Question 1

The above diagram indicates that:

Accepted Answer

A)  the Sun is hottest somewhere between its surface and its core. 
B)  the Sun is coolest somewhere between its surface and its core. 
C)  the Sun is hotter at its surface than at its core. 
D)  the Sun is hotter at its core than at its surface. 
E)  the Sun has about the same temperature throughout its interior. 
A)  the Sun is hottest somewhere between its surface and its core. 
B)  the Sun is coolest somewhere between its surface and its core. 
C)  the Sun is hotter at its surface than at its core. 
D)  the Sun is hotter at its core than at its surface. 
E)  the Sun has about the same temperature throughout its interior.

Question 2

In the proton-proton cycle,the positron is:

Accepted Answer

A)  massless. 
B)  a spin conservation particle. 
C)  an anti-electron. 
D)  the chief means energy reaches the photosphere. 
E)  intermediate between the proton and neutron in mass. 
A)  massless. 
B)  a spin conservation particle. 
C)  an anti-electron. 
D)  the chief means energy reaches the photosphere. 
E)  intermediate between the proton and neutron in mass.

Question 3

What are the main constituents of the solar wind? Which travel faster?

Accepted Answer

The lower mass elect

Question 4

By what mechanism does solar energy reach the Sun's photosphere from the layer just underneath it?

Accepted Answer

A)  differentiation 
B)  ionization 
C)  radiation 
D)  convection 
E)  conduction 
A)  differentiation 
B)  ionization 
C)  radiation 
D)  convection 
E)  conduction

Question 5

On the Sun,what takes approximately 22 years to happen?

Accepted Answer

A)  The Sun takes that time to rotate on its axis. 
B)  The complete sunspot cycle, including magnetic field reversals. 
C)  Solar vibrations begin every 22 years. 
D)  Solar activities goes from its maximum to minimum. 
E)  The corona reaches its maximum temperature and ejects gas every 22 years. 
A)  The Sun takes that time to rotate on its axis. 
B)  The complete sunspot cycle, including magnetic field reversals. 
C)  Solar vibrations begin every 22 years. 
D)  Solar activities goes from its maximum to minimum. 
E)  The corona reaches its maximum temperature and ejects gas every 22 years.

Question 6

In contrast to the photosphere's continuum,the spectrum of the chromosphere is dominated by ________ lines.

Accepted Answer

The answer of In contrast to the photosphere's continuum,the spectrum...

Question 7

Why are SOHO (the Solar and Heliospheric Observatory)and the Solar Dynamics Observatory (SDO)positioned beyond Earth's magnetosphere?

Accepted Answer

To ensure that particles from

Question 8

Sunspots are dark splotches on the Sun.Which statement is true?

Accepted Answer

A)  They are hotter than the surrounding areas of the Sun. 
B)  They are extremely cold objects, as cold as Pluto. 
C)  They are extremely hot, but cooler than the surrounding areas of the Sun. 
D)  They are solid bodies floating on the surface of the Sun. 
E)  They are associated with areas of very low magnetic fields. 
A)  They are hotter than the surrounding areas of the Sun. 
B)  They are extremely cold objects, as cold as Pluto. 
C)  They are extremely hot, but cooler than the surrounding areas of the Sun. 
D)  They are solid bodies floating on the surface of the Sun. 
E)  They are associated with areas of very low magnetic fields.

Question 9

Describe the transport of energy,from the deep interior of the Sun,to when it finally reaches the Earth.Include the various methods of transport.

Accepted Answer

Energy is produced in the core.It enters

Question 10

Describe the method of energy production in the Sun.What is the fuel? What is the end product? What kind of interactions occur? What is the role of temperature in the process? Could we use this process to produce energy on Earth?

Accepted Answer

The Sun produces energy by fusing hydrog

Question 11

Which is the net result of the proton-proton chain?

Accepted Answer

A)  4 protons = 1 helium 4 + a positron + a neutrino + gamma rays 
B)  2 protons = deuterium + a positron + an antineutrino + X-rays 
C)  4 protons = 2 heliums 2 + 2 positrons + ultraviolet radiation 
D)  4 protons = 1 helium 4 + 2 neutrinos + gamma rays 
E)  6 protons = 2 heliums + 3 positrons + 3 neutrinos + gamma rays 
A)  4 protons = 1 helium 4 + a positron + a neutrino + gamma rays 
B)  2 protons = deuterium + a positron + an antineutrino + X-rays 
C)  4 protons = 2 heliums 2 + 2 positrons + ultraviolet radiation 
D)  4 protons = 1 helium 4 + 2 neutrinos + gamma rays 
E)  6 protons = 2 heliums + 3 positrons + 3 neutrinos + gamma rays

Question 12

The Sun's mass and volume are over a million times that of our Earth.

Accepted Answer

A) True 
 B)False

Question 13

Why is it hard to observe the chromosphere?

Accepted Answer

Most of its energy is in the b

Exam 16: The Sun: Our Parent Star

The above diagram indicates that:

In the proton-proton cycle,the positron is:

What are the main constituents of the solar wind? Which travel faster?

By what mechanism does solar energy reach the Sun's photosphere from the layer just underneath it?

On the Sun,what takes approximately 22 years to happen?

In contrast to the photosphere's continuum,the spectrum of the chromosphere is dominated by ________ lines.

Why are SOHO (the Solar and Heliospheric Observatory)and the Solar Dynamics Observatory (SDO)positioned beyond Earth's magnetosphere?

Sunspots are dark splotches on the Sun.Which statement is true?

Describe the transport of energy,from the deep interior of the Sun,to when it finally reaches the Earth.Include the various methods of transport.

Describe the method of energy production in the Sun.What is the fuel? What is the end product? What kind of interactions occur? What is the role of temperature in the process? Could we use this process to produce energy on Earth?

Which is the net result of the proton-proton chain?

The Sun's mass and volume are over a million times that of our Earth.

Why is it hard to observe the chromosphere?

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?

Filters