Question 1

The dynamo effect is believed to produce the ____________________ of the Sun.

Accepted Answer

The answer of The dynamo effect is believed to produce...

Question 2

The Sun has a continuous visual spectrum with dark absorption lines. The continuous spectrum is produced by the ____________ layer while the dark absorption lines are produced by ____________layers.

Accepted Answer

A)  inner chromosphere; outer photosphere 
B)  inner photosphere; outer chromosphere 
C)  inner chromosphere; outer corona 
D)  inner corona, outer chromosphere 
A)  inner chromosphere; outer photosphere 
B)  inner photosphere; outer chromosphere 
C)  inner chromosphere; outer corona 
D)  inner corona, outer chromosphere

Question 3

As the Moon covers the solar disk during a solar eclipse, a flash spectrum of the Sun's chromosphere can be recorded. This flash spectrum reveals an emission spectrum and provides information on the properties of the chromosphere. As the Moon moves from the inner chromosphere to the outer chromosphere, the spectral lines present in the flash spectrum change. What is going on in the chromosphere that produces the changes in the flash spectrum?
I. The temperature of the chromosphere decreases as the distance from the photosphere increases.
II. The temperature of the chromosphere increases as the distance from the photosphere increases.
III. The density of the chromosphere decreases as the distance from the photosphere increases.
IV. The density of the chromosphere increases as the distance from the photosphere increases.

Accepted Answer

A)  I & III 
B)  I & IV 
C)  II & III 
D)  II & IV 
E)  I 
A)  I & III 
B)  I & IV 
C)  II & III 
D)  II & IV 
E)  I

Question 4

Why is the temperature at the region of a sunspot cooler than the photosphere?

Accepted Answer

A)  They are holes in the photosphere that reveal the lower temperature gases in the deeper layers. 
B)  They represent points where streams of cool gas from the corona lower the temperature in those regions of the photosphere. 
C)  Powerful magnetic fields in the sunspots act upon the atoms of the photosphere to prevent them from emitting light. 
D)  Powerful magnetic fields inhibit the convective flow of the gases of the photosphere downward, allowing them to cool for longer than would normally be permitted. 
A)  They are holes in the photosphere that reveal the lower temperature gases in the deeper layers. 
B)  They represent points where streams of cool gas from the corona lower the temperature in those regions of the photosphere. 
C)  Powerful magnetic fields in the sunspots act upon the atoms of the photosphere to prevent them from emitting light. 
D)  Powerful magnetic fields inhibit the convective flow of the gases of the photosphere downward, allowing them to cool for longer than would normally be permitted.

Question 5

The centers of granules

Accepted Answer

A)  are hot material rising to the photosphere from below. 
B)  are cool material falling from the photosphere to the regions below. 
C)  are fainter and hotter than their surroundings. 
D)  are brighter and cooler than their surroundings. 
E)  show strong Zeeman effects. 
A)  are hot material rising to the photosphere from below. 
B)  are cool material falling from the photosphere to the regions below. 
C)  are fainter and hotter than their surroundings. 
D)  are brighter and cooler than their surroundings. 
E)  show strong Zeeman effects.

Question 6

What are the three layers of the Sun's atmosphere, in order of increasing distance from the surface?

Accepted Answer

A)  corona, chromosphere, photosphere 
B)  photosphere, corona, chromosphere 
C)  photosphere, chromosphere, corona 
D)  chromosphere, photosphere, corona 
A)  corona, chromosphere, photosphere 
B)  photosphere, corona, chromosphere 
C)  photosphere, chromosphere, corona 
D)  chromosphere, photosphere, corona

The dynamo effect is believed to produce the ____________________ of the Sun.

The Sun has a continuous visual spectrum with dark absorption lines. The continuous spectrum is produced by the layer while the dark absorption lines are produced by layers.

Why is the temperature at the region of a sunspot cooler than the photosphere?

The centers of granules

What are the three layers of the Sun's atmosphere, in order of increasing distance from the surface?

Here and Now

A Users Guide to the Sky

Cycles of the Sun and Moon

The Origin of Modern Astronomy

Light and Telescopes

Atoms and Spectra

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

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Exam 7: The Sun

The dynamo effect is believed to produce the ____________________ of the Sun.

The Sun has a continuous visual spectrum with dark absorption lines. The continuous spectrum is produced by the ____________ layer while the dark absorption lines are produced by ____________layers.

Why is the temperature at the region of a sunspot cooler than the photosphere?

The centers of granules

What are the three layers of the Sun's atmosphere, in order of increasing distance from the surface?

Here and Now

A Users Guide to the Sky

Cycles of the Sun and Moon

The Origin of Modern Astronomy

Light and Telescopes

Atoms and Spectra

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 Sun has a continuous visual spectrum with dark absorption lines. The continuous spectrum is produced by the layer while the dark absorption lines are produced by layers.