Question 1

Our calendar divides the year into 30-day periods in recognition of the synodic cycle of the Moon.

Accepted Answer

A) True 
 B)False

Question 2

The geometry of a solar eclipse is the same as that of a lunar eclipse.

Accepted Answer

A) True 
 B)False

Question 3

When the Moon is totally eclipsed, the Moon is illuminated by some sunlight reflected by Earth's atmosphere.

Accepted Answer

A) True 
 B)False

Question 4

What unit would best describe the linear diameter of a planetary body?

Accepted Answer

A)   arc seconds
B)   arc minutes
C)   degrees
D)   kilometers
E)   radians

Question 5

A(n) _______________ is the changing phase the week between first quarter and full moon.

Accepted Answer

The answer of A(n) _______________ is the changing phase the...

Question 6

Because the _______________ of the Moon and the Sun vary slightly, the disk of the Moon is sometimes too small to cover the disk of the Sun.

Accepted Answer

angular diameter

Question 7

The ____ of the Moon and Sun vary slightly because the orbits of the Moon and Earth are slightly elliptical.

Accepted Answer

A)   angular distance
B)   linear diameter
C)   linear distance
D)   angular diameter
E)   angular momentum

Question 8

Since the Moon is about 0.5 degrees in angular diameter, about how far does it move in 24 hours across the background of the constellations?

Accepted Answer

A)   0.5 degrees
B)   1.0 degree
C)   2 degrees
D)   9 degrees
E)   13 degrees

Question 9

The angular diameters of the Moon and Sun vary slightly because the orbits of the Moon and Earth are slightly elliptical.

Accepted Answer

A) True 
 B)False

Question 10

What does a waxing gibbous moon mean?

Accepted Answer

A)   The changing Moon between full moon and third quarter
B)   The changing Moon between third quarter and new moon
C)   The changing Moon between first quarter and full moon
D)   The changing Moon between new moon and first quarter
E)   The changing Moon between first and third quarters

Question 11

What happens every 29.5 days?

Accepted Answer

A)   The Moon's Saros cycle
B)   The Moon's synodic cycle
C)   The Moon's sidereal cycle
D)   The Moon's ecliptic season
E)   The Moon's chance for a partial eclipse

Question 12

If the Moon is too far from Earth during a solar eclipse, the _____ does not reach Earth's surface.

Accepted Answer

A)   umbra
B)   ecliptic
C)   prominence
D)   penumbra
E)   solar disk

Question 13

If the Moon passes only partially into the umbra, we witness a(n) _______________.

Accepted Answer

partial lu...

Question 14

What creates a total lunar eclipse?

Accepted Answer

A)   The Sun passes completely through Earth's umbra.
B)   The Moon passes completely through Earth's umbra.
C)   The Moon passes through some of Earth's penumbra.
D)   The Earth passes completely through the Moon's umbra.
E)   The Earth passes through some of the Moon's penumbra.

Question 15

What is a new moon?

Accepted Answer

A)   The lunar phase in which the first quarter Moon approaches full moon
B)   The lunar phase in which Earth's shadow is cast on the Moon
C)   The lunar phase in which the Moon's shadow is cast on Earth
D)   The lunar phase in which sunlight illuminates only the far side of the Moon
E)   The lunar phase in which sunlight illuminates the Earth facing side of the Moon

Question 16

What are the two parts of a shadow during an eclipse?

Accepted Answer

A)   total and partial
B)   apogee and perigee
C)   sidereal and synodic
D)   waxing and waning
E)   umbra and penumbra

Question 17

What produces the lunar phases?

Accepted Answer

A)   The rotation of the Moon
B)   The revolution of the Moon
C)   The changing direction of sunlight
D)   Earth's tilted axis relative to the Moon
E)   The changing direction of Earth to the Moon

Question 18

The sidereal period is _______________ days long, the time it takes the Moon to circle the sky once and return to the same position relative to the stars.

Accepted Answer

27.3

Question 19

The chromosphere is often marked by eruptions on the solar surface called ____.

Accepted Answer

A)   solar flares
B)   prominences
C)   solar nodes
D)   diamond rings
E)   coronal mass ejections

Question 20

Due to the high temperatures of the gas, what color do prominences appear as during a solar eclipse?

Accepted Answer

A)   copper
B)   blue
C)   pink
D)   violet
E)   teal C

Exam 3: Moon Phases and Eclipses

Our calendar divides the year into 30-day periods in recognition of the synodic cycle of the Moon.

Correct AnswerverifiedShow Answer

The geometry of a solar eclipse is the same as that of a lunar eclipse.

Correct AnswerverifiedShow Answer

When the Moon is totally eclipsed, the Moon is illuminated by some sunlight reflected by Earth's atmosphere.

Correct AnswerverifiedShow Answer

What unit would best describe the linear diameter of a planetary body?

Correct AnswerverifiedShow Answer

A(n) _______________ is the changing phase the week between first quarter and full moon.

Correct AnswerverifiedShow Answer

Because the _______________ of the Moon and the Sun vary slightly, the disk of the Moon is sometimes too small to cover the disk of the Sun.

Correct Answerverifiedangular diameter

The ____ of the Moon and Sun vary slightly because the orbits of the Moon and Earth are slightly elliptical.

Correct AnswerverifiedShow Answer

Since the Moon is about 0.5 degrees in angular diameter, about how far does it move in 24 hours across the background of the constellations?

Correct AnswerverifiedShow Answer

The angular diameters of the Moon and Sun vary slightly because the orbits of the Moon and Earth are slightly elliptical.

Correct AnswerverifiedShow Answer

What does a waxing gibbous moon mean?

Correct AnswerverifiedShow Answer

What happens every 29.5 days?

Correct AnswerverifiedShow Answer

If the Moon is too far from Earth during a solar eclipse, the _____ does not reach Earth's surface.

Correct AnswerverifiedShow Answer

If the Moon passes only partially into the umbra, we witness a(n) _______________.

Correct Answerverifiedpartial lu...View AnswerShow Answer

What creates a total lunar eclipse?

Correct AnswerverifiedShow Answer

What is a new moon?

Correct AnswerverifiedShow Answer

What are the two parts of a shadow during an eclipse?

Correct AnswerverifiedShow Answer

What produces the lunar phases?

Correct AnswerverifiedShow Answer

The sidereal period is _______________ days long, the time it takes the Moon to circle the sky once and return to the same position relative to the stars.

Correct Answerverified27.3

The chromosphere is often marked by eruptions on the solar surface called ____.

Correct AnswerverifiedShow Answer

Due to the high temperatures of the gas, what color do prominences appear as during a solar eclipse?

Correct AnswerverifiedC

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angular diameter

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partial lu...
View Answer

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27.3

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C