Question 1

The energy generated by the sun is released by the ____ to make ____ nuclei.

Accepted Answer

A)  fusion of H nuclei,He 
B)  fusion of He nuclei,H 
C)  fission of H nuclei,He 
D)  fission of He nuclei,H 
A)  fusion of H nuclei,He 
B)  fusion of He nuclei,H 
C)  fission of H nuclei,He 
D)  fission of He nuclei,H A

Question 2

Sunspots are hotter than the photosphere.

Accepted Answer

A) True 
 B)False  False

Question 3

The variation in the strength of the calcium H and K emission from sun-like stars implies that these stars

Accepted Answer

A)  probably have very extended coronae. 
B)  probably have a magnetic cycle similar to the sun's. 
C)  do not rotate differentially. 
D)  may have planets that orbit them. 
E)  probably have supergranules and spicules. 
A)  probably have very extended coronae. 
B)  probably have a magnetic cycle similar to the sun's. 
C)  do not rotate differentially. 
D)  may have planets that orbit them. 
E)  probably have supergranules and spicules. B

Question 4

The Zeeman effect can be used to determine the _______ our sun and other stars.

Accepted Answer

A)  rotation speed of 
B)  mass of 
C)  color of 
D)  magnetic field on 
E)  radial velocity toward or away from 
A)  rotation speed of 
B)  mass of 
C)  color of 
D)  magnetic field on 
E)  radial velocity toward or away from

Question 5

Sunspots

Accepted Answer

A)  are hotter than their surroundings. 
B)  are regions where material is rising from below the photosphere. 
C)  show the Zeeman effect indicating the presence of strong magnetic fields. 
D)  produce spicules. 
E)  are generally found near the poles of the sun during sunspot maximum. 
A)  are hotter than their surroundings. 
B)  are regions where material is rising from below the photosphere. 
C)  show the Zeeman effect indicating the presence of strong magnetic fields. 
D)  produce spicules. 
E)  are generally found near the poles of the sun during sunspot maximum.

Question 6

Fusion is promoted in the core of the sun by the ____ there.

Accepted Answer

A)  low temperature and low density 
B)  high temperature and high density 
C)  low temperature and high density 
D)  high temperature and low density 
A)  low temperature and low density 
B)  high temperature and high density 
C)  low temperature and high density 
D)  high temperature and low density

Question 7

____ occur(s)because photons we receive from the edge of the solar disk are emitted further from the base of the photosphere than the photons we receive from the center of the solar disk.

Accepted Answer

A)  The Zeeman Effect 
B)  Sunspots 
C)  Solar flares 
D)  Solar prominences 
E)  Limb darkening 
A)  The Zeeman Effect 
B)  Sunspots 
C)  Solar flares 
D)  Solar prominences 
E)  Limb darkening

Question 8

Solar prominences have twisted and looped shapes because of the solar magnetic field.

Accepted Answer

A) True 
 B)False

Question 9

An older theory suggested that the corona was heated by shock waves from the convection zone.

Accepted Answer

A) True 
 B)False

Question 10

Neutrinos are created in reactions in the ____ of the sun.

Accepted Answer

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

Question 11

The solar constant is a measure of

Accepted Answer

A)  the amount of solar energy reaching the earth. 
B)  the length of the sunspot cycle. 
C)  the period of rotation of the sun's equator. 
D)  the average number of sunspots seen during the Maunder minimum. 
E)  the sun's mass. 
A)  the amount of solar energy reaching the earth. 
B)  the length of the sunspot cycle. 
C)  the period of rotation of the sun's equator. 
D)  the average number of sunspots seen during the Maunder minimum. 
E)  the sun's mass.

Question 12

Sunspots often appear in pairs.

Accepted Answer

A) True 
 B)False

Question 13

Most of the light we see coming from the sun originates in the ____________________.

Accepted Answer

The answer of Most of the light we see coming...

Question 14

A filtergram is used to study layers below the photosphere.

