Question 1

In 21,200 years from now, Thuban will once again be our north celestial pole.

Accepted Answer

A) True 
 B)False

Question 2

How much of the Earth's surface is experiencing night at any time?

Accepted Answer

A)  less than one-half, because of the tilt of the equator to the ecliptic plane 
B)  more than one-half, because of the precession of the poles 
C)  exactly one-half 
D)  all of the night sky 
A)  less than one-half, because of the tilt of the equator to the ecliptic plane 
B)  more than one-half, because of the precession of the poles 
C)  exactly one-half 
D)  all of the night sky

Question 3

Seen from the northern latitudes (mid-northern hemisphere), the star Polaris

Accepted Answer

A)  is never above the horizon during the day. 
B)  always sets directly in the west. 
C)  is always above the northern horizon. 
D)  is never visible during the winter. 
E)  is the brightest star in the sky. 
A)  is never above the horizon during the day. 
B)  always sets directly in the west. 
C)  is always above the northern horizon. 
D)  is never visible during the winter. 
E)  is the brightest star in the sky.

Question 4

Which can be seen by the naked eye?

Accepted Answer

A)  m v = +10 
B)  m v = +18 
C)  m v = +6 
D)  m v = +8 
A)  m v = +10 
B)  m v = +18 
C)  m v = +6 
D)  m v = +8

Question 5

At the Earth's north pole, the north celestial pole is directly overhead and stars near the horizon travel in straight lines

Accepted Answer

A)  straight up from the horizon. 
B)  straight up from the horizon slanting toward the right. 
C)  straight up from the horizon slanting toward the left. 
D)  parallel to the horizon. 
A)  straight up from the horizon. 
B)  straight up from the horizon slanting toward the right. 
C)  straight up from the horizon slanting toward the left. 
D)  parallel to the horizon.

Question 6

In the picture shown, the lines are called __________________.

Accepted Answer

The answer of   
In the picture shown, the...

Question 7

An observer in the Northern Hemisphere takes a time exposure photograph of the night sky. If the illustration below depicts the photograph taken by the observer, which direction was the camera pointing?

Accepted Answer

A)  straight north 
B)  straight east 
C)  straight south 
D)  straight west 
E)  straight up, directly overhead 
A)  straight north 
B)  straight east 
C)  straight south 
D)  straight west 
E)  straight up, directly overhead

Question 8

Describe the location of Polaris in the sky relative to the horizon as seen by observers in Alaska (lat. = 60° N), Texas (lat. = 33° N), Ecuador (lat. = 0°), and Australia (lat. = 30° S).

Accepted Answer

The further away from the north pole you

Question 9

Which of the following statements correctly describes the relationship between stars and constellations?

Accepted Answer

A)  Only stars close to the ecliptic (the Earth's orbital plane) are located in constellations. 
B)  Every star is located in a constellation. 
C)  Only the brighter stars are in constellations. 
D)  Only those stars that were visible to the ancient Greeks are located in constellations. 
A)  Only stars close to the ecliptic (the Earth's orbital plane) are located in constellations. 
B)  Every star is located in a constellation. 
C)  Only the brighter stars are in constellations. 
D)  Only those stars that were visible to the ancient Greeks are located in constellations.

Question 10

The approximate intensity ratio between two stars is 100. Thus the apparent visual magnitude difference between the stars is ______________.

Accepted Answer

A)  1 
B)  5 
C)  10 
D)  100 
A)  1 
B)  5 
C)  10 
D)  100

Question 11

Less formally defined groupings of stars are called __________________.

Accepted Answer

The answer of Less formally defined groupings of stars are...

Question 12

The light from Polaris is 24.2 times less intense than the light received from Sirius. Which star is the truly brighter star, that is, emitting more visual light at its surface?

Accepted Answer

A)  Polaris 
B)  Sirius 
C)  Neither, they emit the same amount at their surfaces. 
D)  This cannot be determined based upon the information given. 
A)  Polaris 
B)  Sirius 
C)  Neither, they emit the same amount at their surfaces. 
D)  This cannot be determined based upon the information given.

Question 13

The celestial equator always passes directly overhead.

Accepted Answer

A) True 
 B)False

Question 14

An observer's nadir is

Accepted Answer

A)  the point directly opposite the observer's zenith. 
B)  the north point on the observer's horizon. 
C)  located at the center of Earth. 
D)  always located near a circumpolar constellation. 
E)  directly opposite the north celestial pole. 
A)  the point directly opposite the observer's zenith. 
B)  the north point on the observer's horizon. 
C)  located at the center of Earth. 
D)  always located near a circumpolar constellation. 
E)  directly opposite the north celestial pole.

Question 15

The subscript ______ stands for ________ to remind you that only information on visible light is given.

Accepted Answer

The answer of The subscript ______ stands for ________ to...

Question 16

An observer on Earth's equator would find _______

Accepted Answer

A)  the celestial equator passing at 45 degrees above the northern horizon. 
B)  the celestial equator passing at 45 degrees above the southern horizon. 
C)  that the celestial equator coincides with the horizon. 
D)  the celestial equator passing directly overhead. 
E)  None of the other choices are true. 
A)  the celestial equator passing at 45 degrees above the northern horizon. 
B)  the celestial equator passing at 45 degrees above the southern horizon. 
C)  that the celestial equator coincides with the horizon. 
D)  the celestial equator passing directly overhead. 
E)  None of the other choices are true.

