Question 1

Most of the elements heavier than helium were made during the first few minutes after the big bang.

Accepted Answer

A) True 
 B)False  False

Question 2

The ___________ are theories that unify the electromagnetic, weak, and strong forces at extremely high energies.

Accepted Answer

grand unified theories
GUTs

Question 3

What evidence do we have that the Universe is expanding

Accepted Answer

The answer of What evidence do we have that the...

Question 4

Whether the Universe is open, closed or flat depends, on the ___________ of the Universe.

Accepted Answer

A) luminosity 
B) density 
C) temperature 
D) radius 
E) rotation rate 
A) luminosity 
B) density 
C) temperature 
D) radius 
E) rotation rate

Question 5

Current evidence suggests that the Universe is

Accepted Answer

A) flat, infinite, and neither expanding nor contracting. 
B) closed, finite, and slowing its expansion. 
C) open, infinite, and slowing in its expansion. 
D) static with no expansion. 
E) flat, infinite, and accelerating in its expansion. 
A) flat, infinite, and neither expanding nor contracting. 
B) closed, finite, and slowing its expansion. 
C) open, infinite, and slowing in its expansion. 
D) static with no expansion. 
E) flat, infinite, and accelerating in its expansion.

Question 6

The sum of the baryonic and non-baryonic matter is 27.9% and thus equal to the critical density.

Accepted Answer

A) True 
 B)False

Question 7

Which of the following is a force of nature

Accepted Answer

A) gravity 
B) weak 
C) strong 
D) All of the other choices are correct. 
A) gravity 
B) weak 
C) strong 
D) All of the other choices are correct.

Question 8

-The above cartoon shows the present Universe as it appears from the vantage point of our solar system, which is in the upper left corner of the figure. According to the cosmological principle, how will the view change if we turned around 180 degrees and looked in the other direction How do you know

Accepted Answer

The same v

Question 9

Explain why the principle of homogeneity is an important aspect of the cosmological principle.

Accepted Answer

The fact that the Universe is both isotr

Question 10

in the following observations of the CMB, the mottled (i.e., non-uniform) appearance is due to ___________ in a/an ____________ Universe.

Accepted Answer

A) irregularities, open 
B) hotter temperatures, flat 
C) irregularities, flat 
D) hotter temperatures, open 
A) irregularities, open 
B) hotter temperatures, flat 
C) irregularities, flat 
D) hotter temperatures, open

Question 11

As shown in the following spectra, the higher the redshift, the higher the recessional velocity.

Accepted Answer

A) True 
 B)False

Question 12

The CMB is perfectly uniform.

Accepted Answer

A) True 
 B)False

Question 13

A center or an edge of the Universe would be a special place, contradicting the cosmological principle.

Accepted Answer

A) True 
 B)False

Question 14

Astronomers have found the center of the Universe to be located in

Accepted Answer

A) Earth 
B) the Sun 
C) Sagittarius A 
D) the Virgo Cluster of galaxies 
E) no center is thought to exist. 
A) Earth 
B) the Sun 
C) Sagittarius A 
D) the Virgo Cluster of galaxies 
E) no center is thought to exist.

Question 15

Dark matter makes up 18.7% of the Universe.

Accepted Answer

A) True 
 B)False

Question 16

The elements hydrogen and helium were made during the first few minutes after the big bang.

Accepted Answer

A) True 
 B)False

Question 17

If gravity alone acts to retard the expansion and nothing acts to accelerate it, the Universe is said to be closed if 
I.gravity is strong enough to stop the expansion in a finite time.
II.the density of the Universe is less than the critical density.
III.the Universe is finite.

Accepted Answer

A) I & II 
B) I & III 
C) II & III 
D) I, I, & III 
E) None of the other choices are correct. 
A) I & II 
B) I & III 
C) II & III 
D) I, I, & III 
E) None of the other choices are correct.

Question 18

The ___________ is that the Universe is both isotropic and homogeneous.

