Question 1

The critical evidence for cosmic acceleration in 1998 came from two teams of astronomers, both observing

Accepted Answer

A)  hypernovae. 
B)  gamma ray bursts. 
C)  type I supernovae. 
D)  type II supernovae. 
E)  ages of globular clusters. 
A)  hypernovae. 
B)  gamma ray bursts. 
C)  type I supernovae. 
D)  type II supernovae. 
E)  ages of globular clusters.

Question 2

The concept that the direction of observation does not matter overall is

Accepted Answer

A)  relativity. 
B)  homogeneity. 
C)  universality. 
D)  isotropy. 
E)  geometry. 
A)  relativity. 
B)  homogeneity. 
C)  universality. 
D)  isotropy. 
E)  geometry.

Question 3

What is the Great Wall?

Accepted Answer

A)  It is a ridge on the Moon near the crater Birt. 
B)  It is the distance beyond which astronomers cannot view any more galaxies or even quasars. 
C)  It is a large sheet of galaxies. 
D)  It is the time before the universe started expanding, about which we can never know anything. 
E)  It is an enormous intergalactic cloud of dust and gas that hides more distant galaxies. 
A)  It is a ridge on the Moon near the crater Birt. 
B)  It is the distance beyond which astronomers cannot view any more galaxies or even quasars. 
C)  It is a large sheet of galaxies. 
D)  It is the time before the universe started expanding, about which we can never know anything. 
E)  It is an enormous intergalactic cloud of dust and gas that hides more distant galaxies.

Question 4

Regular atoms did not show up in the universe until when?

Accepted Answer

A few hundred thousand years a

Question 5

The ________ background radiation in fact far exceeds all the energy radiated by all the stars and galaxies that formed since then.

Accepted Answer

The answer of The ________ background radiation in fact far...

Question 6

While a variety of factors can produce red shifts in the spectrum, the one associated with the expansion of the universe is called

Accepted Answer

A)  universal. 
B)  cosmological. 
C)  olberian. 
D)  relativistic. 
E)  the Zeeman Effect. 
A)  universal. 
B)  cosmological. 
C)  olberian. 
D)  relativistic. 
E)  the Zeeman Effect.

Question 7

Discounting the newly discovered role of dark energy, the universe we live in now is said to be ________ dominated.

Accepted Answer

The answer of Discounting the newly discovered role of dark...

Question 8

Primordial nucleosynthesis refers to the Big Bang making all elements up to iron.

Accepted Answer

A) True 
 B)False

Question 9

The Big Bang was an expansion of matter into empty space.

Accepted Answer

A) True 
 B)False

Question 10

The Big Bang formed

Accepted Answer

A)  only hydrogen. 
B)  only helium. 
C)  hydrogen and helium, but nothing else. 
D)  all elements up to iron. 
E)  all elements found in nature now. 
A)  only hydrogen. 
B)  only helium. 
C)  hydrogen and helium, but nothing else. 
D)  all elements up to iron. 
E)  all elements found in nature now.

Question 11

The first structures in the universe appear to have formed within

Accepted Answer

A)  the newly formed helium. 
B)  the normal matter. 
C)  the electromagnetic radiation. 
D)  the dark matter. 
E)  the dark energy. 
A)  the newly formed helium. 
B)  the normal matter. 
C)  the electromagnetic radiation. 
D)  the dark matter. 
E)  the dark energy.

Question 12

The universe was two minutes old when ________ started to form from deuterium fusion.

Accepted Answer

The answer of The universe was two minutes old when...

Question 13

How does the energy of the cosmic microwave background compare to the energy radiated by all the stars and galaxies that ever existed?

Accepted Answer

A)  They are very close to being equal. 
B)  73% cosmic background, 27% starlight 
C)  About ten times more from the Big Bang than from stars and galaxies 
D)  The starlight now dominates the background, as your eyes show clearly. 
E)  We have no way of comparing matter and energy this way. 
A)  They are very close to being equal. 
B)  73% cosmic background, 27% starlight 
C)  About ten times more from the Big Bang than from stars and galaxies 
D)  The starlight now dominates the background, as your eyes show clearly. 
E)  We have no way of comparing matter and energy this way.

Question 14

The ________ is the observational evidence that the whole universe was once extremely hot and dense, as called for in the Big Bang, but has now expanded and redshifted this energy to much longer wavelengths.

