe may in fact be accelerating its expansion, a discovery attributed to a newly found

The Night Sky

Light and Telescopes

The Solar System

Earth and Its Moon

The Eight Planets

Small Bodies in the Solar System

Formation of Planetary Systems

The Sun

Measuring the Stars

Star Formation and Evolution

Stellar Explosions

Black Holes

The Milky Way Galaxy

Galaxies

Filters

Exam 15: Cosmology and the Universe

Dark matter had no effect on the distribution of matter in the early universe.

Ripples in the Cosmic Microwave Background correspond to

The Hubble constant divided into the number one gives a rough estimate for the age of the universe, or the "Hubble Time."

Contrast dark matter and dark energy with respect to their roles in the future of the universe.

Why are the temperature fluctuations observed in the cosmic microwave background are important?

The "flatness" problem arises because the curvature of space seems remarkably close to

The flatness problem is the fact that the observed density of matter is unexpectedly different from the critical density predicted by the inflationary epoch.

The cosmic microwave background is the total of all the radio emissions from all the galaxies and quasars in the universe.

Of the normal elements around us, the Big Bang produced

The universal accelerating force could NOT be considered

________ is the concept that all large samples of the universe are alike in appearance anywhere in the universe.

Not taking dark energy into account, we seem to live now in a matter dominated universe, since the observed matter density exceeds the observed energy density.

Is the Hubble Constant really constant?

Before about 4 billion years ago the universe was

In which of the following models will the universe stop expanding?

All of the ________ now observed must be primordial.

The presently accepted value of the Hubble constant gives an age of

What is the cosmic microwave background, and why is it significant?

Homogeneity and isotropy, taken as assumptions regarding the structure and evolution of the universe, are known as

Recent work with type I supernovae at great distances suggests the universe may in fact be accelerating its expansion, a discovery attributed to a newly found

The Night Sky

Light and Telescopes

The Solar System

Earth and Its Moon

The Eight Planets

Small Bodies in the Solar System

Formation of Planetary Systems

The Sun

Measuring the Stars

Star Formation and Evolution

Stellar Explosions

Black Holes

The Milky Way Galaxy

Galaxies

Filters