Accepted Answer

A) True 
 B)False

Question 15

The photosphere is very thin because

Accepted Answer

A)  the temperature of the photosphere increases rapidly from its base to its outer edge. 
B)  the gas bubbles that form the granulation pattern cannot travel very far. 
C)  the magnetic field compresses the photosphere. 
D)  the H -  ion is a very good absorber of photons and causes the gas of the photosphere to be opaque. 
E)  the sun rotates differentially. 
A)  the temperature of the photosphere increases rapidly from its base to its outer edge. 
B)  the gas bubbles that form the granulation pattern cannot travel very far. 
C)  the magnetic field compresses the photosphere. 
D)  the H -  ion is a very good absorber of photons and causes the gas of the photosphere to be opaque. 
E)  the sun rotates differentially.

Question 16

The Zeeman Effect shows that sunspots contain magnetic fields.

Accepted Answer

A) True 
 B)False

Question 17

____________ of hydroden atom nuclei replace the heat the sun ____________ to keep it in equilibrium.

Accepted Answer

A)  Nuclear fusion reactions; loses into space 
B)  Nuclear fusion reactions; gains from empty space 
C)  Chemical reactions; loses into space 
D)  Chemical reactions; gains from empty space 
E)  Nuclear fission; loses into space 
A)  Nuclear fusion reactions; loses into space 
B)  Nuclear fusion reactions; gains from empty space 
C)  Chemical reactions; loses into space 
D)  Chemical reactions; gains from empty space 
E)  Nuclear fission; loses into space

Question 18

The ____________________ shows that sunspots are associated with magnetic activity.

Accepted Answer

The answer of The ____________________ shows that sunspots are associated...

Question 19

The Sun appears to rotate only because the Earth is revolving about the Sun.

Accepted Answer

A) True 
 B)False

Question 20

If the spectrum of a sunspot shows that it has a maximum intensity at 650 nm,what is the temperature of the sunspot?

Accepted Answer

A)  650 K 
B)  5000 K 
C)  1950 K 
D)  4600 K 
E)  10,000 K 
A)  650 K 
B)  5000 K 
C)  1950 K 
D)  4600 K 
E)  10,000 K

Exam 8: The Sun

The energy generated by the sun is released by the ____ to make ____ nuclei.

Sunspots are hotter than the photosphere.

The variation in the strength of the calcium H and K emission from sun-like stars implies that these stars

The Zeeman effect can be used to determine the _______ our sun and other stars.

Sunspots

Fusion is promoted in the core of the sun by the ____ there.

____ occur(s)because photons we receive from the edge of the solar disk are emitted further from the base of the photosphere than the photons we receive from the center of the solar disk.

Solar prominences have twisted and looped shapes because of the solar magnetic field.

An older theory suggested that the corona was heated by shock waves from the convection zone.

Neutrinos are created in reactions in the ____ of the sun.

The solar constant is a measure of

Sunspots often appear in pairs.

Most of the light we see coming from the sun originates in the ____________________.

A filtergram is used to study layers below the photosphere.

The photosphere is very thin because

The Zeeman Effect shows that sunspots contain magnetic fields.

____________ of hydroden atom nuclei replace the heat the sun ____________ to keep it in equilibrium.

The ____________________ shows that sunspots are associated with magnetic activity.

The Sun appears to rotate only because the Earth is revolving about the Sun.

If the spectrum of a sunspot shows that it has a maximum intensity at 650 nm,what is the temperature of the sunspot?

Here and Now

A Users Guide to the Sky

Cycles of the Moon

The Origin of Modern Astronomy

Gravity

Light and Telescopes

Atoms and Spectra

The Family of Stars

The Interstellar Medium

The Formation and Structure of Stars

Stellar Evolution

The Deaths of Stars

Neutron Stars and Black Holes

The Milky Way Galaxy

Galaxies

Active Galaxies and Supermassive Black Holes

Modern Cosmology

The Origin of the Solar System

Earth: the Standard of Comparative Planetology

The Moon and Mercury: Comparing Airless Worlds

Venus and Mars

Jupiter and Saturn

Uranus,neptune,and the Kuiper Belt

Meteorites,asteroids,and Comets

Astrobiology: Life on Other Worlds

Filters

The energy generated by the sun is released by the to make nuclei.

of hydroden atom nuclei replace the heat the sun to keep it in equilibrium.