Question 1

While observing the Sun,you note a large number of sunspots.What can you conclude?

Accepted Answer

A)  The Sun is less luminous than usual. 
B)  This is a period of low solar activity. 
C)  Earth's climate will be unusually cold. 
D)  The Sun's rotation is slower than average. 
E)  There are likely to be an above average number of flares and prominences. 
A)  The Sun is less luminous than usual. 
B)  This is a period of low solar activity. 
C)  Earth's climate will be unusually cold. 
D)  The Sun's rotation is slower than average. 
E)  There are likely to be an above average number of flares and prominences.

Question 2

The Sun's ________ transports material from the Sun's equator to its poles and back to the equator.

Accepted Answer

The answer of The Sun's ________ transports material from the...

Question 3

From where does most of the solar wind flow?

Accepted Answer

A)  granules 
B)  sunspots 
C)  flares 
D)  prominences 
E)  coronal holes 
A)  granules 
B)  sunspots 
C)  flares 
D)  prominences 
E)  coronal holes

Question 4

At very large distances from the Sun,its corona turns into the solar wind.

Accepted Answer

A) True 
 B)False

Question 5

Why is studying the neutrino so vital to understanding the solar interior?

Accepted Answer

Alone of all the products of the proton-

Question 6

The critical temperature to initiate the proton-proton cycle in the cores of stars is:

Accepted Answer

A)  3,000 K. 
B)  5,800 K. 
C)  2,300,000 K. 
D)  10 million K. 
E)  100 million K. 
A)  3,000 K. 
B)  5,800 K. 
C)  2,300,000 K. 
D)  10 million K. 
E)  100 million K.

Question 7

The solar magnetic field is strongest in those regions called ________,which are poles and usually thus occur in pairs.

Accepted Answer

The answer of The solar magnetic field is strongest in...

Question 8

Energy produced in the solar core is transferred by ________ until it reaches a point about 500,000 km from the center.

Accepted Answer

The answer of Energy produced in the solar core is...

Question 9

The solar corona produces a lot more X-rays than it does visible light.

Accepted Answer

A) True 
 B)False

Question 10

The energy of the Sun starts as radiation,but is actually transported to its surface by convection,where it is radiated off into space at last.

Accepted Answer

A) True 
 B)False

Question 11

The proton-proton chain requires a temperature of 100 million K to get started.

Accepted Answer

A) True 
 B)False

Question 12

Explain what the granulation of the solar surface is related to.

Accepted Answer

The surface of the Sun is highly mottled

Question 13

How would sunspots appear if you could magically remove them from the Sun?

Accepted Answer

A)  They would appear blue-white, like Sirius but brighter. 
B)  Because sunspots are dark spots, they would be invisible against the blackness of space. 
C)  They would shine bright orange in color, like Arcturus. 
D)  They would not appear any differently than on the surface of the Sun. 
E)  They would shine only with reflected sunlight, appearing similar to Venus. 
A)  They would appear blue-white, like Sirius but brighter. 
B)  Because sunspots are dark spots, they would be invisible against the blackness of space. 
C)  They would shine bright orange in color, like Arcturus. 
D)  They would not appear any differently than on the surface of the Sun. 
E)  They would shine only with reflected sunlight, appearing similar to Venus.

Question 14

Granulation is the most obvious proof of solar convective energy transport.

Accepted Answer

A) True 
 B)False

Question 15

The chromosphere is red because it is hot enough to ________ hydrogen atoms.

Accepted Answer

The answer of The chromosphere is red because it is...

Question 16

Solar activity cannot disrupt communications on Earth.

Accepted Answer

A) True 
 B)False

Question 17

Both the gravitational and electromagnetic forces obey the inverse square law,and extend infinitely outward in their effects.

Accepted Answer

A) True 
 B)False

Question 18

The above diagram indicates that:

Accepted Answer

A)  the Sun is most dense somewhere between its surface and its core. 
B)  the Sun is least dense somewhere between its surface and its core. 
C)  the Sun is more dense at its surface than at its core. 
D)  the Sun is more dense at its core than at its surface. 
E)  the Sun has about the same density throughout its interior. 
A)  the Sun is most dense somewhere between its surface and its core. 
B)  the Sun is least dense somewhere between its surface and its core. 
C)  the Sun is more dense at its surface than at its core. 
D)  the Sun is more dense at its core than at its surface. 
E)  the Sun has about the same density throughout its interior.

