Question 1

A solar eclipse can only occur when the Moon is ____

Accepted Answer

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

Question 2

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

Accepted Answer

During a totally eclipsed Sun, the Moon'

Question 3

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

Accepted Answer

A) True 
 B)False

Question 4

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

Accepted Answer

A) True 
 B)False

Question 5

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 6

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

Accepted Answer

As the Moon orbits Earth, it rotates to

Question 7

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 
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 8

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

Question 9

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 10

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

Question 11

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

Question 12

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 13

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

Question 14

At what point is the Moon farthest away from Earth?

Accepted Answer

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

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 
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

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

Accepted Answer

partial lu

Question 17

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 18

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 19

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 20

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

Accepted Answer

small-angl

Exam 3: Moon Phases and Eclipses

A solar eclipse can only occur when the Moon is ____

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

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

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

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

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

What happens every 29.5 days?

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

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

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

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

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

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

At what point is the Moon farthest away from Earth?

What is a new moon?

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

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

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

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

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

Here and Now

A Users Guide to the Sky

Origins of Modern Astronomy

Gravity

Light and Telescopes

Atoms and Spectra

The Sun

The Family of Stars

The Interstellar Medium

Formation and Structure of Stars

Stellar Evolution

Deaths of Stars

Neutron Stars and Black Holes

The Milky Way Galaxy

Galaxies

Supermassive Black Holes and Active Galaxies

Modern Cosmology

Origin of the Solar System and Extrasolar Planets

Earth the Active Planet

The Moon and Mercury

Venus and Mars

Jupiter and Saturn

Uranus Neptune Pluto and the Kuiper Belt

Meteorites Asteroids and Comets

Astrobiology

Filters

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