Question 1

An observer in the Southern 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

Question 2

The constellation of Orion is currently visible in the evenings in January. Precession will not affect this and Orion will still be visible in January 13,000 years from now.

Accepted Answer

A) True 
 B)False

Question 3

How much of the night sky is north of the celestial equator?

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

Question 4

The apparent visual magnitude of a star is a measure of the star's

Accepted Answer

A)   size.
B)   intensity.
C)   distance.
D)   color.
E)   temperature.

Question 5

A(n)  ____ is 1/60th of a degree.

Accepted Answer

A)   precession
B)   second of arc
C)   minute of arc
D)   nadir
E)   angular diameter

Question 6

A sketch of the Earth with its north and south poles and equator is shown. The zenith is located in the sky over your head if you are at

Accepted Answer

A)   Earth's equator.
B)   Earth's north pole.
C)   Earth's south pole.
D)   any of these.

Question 7

An observer in the Northern Hemisphere watches the sky for several hours. Due to the motion of Earth, this observer notices that the stars near the north celestial pole appear to move

Accepted Answer

A)   counter-clockwise around the celestial pole.
B)   clockwise around the celestial pole.
C)   from left to right.
D)   from right to left.
E)   nearly vertically upward.

Question 8

An observer in the Southern 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

Question 9

During one day and night in the mid-northern hemisphere, the stars near the north celestial pole

Accepted Answer

A)   rise in the east.
B)   set in the west.
C)   circle the north celestial pole counter-clockwise.
D)   circle the north celestial pole clockwise.

Question 10

Stars in the same constellation

Accepted Answer

A)   probably formed at the same time.
B)   must be part of the same cluster of stars in space.
C)   must have been discovered at about the same time at the same location in space.
D)   may actually be very different distances away from the observer and from each other.

Question 11

An observer on Earth's equator would find

Accepted Answer

A)   Polaris directly overhead.
B)   Polaris 40° above the northern horizon.
C)   Polaris on the northern horizon.
D)   that the celestial equator passing directly overhead.
E)   that the ecliptic coincides with the horizon.

Question 12

Seen from the northern latitudes, 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.

Question 13

A 3rd magnitude star is 3 times brighter than a 1st magnitude star.

Accepted Answer

A) True 
 B)False

Question 14

____________________ is a measure of the light energy that hits one square meter in one second.

Accepted Answer

The answer of ____________________ is a measure of the light...

Question 15

If an observer walks north toward increasing latitude, the number of circumpolar stars would

Accepted Answer

A)   remain constant.
B)   decrease.
C)   increase.
D)   Unknown unless you also state the longitude of the observer.

Question 16

The ____________________ is the point on the celestial sphere directly above an observer, regardless of where the observer is located on Earth.

Accepted Answer

The answer of The ____________________ is the point on the...

Question 17

Table 2-1
 
-Refer to Table 2-1. Based on the information in the table, what is the ratio of the intensity of Dra to that of Nim?

Accepted Answer

A)   2.512
B)   5
C)   8.07
D)   11.14
E)   100

Question 18

An observer at Earth's geographic north pole 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 above are true.

Question 19

A second magnitude star in Ursa Major is brighter than a fourth magnitude star in Orion.

Accepted Answer

A) True 
 B)False

Question 20

A(n)  ____ is 1/60th of a minute of arc.

Accepted Answer

A)   precession
B)   second of arc
C)   degree
D)   nadir
E)   angular diameter

Exam 2: A Users Guide to the Sky

A 3rd magnitude star is 3 times brighter than a 1st magnitude star.

Correct AnswerverifiedShow Answer

A(n) ____ is 1/60th of a minute of arc.

Correct AnswerverifiedShow Answer

A sketch of the Earth with its north and south poles and equator is shown. The zenith is located in the sky over your head if you are at

Correct AnswerverifiedShow Answer

If an observer walks north toward increasing latitude, the number of circumpolar stars would

Correct AnswerverifiedShow Answer

The apparent visual magnitude of a star is a measure of the star's

Correct AnswerverifiedShow Answer

How much of the night sky is north of the celestial equator?

Correct AnswerverifiedShow Answer

An observer in the Southern 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?

Correct AnswerverifiedShow Answer

The ____________________ is the point on the celestial sphere directly above an observer, regardless of where the observer is located on Earth.

Correct AnswerverifiedShow Answer

A second magnitude star in Ursa Major is brighter than a fourth magnitude star in Orion.

Correct AnswerverifiedShow Answer

During one day and night in the mid-northern hemisphere, the stars near the north celestial pole

Correct AnswerverifiedShow Answer

____________________ is a measure of the light energy that hits one square meter in one second.

Correct AnswerverifiedShow Answer

An observer at Earth's geographic north pole would find _______

Correct AnswerverifiedShow Answer

Table 2-1 -Refer to Table 2-1. Based on the information in the table, what is the ratio of the intensity of Dra to that of Nim?

Correct AnswerverifiedShow Answer

A(n) ____ is 1/60th of a degree.

Correct AnswerverifiedShow Answer

An observer in the Northern Hemisphere watches the sky for several hours. Due to the motion of Earth, this observer notices that the stars near the north celestial pole appear to move

Correct AnswerverifiedShow Answer

Seen from the northern latitudes, the star Polaris

Correct AnswerverifiedShow Answer

Stars in the same constellation

Correct AnswerverifiedShow Answer

An observer on Earth's equator would find

Correct AnswerverifiedShow Answer

The constellation of Orion is currently visible in the evenings in January. Precession will not affect this and Orion will still be visible in January 13,000 years from now.

Correct AnswerverifiedShow Answer

An observer in the Southern 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?

Correct AnswerverifiedShow Answer

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