Question 19

Which of the following is NOT a property of neutrinos?

Accepted Answer

A)  can change forms in the eight minutes from the Sun's core to us 
B)  almost massless 
C)  can travel very close to the speed of light 
D)  neutral in charge 
E)  cannot interact at all with normal matter 
A)  can change forms in the eight minutes from the Sun's core to us 
B)  almost massless 
C)  can travel very close to the speed of light 
D)  neutral in charge 
E)  cannot interact at all with normal matter

Question 20

The Solar and Heliospheric Observatory (SOHO)is positioned:

Accepted Answer

A)  in a geosynchronous orbit around the Earth. 
B)  in near-Earth orbit. 
C)  about 1.5 million kilometers from Earth at the L₁ Lagrangian Point. 
D)  on the far side of the Sun at the L₃ Langrangian Point. 
E)  on the far side of the Moon. 
A)  in a geosynchronous orbit around the Earth. 
B)  in near-Earth orbit. 
C)  about 1.5 million kilometers from Earth at the L₁ Lagrangian Point. 
D)  on the far side of the Sun at the L₃ Langrangian Point. 
E)  on the far side of the Moon.

Exam 16: The Sun: Our Parent Star

While observing the Sun,you note a large number of sunspots.What can you conclude?

The Sun's ________ transports material from the Sun's equator to its poles and back to the equator.

From where does most of the solar wind flow?

At very large distances from the Sun,its corona turns into the solar wind.

Why is studying the neutrino so vital to understanding the solar interior?

The critical temperature to initiate the proton-proton cycle in the cores of stars is:

The solar magnetic field is strongest in those regions called ________,which are poles and usually thus occur in pairs.

Energy produced in the solar core is transferred by ________ until it reaches a point about 500,000 km from the center.

The solar corona produces a lot more X-rays than it does visible light.

The energy of the Sun starts as radiation,but is actually transported to its surface by convection,where it is radiated off into space at last.

The proton-proton chain requires a temperature of 100 million K to get started.

Explain what the granulation of the solar surface is related to.

How would sunspots appear if you could magically remove them from the Sun?

Granulation is the most obvious proof of solar convective energy transport.

The chromosphere is red because it is hot enough to ________ hydrogen atoms.

Solar activity cannot disrupt communications on Earth.

Both the gravitational and electromagnetic forces obey the inverse square law,and extend infinitely outward in their effects.

The above diagram indicates that:

Which of the following is NOT a property of neutrinos?

The Solar and Heliospheric Observatory (SOHO)is positioned:

Charting the Heavens: The Foundations of Astronomy

The Copernican Revolution: The Birth of Modern Science

Radiation: Information from the Cosmos

Spectroscopy: The Inner Workings of Atoms

Telescopes: The Tools of Astronomy

The Solar System: Comparative Planetology and Formation Models

Earth: Our Home in Space

The Moon and Mercury: Scorched and Battered Worlds

Venus: Earth's Sister Planet

Mars: A Near Miss for Life?

Jupiter: Giant of the Solar System

Saturn: Spectacular Rings and Mysterious Moons

Uranus and Neptune: The Outer Worlds of the Solar System

Solar System Debris: Keys to Our Origin

Exoplanets: Planetary Systems Beyond Our Own

The Stars: Giants,Dwarfs,and the Main Sequence

The Interstellar Medium: Gas and Dust among the Stars

Star Formation: A Traumatic Birth

Stellar Evolution: The Life and Death of a Star

Stellar Explosions: Novae,Supernovae,and the Formation of the Elements

Neutron Stars and Black Holes: Strange States of Matter

The Milky Way Galaxy: A Spiral in Space

Galaxies: Building Blocks of the Universe

Galaxies and Dark Matter: The Large-Scale Structure of the Cosmos

Cosmology: The Big Bang and the Fate of the Universe

The Early Universe: Toward the Beginning of Time

Life in the Universe: Are We Alone?

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