Question 1

What two pieces of information are needed to determine the diameter of a faraway object? Explain how that information is used to determine the diameter.

Accepted Answer

The distance and the angular d

Question 2

A(n) ____________________ Moon rises in the eastern sky approximately as Sun sets.

Accepted Answer

The answer of A(n) ____________________ Moon rises in the eastern...

Question 3

The Moon has an angular diameter of 0.5°. What is the Moon's angular diameter in minutes of arc?

Accepted Answer

A)  0.5 
B)  30 
C)  50 
D)  1800 
E)  60.5 
A)  0.5 
B)  30 
C)  50 
D)  1800 
E)  60.5

Question 4

A portion or all of the same zodiac constellations can be seen by those in either hemisphere year round.

Accepted Answer

A) True 
 B)False

Question 5

The ecliptic can be defined as

Accepted Answer

A)  the plane that is perpendicular to the Earth's axis of rotation. 
B)  the projection of the Earth's equator onto the sky. 
C)  the path traced out by the Moon in our sky in one month against the background stars. 
D)  the path traced out by the Sun in our sky over one year against the background stars. 
A)  the plane that is perpendicular to the Earth's axis of rotation. 
B)  the projection of the Earth's equator onto the sky. 
C)  the path traced out by the Moon in our sky in one month against the background stars. 
D)  the path traced out by the Sun in our sky over one year against the background stars.

Question 6

The equator receives the same amount of sunlight from season to season.

Accepted Answer

A) True 
 B)False

Question 7

A total lunar eclipse is

Accepted Answer

A)  visible only from the path of totality. 
B)  visible only during a new Moon. 
C)  visible to all observers on the side of Earth from which the Moon would be visible at that time. 
D)  an opportunity to study the corona of the Sun. 
E)  None of the other choices are correct. 
A)  visible only from the path of totality. 
B)  visible only during a new Moon. 
C)  visible to all observers on the side of Earth from which the Moon would be visible at that time. 
D)  an opportunity to study the corona of the Sun. 
E)  None of the other choices are correct.

Question 8

An eclipse season is the interval during which the Sun crosses a node of the Moon's orbit.

Accepted Answer

A) True 
 B)False

Question 9

A total lunar eclipse is visible only from the path of totality.

Accepted Answer

A) True 
 B)False

Question 10

Why can neither Venus nor Mercury remain visible throughout the night as the full Moon does?

Accepted Answer

Venus and Mercury orbit the Su

Question 11

Relative to the stars in the sky, the Sun moves

Accepted Answer

A)  about one degree westward each day. 
B)  about one degree eastward each day. 
C)  about 360 degrees westward each day. 
D)  about 360 degrees eastward each day. 
E)  along the celestial equator. 
A)  about one degree westward each day. 
B)  about one degree eastward each day. 
C)  about 360 degrees westward each day. 
D)  about 360 degrees eastward each day. 
E)  along the celestial equator.

Question 12

Describe the evidence that best supports the Milankovitch hypothesis.

Accepted Answer

Cores of seafloor sediment, which geolog

Question 13

​
The solar corona is shown as white lines streaming from the Sun and you are viewing it from Earth. Which eclipse are you observing?

Accepted Answer

A)  annular eclipse 
B)  total solar eclipse 
C)  total lunar eclipse 
D)  partial solar eclipse 
A)  annular eclipse 
B)  total solar eclipse 
C)  total lunar eclipse 
D)  partial solar eclipse

Question 14

​
In the picture shown, in which hemisphere is the person located and the location of the Sun is above what geographic point on Earth?

Accepted Answer

A)  northern, north of the equator 
B)  southern, south of the equator 
C)  northern, south of the equator 
D)  southern, north of the equator 
A)  northern, north of the equator 
B)  southern, south of the equator 
C)  northern, south of the equator 
D)  southern, north of the equator

Question 15

Why don't eclipses occur at every new Moon and full Moon?

Accepted Answer

​ The Moon's orbit is tipped a few degre

Question 16

Describe the difference between an umbral and a penumbral lunar eclipse as seen by an observer on Earth.

Accepted Answer

An umbral lunar eclipse is a tota l ecli

Question 17

The seasons are caused by the precession of Earth's axis.

Accepted Answer

A) True 
 B)False

Question 18

A dime is 1.8 cm in diameter. Earth's Moon is 3.844 × 1010 cm from Earth and has a diameter of 3.76 × 108 cm. At what distance from your eye would you have to hold a dime so that it has the same angular diameter as the full Moon?

