Question 1

The upper chromosphere is hot enough to emit X-rays.

Accepted Answer

A) True 
 B)False

Question 2

Helioseismology maps of rotation in the Sun's interior show that its internal gases rotate with equal periods.

Accepted Answer

A) True 
 B)False

Question 3

The number of _______________ visible on the Sun varies in a cycle with a period of 11 years.

Accepted Answer

The answer of The number of _______________ visible on the...

Question 4

Match between columns
                        Premises: Subatomic particles released from the proton-proton chain of nuclear fusion
The outermost part of the Sun's atmosphere
Flame-like structures that extend upward into the lower corona
Arches of magnetic field visible in the chromosphere and corona
A breeze of low-density ionized gas streaming away from the Sun
Violent bursts of ionized gas ejected from magnetic fields that flow outward in the solar wind
The layer in the Sun from which visible photons most easily escape
Cool, relatively dark spots on the Sun's photosphere, usually appearing in group

Accepted Answer

The Answer of sunspots and coronal mass ejection and prominences is...

Question 5

The solar wind extends to the _______________ , marking an outer boundary of the Solar System.

Accepted Answer

The answer of The solar wind extends to the _______________...

Question 6

The corona is so dim that it is not visible in Earth's daytime sky.

Accepted Answer

A) True 
 B)False

Question 7

Which of the natural forces bind atomic nuclei?

Accepted Answer

A)  strong force 
B)  weak force 
C)  gravitational force 
D)  Newtonian force 
E)  electromagnetic force 
A)  strong force 
B)  weak force 
C)  gravitational force 
D)  Newtonian force 
E)  electromagnetic force

Question 8

Historical records show that there were very few sunspots from about 1645 to 1715, a phenomenon known as the _______________.

Accepted Answer

The answer of Historical records show that there were very...

Question 9

What are the only four forces that can affect matter?

Accepted Answer

The four forces are

Question 10

Which is the correct order of the Sun's atmospheric layers, from the innermost to outermost?

Accepted Answer

A)  chromosphere → corona → photosphere 
B)  corona → chromosphere → photosphere 
C)  chromosphere → photosphere → corona 
D)  photosphere → chromosphere → corona 
E)  photosphere → corona → chromosphere 
A)  chromosphere → corona → photosphere 
B)  corona → chromosphere → photosphere 
C)  chromosphere → photosphere → corona 
D)  photosphere → chromosphere → corona 
E)  photosphere → corona → chromosphere

Question 11

The Sun is a ball of hot gas held together by its own gravity.

Accepted Answer

A) True 
 B)False

Question 12

Sunspots tend to occur in groups, or pairs, with the magnetic field around the pair resembling that around a bar magnet.

Accepted Answer

A) True 
 B)False

Question 13

The magnetic polarities of sunspots _______________ at the end of an 11-year cycle.

Accepted Answer

The answer of The magnetic polarities of sunspots _______________ at...

Question 14

The most abundant gas making up the Sun's composition is _______________.

Accepted Answer

The answer of The most abundant gas making up the...

Question 15

Match between columns
                        Premises: Subatomic particles released from the proton-proton chain of nuclear fusion

Accepted Answer

The Answer of solar wind and prominences and coronal mass is...

Question 16

What is the approximate average temperature of the Sun's surface?

Accepted Answer

A)  5000  o  C 
B)  5800oC 
C)  5800 K 
D)  6400 K 
E)  10,000oC 
A)  5000  o  C 
B)  5800oC 
C)  5800 K 
D)  6400 K 
E)  10,000oC

Question 17

The Maunder minimum occurred in the 17th century, which many scientists debate the labeling of that time as the "Little Ice Age". However, it occurred before the Industrial Revolution and thus, had no significant impact on the human standard of living as we know in today's society. Suppose the Sun experienced a similar period today. How would life on Earth be impacted?

Accepted Answer

Answers will vary, but should

Question 18

Why was the Davis experiment only able to detect one-third of the neutrinos originally predicted?

Accepted Answer

A)  Most of the neutrinos were absorbed by Earth's atmosphere. 
B)  The neutrinos combined with other particles as they entered Earth's atmosphere. 
C)  The neutrinos distributed evenly among three different flavors while traveling to Earth. 
D)  The number of neutrinos was too great to be held in the tank that Davis designed. 
E)  The other two-thirds of neutrinos dissipated while traveling to Earth. 
A)  Most of the neutrinos were absorbed by Earth's atmosphere. 
B)  The neutrinos combined with other particles as they entered Earth's atmosphere. 
C)  The neutrinos distributed evenly among three different flavors while traveling to Earth. 
D)  The number of neutrinos was too great to be held in the tank that Davis designed. 
E)  The other two-thirds of neutrinos dissipated while traveling to Earth.

Question 19

Explain the role of convection on the Sun's surface.

Accepted Answer

Energy flowing toward the Sun's surface

Question 20

Of the following parts of the Sun, which is the hottest?

Accepted Answer

A)  sunspots 
B)  corona 
C)  photosphere 
D)  supergranules 
E)  chromosphere 
A)  sunspots 
B)  corona 
C)  photosphere 
D)  supergranules 
E)  chromosphere

Exam 8: The Sun

The upper chromosphere is hot enough to emit X-rays.

Helioseismology maps of rotation in the Sun's interior show that its internal gases rotate with equal periods.

The number of _______________ visible on the Sun varies in a cycle with a period of 11 years.

The solar wind extends to the _______________ , marking an outer boundary of the Solar System.

The corona is so dim that it is not visible in Earth's daytime sky.

Which of the natural forces bind atomic nuclei?

Historical records show that there were very few sunspots from about 1645 to 1715, a phenomenon known as the _______________.

What are the only four forces that can affect matter?

Which is the correct order of the Sun's atmospheric layers, from the innermost to outermost?

The Sun is a ball of hot gas held together by its own gravity.

Sunspots tend to occur in groups, or pairs, with the magnetic field around the pair resembling that around a bar magnet.

The magnetic polarities of sunspots _______________ at the end of an 11-year cycle.

The most abundant gas making up the Sun's composition is _______________.

What is the approximate average temperature of the Sun's surface?

Why was the Davis experiment only able to detect one-third of the neutrinos originally predicted?

Explain the role of convection on the Sun's surface.

Of the following parts of the Sun, which is the hottest?

Here and Now

A Users Guide to the Sky

Moon Phases and Eclipses

Origins of Modern Astronomy

Gravity

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The Family of Stars

The Interstellar Medium

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Modern Cosmology

Origin of the Solar System and Extrasolar Planets

Earth the Active Planet

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