Accepted Answer

microwave

Question 15

Before about 50,000 years after the Big Bang 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 16

The huge, dark, almost spherical regions between the superclusters of galaxies are called ________.

Accepted Answer

The answer of The huge, dark, almost spherical regions between...

Question 17

The discovery of the cosmic microwave background was important because

Accepted Answer

A)  it established a firm center of the Universe. 
B)  it was experimental verification of a prediction from the Big Bang theory. 
C)  it proved that astronomy at radio wavelengths was possible. 
D)  its detection was a major advance in microwave testing. 
E)  it showed the universe must be closed, with more than the critical density here. 
A)  it established a firm center of the Universe. 
B)  it was experimental verification of a prediction from the Big Bang theory. 
C)  it proved that astronomy at radio wavelengths was possible. 
D)  its detection was a major advance in microwave testing. 
E)  it showed the universe must be closed, with more than the critical density here.

Question 18

How does dark energy affect the expansion of the Universe?

Accepted Answer

Dark energy is accelerating th

Question 19

What temperature has the Big Bang has cooled to by now?

Accepted Answer

A)  About 3,000 K 
B)  5,800 K 
C)  About 300 K 
D)  Just over 2.7K 
E)  1.4 K 
A)  About 3,000 K 
B)  5,800 K 
C)  About 300 K 
D)  Just over 2.7K 
E)  1.4 K

Question 20

An infinite universe is one of the assumptions of the cosmological principle.

Accepted Answer

A) True 
 B)False

The critical evidence for cosmic acceleration in 1998 came from two teams of astronomers, both observing

The concept that the direction of observation does not matter overall is

What is the Great Wall?

Regular atoms did not show up in the universe until when?

The ________ background radiation in fact far exceeds all the energy radiated by all the stars and galaxies that formed since then.

While a variety of factors can produce red shifts in the spectrum, the one associated with the expansion of the universe is called

Discounting the newly discovered role of dark energy, the universe we live in now is said to be ________ dominated.

Primordial nucleosynthesis refers to the Big Bang making all elements up to iron.

The Big Bang was an expansion of matter into empty space.

The Big Bang formed

The first structures in the universe appear to have formed within

The universe was two minutes old when ________ started to form from deuterium fusion.

How does the energy of the cosmic microwave background compare to the energy radiated by all the stars and galaxies that ever existed?

The ________ is the observational evidence that the whole universe was once extremely hot and dense, as called for in the Big Bang, but has now expanded and redshifted this energy to much longer wavelengths.

Before about 50,000 years after the Big Bang the universe was

The huge, dark, almost spherical regions between the superclusters of galaxies are called ________.

The discovery of the cosmic microwave background was important because

How does dark energy affect the expansion of the Universe?

What temperature has the Big Bang has cooled to by now?

An infinite universe is one of the assumptions of the cosmological principle.

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

The critical evidence for cosmic acceleration in 1998 came from two teams of astronomers, both observing

The concept that the direction of observation does not matter overall is

What is the Great Wall?

Regular atoms did not show up in the universe until when?

The ________ background radiation in fact far exceeds all the energy radiated by all the stars and galaxies that formed since then.

While a variety of factors can produce red shifts in the spectrum, the one associated with the expansion of the universe is called

Discounting the newly discovered role of dark energy, the universe we live in now is said to be ________ dominated.

Primordial nucleosynthesis refers to the Big Bang making all elements up to iron.

The Big Bang was an expansion of matter into empty space.

The Big Bang formed

The first structures in the universe appear to have formed within

The universe was two minutes old when ________ started to form from deuterium fusion.

How does the energy of the cosmic microwave background compare to the energy radiated by all the stars and galaxies that ever existed?

The ________ is the observational evidence that the whole universe was once extremely hot and dense, as called for in the Big Bang, but has now expanded and redshifted this energy to much longer wavelengths.

Before about 50,000 years after the Big Bang the universe was

The huge, dark, almost spherical regions between the superclusters of galaxies are called ________.

The discovery of the cosmic microwave background was important because

How does dark energy affect the expansion of the Universe?

What temperature has the Big Bang has cooled to by now?

An infinite universe is one of the assumptions of the cosmological principle.

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