Question 1

How many times does the Moon cross the ecliptic each month?

Accepted Answer

A)   none
B)   once
C)   twice
D)   three times
E)   four times

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

A(n) _______________ can occur only at a full Moon if the Moon's path carries it through the shadow of Earth.

Accepted Answer

The answer of A(n) _______________ can occur only at a...

Question 4

Describe all that you would see during a total eclipse of the Sun.

Accepted Answer

During a totally eclipsed Sun, the Moon'...

Question 5

The _______________ formula expresses the relationship of the linear (true) diameter, the angular (apparent) diameter, and the distance, of any object.

Accepted Answer

small-angl...

Question 6

How would you explain to your friend, who knows nothing about astronomy, the way to predict the next eclipse of the Sun?

Accepted Answer

There are two conditions for an eclipse ...

Question 7

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 8

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 9

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

Accepted Answer

partial lu...

Question 10

The safest and simplest way to observe the partial phases of a solar eclipse is to use _______________  projection .

Accepted Answer

The answer of The safest and simplest way to observe...

Question 11

A solar eclipse can only occur when the Moon is ____

Accepted Answer

A)   full
B)   new
C)   waning
D)   waxing
E)   rising

Question 12

To see a solar eclipse, you have to be in Earth's shadow.

Accepted Answer

A) True 
 B)False

Question 13

At what point is the Moon farthest away from Earth?

Accepted Answer

A)   apogee
B)   perigee
C)   umbra
D)   penumbra
E)   prominence

Question 14

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 15

Explain why "the dark side of the Moon" is an incorrect statement.

Accepted Answer

As the Moon orbits Earth, it rotates to ...

Question 16

Calculate the angular diameter of the Moon with these known facts: Moon's linear diameter = 3480 km
Moon's average distance from Earth = 384,000 km
Number of arc seconds in 1 radian = 2.06 x 105

Accepted Answer

A)   31 arc seconds
B)   187 arc seconds
C)   1750 arc seconds
D)   1870 arc seconds
E)   1910 arc seconds

Question 17

Why does the Moon appear reddish during a total lunar eclipse and not go completely dark?

Accepted Answer

During a total lunar eclipse, you would ...

Question 18

What astronomical period takes 18 years 11 1/3 days to complete?

Accepted Answer

A)   synodic cycle
B)   lunar phase cycle
C)   eclipse season
D)   sidereal period
E)   Saros cycle

Question 19

During the _______________ phase, sunlight illuminates the far side of the Moon, and the side you see is in darkness.

Accepted Answer

The answer of During the _______________ phase, sunlight illuminates the...

Question 20

Any location on the Moon is sunlit for three weeks and is in darkness for one week as the Moon rotates.

Accepted Answer

A) True 
 B)False

Exam 3: Moon Phases and Eclipses

To see a solar eclipse, you have to be in Earth's shadow.

Correct AnswerverifiedShow Answer

How many times does the Moon cross the ecliptic each month?

Correct AnswerverifiedShow Answer

The _______________ formula expresses the relationship of the linear (true) diameter, the angular (apparent) diameter, and the distance, of any object.

Correct Answerverifiedsmall-angl...View AnswerShow Answer

What astronomical period takes 18 years 11 1/3 days to complete?

Correct AnswerverifiedShow Answer

The safest and simplest way to observe the partial phases of a solar eclipse is to use _______________ projection .

Correct AnswerverifiedShow Answer

How would you explain to your friend, who knows nothing about astronomy, the way to predict the next eclipse of the Sun?

Correct AnswerverifiedThere are two conditions for an eclipse ...View AnswerShow Answer

Any location on the Moon is sunlit for three weeks and is in darkness for one week as the Moon rotates.

Correct AnswerverifiedShow Answer

What happens every 29.5 days?

Correct AnswerverifiedShow Answer

Describe all that you would see during a total eclipse of the Sun.

Correct AnswerverifiedDuring a totally eclipsed Sun, the Moon'...View AnswerShow Answer

Why does the Moon appear reddish during a total lunar eclipse and not go completely dark?

Correct AnswerverifiedDuring a total lunar eclipse, you would ...View AnswerShow 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

A solar eclipse can only occur when the Moon is ____

Correct AnswerverifiedShow Answer

Calculate the angular diameter of the Moon with these known facts: Moon's linear diameter = 3480 km Moon's average distance from Earth = 384,000 km Number of arc seconds in 1 radian = 2.06 x 105

Correct AnswerverifiedShow Answer

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

Correct Answerverifiedpartial lu...View AnswerShow Answer

A(n) _______________ can occur only at a full Moon if the Moon's path carries it through the shadow of Earth.

Correct AnswerverifiedShow Answer

Explain why "the dark side of the Moon" is an incorrect statement.

Correct AnswerverifiedAs the Moon orbits Earth, it rotates to ...View AnswerShow Answer

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

Correct AnswerverifiedShow Answer

At what point is the Moon farthest away from Earth?

Correct AnswerverifiedShow Answer

What is a new moon?

Correct AnswerverifiedShow Answer

During the _______________ phase, sunlight illuminates the far side of the Moon, and the side you see is in darkness.

Correct AnswerverifiedShow Answer

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small-angl...
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There are two conditions for an eclipse ...
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During a totally eclipsed Sun, the Moon'...
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During a total lunar eclipse, you would ...
View Answer

Correct Answer
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Calculate the angular diameter of the Moon with these known facts: Moon's linear diameter = 3480 km Moon's average distance from Earth = 384,000 km Number of arc seconds in 1 radian = 2.06 x 10⁵

Correct Answer
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partial lu...
View Answer

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As the Moon orbits Earth, it rotates to ...
View Answer

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