Accepted Answer

cosmologic

Question 19

The separation of forces in the grand unified theory occurs after inflation.

Accepted Answer

A) True 
 B)False

Question 20

How old is the Universe since the big bang Pick the best answer according to radioactive dating in the solar system, light travel times to most distant galaxies, time reversal of the big bang, and observations of the 3-K radiation.

Accepted Answer

A) 1400 years 
B) 14,000 years 
C) 14,000,000 years 
D) 14,000,000,000 years 
A) 1400 years 
B) 14,000 years 
C) 14,000,000 years 
D) 14,000,000,000 years

Most of the elements heavier than helium were made during the first few minutes after the big bang.

The ___________ are theories that unify the electromagnetic, weak, and strong forces at extremely high energies.

What evidence do we have that the Universe is expanding

Whether the Universe is open, closed or flat depends, on the ___________ of the Universe.

Current evidence suggests that the Universe is

The sum of the baryonic and non-baryonic matter is 27.9% and thus equal to the critical density.

Which of the following is a force of nature

-The above cartoon shows the present Universe as it appears from the vantage point of our solar system, which is in the upper left corner of the figure. According to the cosmological principle, how will the view change if we turned around 180 degrees and looked in the other direction How do you know

Explain why the principle of homogeneity is an important aspect of the cosmological principle.

in the following observations of the CMB, the mottled (i.e., non-uniform) appearance is due to _ in a/an __ Universe.

As shown in the following spectra, the higher the redshift, the higher the recessional velocity.

The CMB is perfectly uniform.

A center or an edge of the Universe would be a special place, contradicting the cosmological principle.

Astronomers have found the center of the Universe to be located in

Dark matter makes up 18.7% of the Universe.

The elements hydrogen and helium were made during the first few minutes after the big bang.

If gravity alone acts to retard the expansion and nothing acts to accelerate it, the Universe is said to be closed if I.gravity is strong enough to stop the expansion in a finite time. II.the density of the Universe is less than the critical density. III.the Universe is finite.

The ___________ is that the Universe is both isotropic and homogeneous.

The separation of forces in the grand unified theory occurs after inflation.

How old is the Universe since the big bang Pick the best answer according to radioactive dating in the solar system, light travel times to most distant galaxies, time reversal of the big bang, and observations of the 3-K radiation.

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

Most of the elements heavier than helium were made during the first few minutes after the big bang.

The ___________ are theories that unify the electromagnetic, weak, and strong forces at extremely high energies.

What evidence do we have that the Universe is expanding

Whether the Universe is open, closed or flat depends, on the ___________ of the Universe.

Current evidence suggests that the Universe is

The sum of the baryonic and non-baryonic matter is 27.9% and thus equal to the critical density.

Which of the following is a force of nature

Explain why the principle of homogeneity is an important aspect of the cosmological principle.

in the following observations of the CMB, the mottled (i.e., non-uniform) appearance is due to ___________ in a/an ____________ Universe.

As shown in the following spectra, the higher the redshift, the higher the recessional velocity.

The CMB is perfectly uniform.

A center or an edge of the Universe would be a special place, contradicting the cosmological principle.

Astronomers have found the center of the Universe to be located in

Dark matter makes up 18.7% of the Universe.

The elements hydrogen and helium were made during the first few minutes after the big bang.

If gravity alone acts to retard the expansion and nothing acts to accelerate it, the Universe is said to be closed if I.gravity is strong enough to stop the expansion in a finite time. II.the density of the Universe is less than the critical density. III.the Universe is finite.

The ___________ is that the Universe is both isotropic and homogeneous.

The separation of forces in the grand unified theory occurs after inflation.

How old is the Universe since the big bang Pick the best answer according to radioactive dating in the solar system, light travel times to most distant galaxies, time reversal of the big bang, and observations of the 3-K radiation.

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

in the following observations of the CMB, the mottled (i.e., non-uniform) appearance is due to _ in a/an __ Universe.