Question 17

Describe the path that a star on the celestial equator follows from the time it rises until it sets for a person at a latitude of 60° N and a person at the equator.

Accepted Answer

A star on the celestial equato

Question 18

What is the approximate latitude of the observer in the diagram below if they are located in the hemisphere containing the south celestial pole?
​  
​

Accepted Answer

A)  20° N 
B)  20° S 
C)  70° N 
D)  70° S 
E)  0° 
A)  20° N 
B)  20° S 
C)  70° N 
D)  70° S 
E)  0°

Question 19

Precession of the rotation axis of Earth takes ____ to complete a cycle.

Accepted Answer

A)  24 hours 
B)  one year 
C)  260 years 
D)  26,000 years 
E)  260,000 years 
A)  24 hours 
B)  one year 
C)  260 years 
D)  26,000 years 
E)  260,000 years

Question 20

____ is the brightest star in the constellation of Ursa Majoris.

Accepted Answer

A)  β Ursa Majoris 
B)  γ Ursa Majoris 
C)  α Ursa Majoris 
D)  Wrong! Ursa Majoris is the name of the brightest star. 
A)  β Ursa Majoris 
B)  γ Ursa Majoris 
C)  α Ursa Majoris 
D)  Wrong! Ursa Majoris is the name of the brightest star.

In 21,200 years from now, Thuban will once again be our north celestial pole.

How much of the Earth's surface is experiencing night at any time?

Seen from the northern latitudes (mid-northern hemisphere), the star Polaris

Which can be seen by the naked eye?

At the Earth's north pole, the north celestial pole is directly overhead and stars near the horizon travel in straight lines

In the picture shown, the lines are called __________________.

An observer in the Northern Hemisphere takes a time exposure photograph of the night sky. If the illustration below depicts the photograph taken by the observer, which direction was the camera pointing?

Describe the location of Polaris in the sky relative to the horizon as seen by observers in Alaska (lat. = 60° N), Texas (lat. = 33° N), Ecuador (lat. = 0°), and Australia (lat. = 30° S).

Which of the following statements correctly describes the relationship between stars and constellations?

The approximate intensity ratio between two stars is 100. Thus the apparent visual magnitude difference between the stars is ______________.

Less formally defined groupings of stars are called __________________.

The light from Polaris is 24.2 times less intense than the light received from Sirius. Which star is the truly brighter star, that is, emitting more visual light at its surface?

The celestial equator always passes directly overhead.

An observer's nadir is

The subscript stands for __ to remind you that only information on visible light is given.

An observer on Earth's equator would find _______

Describe the path that a star on the celestial equator follows from the time it rises until it sets for a person at a latitude of 60° N and a person at the equator.

What is the approximate latitude of the observer in the diagram below if they are located in the hemisphere containing the south celestial pole?

Precession of the rotation axis of Earth takes ____ to complete a cycle.

____ is the brightest star in the constellation of Ursa Majoris.

Here and Now

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

Modern Cosmology

Origin of the Solar System and Extrasolar Planets

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 2: A Users Guide to the Sky

In 21,200 years from now, Thuban will once again be our north celestial pole.

How much of the Earth's surface is experiencing night at any time?

Seen from the northern latitudes (mid-northern hemisphere), the star Polaris

Which can be seen by the naked eye?

At the Earth's north pole, the north celestial pole is directly overhead and stars near the horizon travel in straight lines

In the picture shown, the lines are called __________________.

An observer in the Northern Hemisphere takes a time exposure photograph of the night sky. If the illustration below depicts the photograph taken by the observer, which direction was the camera pointing?

Describe the location of Polaris in the sky relative to the horizon as seen by observers in Alaska (lat. = 60° N), Texas (lat. = 33° N), Ecuador (lat. = 0°), and Australia (lat. = 30° S).

Which of the following statements correctly describes the relationship between stars and constellations?

The approximate intensity ratio between two stars is 100. Thus the apparent visual magnitude difference between the stars is ______________.

Less formally defined groupings of stars are called __________________.

The light from Polaris is 24.2 times less intense than the light received from Sirius. Which star is the truly brighter star, that is, emitting more visual light at its surface?

The celestial equator always passes directly overhead.

An observer's nadir is

The subscript ______ stands for ________ to remind you that only information on visible light is given.

An observer on Earth's equator would find _______

Describe the path that a star on the celestial equator follows from the time it rises until it sets for a person at a latitude of 60° N and a person at the equator.

What is the approximate latitude of the observer in the diagram below if they are located in the hemisphere containing the south celestial pole? ​ ​

Precession of the rotation axis of Earth takes ____ to complete a cycle.

____ is the brightest star in the constellation of Ursa Majoris.

Here and Now

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

Modern Cosmology

Origin of the Solar System and Extrasolar Planets

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

The subscript stands for __ to remind you that only information on visible light is given.

What is the approximate latitude of the observer in the diagram below if they are located in the hemisphere containing the south celestial pole?