Question 1

If a sunspot has a temperature of 4,500 K and the surrounding solar surface has a temperature of 5,800 K, how many times brighter is the surface compared to the sunspot

Accepted Answer

A) 0.28 
B) 0.36 
C) 2.8 
D) 3.6 
E) 36 
A) 0.28 
B) 0.36 
C) 2.8 
D) 3.6 
E) 36

Question 2

The Sun's magnetic field is highlighted by the visible arches of prominences.

Accepted Answer

A) True 
 B)False

Question 3

A recent sunspot maximum occurred in 2013. What is the year of the sunspot maximum that immediately follows the 2013 maximum if the solar cycle continues

Accepted Answer

A) 2017 
B) 2019 
C) 2022 
D) 2024 
E) The last cycle started a Maunder minimum and the next maximum cannot be predicted. 
A) 2017 
B) 2019 
C) 2022 
D) 2024 
E) The last cycle started a Maunder minimum and the next maximum cannot be predicted.

Question 4

________ 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 5

A breeze of low-density ionized gas that streams away from the Sun through _______________ holes is called the _______________.

Accepted Answer

The answer of A breeze of low-density ionized gas that...

Question 6

What evidence do we have that the sunspots are magnetic

Accepted Answer

Astronomers measure magnetic fields on t

Question 7

Why is the solar limb darker than the center

Accepted Answer

A) The limb is cooler. 
B) The limb is in a shadow. 
C) Light has more atmosphere to travel through and thus more light is absorbed or scattered from your line of sight. 
D) None of the other choices are correct. 
A) The limb is cooler. 
B) The limb is in a shadow. 
C) Light has more atmosphere to travel through and thus more light is absorbed or scattered from your line of sight. 
D) None of the other choices are correct.

Question 8

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 9

If one kilogram of hydrogen is converted to helium, how much energy will be generated

Accepted Answer

A) $9 × 10^{16}$ J 
B) $3 × 10^8 $J 
C) $6.3 × 10^{14}$ J 
D) $2.2 × 10^6$ J 
E) $3.2 × 10^7$ J 
A) $9 × 10^{16}$ J 
B) $3 × 10^8 $J 
C) $6.3 × 10^{14}$ J 
D) $2.2 × 10^6$ J 
E) $3.2 × 10^7$ J

Question 10

How long do sunspots typically last Choose the best answer.

Accepted Answer

A) an hour 
B) a day 
C) a week 
D) two weeks or a fortnight 
A) an hour 
B) a day 
C) a week 
D) two weeks or a fortnight

Question 11

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 12

In the third step of the p-p fusion chain, a _____________ is fused with a _______________ to generate a ________________ with _____________ and _______________ as byproducts.

Accepted Answer

light helium, light helium, no

Question 13

The solar constant is a measure of

Accepted Answer

A) the amount of solar energy reaching 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 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 14

How did measurements of neutrinos from the Sun pose a problem for modern astronomy and how was it resolved

Accepted Answer

Measurements showed that only one-third

Question 15

_______________ is to the Sun as ____________ is to Earth.

Accepted Answer

A) Asteroseismology, geology 
B) Helioseismology, seismology 
C) Seismology, volcanology 
D) Astrology, astrobiology 
A) Asteroseismology, geology 
B) Helioseismology, seismology 
C) Seismology, volcanology 
D) Astrology, astrobiology

Question 16

A neutrino is ______________.

Accepted Answer

A) a photon of light 
B) a positively charged particle 
C) a subatomic particle 
D) a negatively charged particle 
A) a photon of light 
B) a positively charged particle 
C) a subatomic particle 
D) a negatively charged particle

Question 17

The Babcock model employs differential rotation of the solar surface and a magnetic dynamo to describe the formation of sunspots.

Accepted Answer

A) True 
 B)False

Question 18

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

Question 19

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 20

The chromosphere of the Sun has a higher temperature than the photosphere.

Accepted Answer

A) True 
 B)False

If a sunspot has a temperature of 4,500 K and the surrounding solar surface has a temperature of 5,800 K, how many times brighter is the surface compared to the sunspot

The Sun's magnetic field is highlighted by the visible arches of prominences.

A recent sunspot maximum occurred in 2013. What is the year of the sunspot maximum that immediately follows the 2013 maximum if the solar cycle continues

________ 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.

A breeze of low-density ionized gas that streams away from the Sun through _ holes is called the _.

What evidence do we have that the sunspots are magnetic

Why is the solar limb darker than the center

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

If one kilogram of hydrogen is converted to helium, how much energy will be generated

How long do sunspots typically last Choose the best answer.

In the third step of the p-p fusion chain, a _____ is fused with a _ to generate a ____ with _ and _________ as byproducts.

The solar constant is a measure of

How did measurements of neutrinos from the Sun pose a problem for modern astronomy and how was it resolved

___ is to the Sun as is to Earth.

A neutrino is ______________.

The Babcock model employs differential rotation of the solar surface and a magnetic dynamo to describe the formation of sunspots.

The energy generated by the Sun is released by the _ to make _ nuclei.

Fusion is promoted in the core of the Sun by the _______ there.

The chromosphere of the Sun has a higher temperature than the photosphere.

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

The Origin of the Solar System

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

Exam 7: The Sun

If a sunspot has a temperature of 4,500 K and the surrounding solar surface has a temperature of 5,800 K, how many times brighter is the surface compared to the sunspot

The Sun's magnetic field is highlighted by the visible arches of prominences.

A recent sunspot maximum occurred in 2013. What is the year of the sunspot maximum that immediately follows the 2013 maximum if the solar cycle continues

________ 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.

A breeze of low-density ionized gas that streams away from the Sun through _______________ holes is called the _______________.

What evidence do we have that the sunspots are magnetic

Why is the solar limb darker than the center

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

If one kilogram of hydrogen is converted to helium, how much energy will be generated

How long do sunspots typically last Choose the best answer.

In the third step of the p-p fusion chain, a _____________ is fused with a _______________ to generate a ________________ with _____________ and _______________ as byproducts.

The solar constant is a measure of

How did measurements of neutrinos from the Sun pose a problem for modern astronomy and how was it resolved

_______________ is to the Sun as ____________ is to Earth.

A neutrino is ______________.

The Babcock model employs differential rotation of the solar surface and a magnetic dynamo to describe the formation of sunspots.

The energy generated by the Sun is released by the _______ to make _______ nuclei.

Fusion is promoted in the core of the Sun by the _______ there.

The chromosphere of the Sun has a higher temperature than the photosphere.

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

The Origin of the Solar System

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

A breeze of low-density ionized gas that streams away from the Sun through _ holes is called the _.

In the third step of the p-p fusion chain, a _____ is fused with a _ to generate a ____ with _ and _________ as byproducts.

___ is to the Sun as is to Earth.

The energy generated by the Sun is released by the _ to make _ nuclei.