Accepted Answer

A)  200 cm 
B)  2 cm 
C)  0.2 cm 
D)  2 AU 
E)  2 LY 
A)  200 cm 
B)  2 cm 
C)  0.2 cm 
D)  2 AU 
E)  2 LY

Question 19

A waxing crescent Moon is visible

Accepted Answer

A)  near the eastern horizon just before sunrise. 
B)  near the eastern horizon just after sunset. 
C)  near the western horizon just before sunrise. 
D)  near the western horizon just after sunset. 
E)  from sunset until sunrise. 
A)  near the eastern horizon just before sunrise. 
B)  near the eastern horizon just after sunset. 
C)  near the western horizon just before sunrise. 
D)  near the western horizon just after sunset. 
E)  from sunset until sunrise.

Question 20

Assume all else is unchanged, and the Earth's rotational axis is perpendicular to the ecliptic. As a result, seasonal variations on the Earth would

Accepted Answer

A)  be practically non-existent. 
B)  remain the same as they are at now. 
C)  have the same severity but each season would last twice as long. 
D)  be much more severe. 
A)  be practically non-existent. 
B)  remain the same as they are at now. 
C)  have the same severity but each season would last twice as long. 
D)  be much more severe.

What two pieces of information are needed to determine the diameter of a faraway object? Explain how that information is used to determine the diameter.

A(n) ____________________ Moon rises in the eastern sky approximately as Sun sets.

The Moon has an angular diameter of 0.5°. What is the Moon's angular diameter in minutes of arc?

A portion or all of the same zodiac constellations can be seen by those in either hemisphere year round.

The ecliptic can be defined as

The equator receives the same amount of sunlight from season to season.

A total lunar eclipse is

An eclipse season is the interval during which the Sun crosses a node of the Moon's orbit.

A total lunar eclipse is visible only from the path of totality.

Why can neither Venus nor Mercury remain visible throughout the night as the full Moon does?

Relative to the stars in the sky, the Sun moves

Describe the evidence that best supports the Milankovitch hypothesis.

The solar corona is shown as white lines streaming from the Sun and you are viewing it from Earth. Which eclipse are you observing?

In the picture shown, in which hemisphere is the person located and the location of the Sun is above what geographic point on Earth?

Why don't eclipses occur at every new Moon and full Moon?

Describe the difference between an umbral and a penumbral lunar eclipse as seen by an observer on Earth.

The seasons are caused by the precession of Earth's axis.

A dime is 1.8 cm in diameter. Earth's Moon is 3.844 × 10¹⁰ cm from Earth and has a diameter of 3.76 × 10⁸ cm. At what distance from your eye would you have to hold a dime so that it has the same angular diameter as the full Moon?

A waxing crescent Moon is visible

Assume all else is unchanged, and the Earth's rotational axis is perpendicular to the ecliptic. As a result, seasonal variations on the Earth would

Here and Now

A Users Guide to the Sky

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 3: Cycles of the Sun and Moon

What two pieces of information are needed to determine the diameter of a faraway object? Explain how that information is used to determine the diameter.

A(n) ____________________ Moon rises in the eastern sky approximately as Sun sets.

The Moon has an angular diameter of 0.5°. What is the Moon's angular diameter in minutes of arc?

A portion or all of the same zodiac constellations can be seen by those in either hemisphere year round.

The ecliptic can be defined as

The equator receives the same amount of sunlight from season to season.

A total lunar eclipse is

An eclipse season is the interval during which the Sun crosses a node of the Moon's orbit.

A total lunar eclipse is visible only from the path of totality.

Why can neither Venus nor Mercury remain visible throughout the night as the full Moon does?

Relative to the stars in the sky, the Sun moves

Describe the evidence that best supports the Milankovitch hypothesis.

​ The solar corona is shown as white lines streaming from the Sun and you are viewing it from Earth. Which eclipse are you observing?

​ In the picture shown, in which hemisphere is the person located and the location of the Sun is above what geographic point on Earth?

Why don't eclipses occur at every new Moon and full Moon?

Describe the difference between an umbral and a penumbral lunar eclipse as seen by an observer on Earth.

The seasons are caused by the precession of Earth's axis.

A dime is 1.8 cm in diameter. Earth's Moon is 3.844 × 1010 cm from Earth and has a diameter of 3.76 × 108 cm. At what distance from your eye would you have to hold a dime so that it has the same angular diameter as the full Moon?

A waxing crescent Moon is visible

Assume all else is unchanged, and the Earth's rotational axis is perpendicular to the ecliptic. As a result, seasonal variations on the Earth would

Here and Now

A Users Guide to the Sky

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 solar corona is shown as white lines streaming from the Sun and you are viewing it from Earth. Which eclipse are you observing?

In the picture shown, in which hemisphere is the person located and the location of the Sun is above what geographic point on Earth?

A dime is 1.8 cm in diameter. Earth's Moon is 3.844 × 10¹⁰ cm from Earth and has a diameter of 3.76 × 10⁸ cm. At what distance from your eye would you have to hold a dime so that it has the same angular diameter as the full Moon?