Question 1

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 2

Why DON'T we see hydrogen Balmer lines in the spectra of stars with temperatures of 3200 K?

Accepted Answer

A) These stars are so hot that most of the hydrogen is ionized and the atoms cannot absorb energy. 
B) These stars are so cool that nearly all of the electrons in the hydrogen atom are in the ground state. 
C) Stars of this temperature are too cool to produce an absorption spectrum. 
D) Stars of this temperature are too hot to produce an absorption spectrum. 
A) These stars are so hot that most of the hydrogen is ionized and the atoms cannot absorb energy. 
B) These stars are so cool that nearly all of the electrons in the hydrogen atom are in the ground state. 
C) Stars of this temperature are too cool to produce an absorption spectrum. 
D) Stars of this temperature are too hot to produce an absorption spectrum.

Question 3

What causes an atom to become excited?

Accepted Answer

A) emitting a photon 
B) colliding with another atom or electron 
C) reflecting a photon 
D) gaining an extra electron 
A) emitting a photon 
B) colliding with another atom or electron 
C) reflecting a photon 
D) gaining an extra electron

Question 4

-The diagram shows a plot of the temperature of the Sun as a function of distance above the bottom of the photosphere.At what distance above the bottom of the photosphere does the temperature of the Sun change the most rapidly with distance?

Accepted Answer

A) 400 km 
B) 1,000 km 
C) 2,300 km 
D) 2,500 km to 4,000 km 
A) 400 km 
B) 1,000 km 
C) 2,300 km 
D) 2,500 km to 4,000 km

Question 5

What makes up the neutral hydrogen atom?

Accepted Answer

A) one proton and one neutron 
B) one proton 
C) one proton, one neutron, and one electron 
D) one proton and one electron 
A) one proton and one neutron 
B) one proton 
C) one proton, one neutron, and one electron 
D) one proton and one electron

Question 6

What is the lowest energy level in an atom called?

Accepted Answer

A) the absolute zero temperature 
B) the ground state 
C) the ionization level 
D) the energy level from which the Paschen series of hydrogen originates 
A) the absolute zero temperature 
B) the ground state 
C) the ionization level 
D) the energy level from which the Paschen series of hydrogen originates

Question 7

If you move an electron from a lower energy level to a higher energy level within an atom,how would you describe that atom?

Accepted Answer

A) The atom is ionized. 
B) The atom is dissociated. 
C) The atom is excited. 
D) The atom is neutralized. 
A) The atom is ionized. 
B) The atom is dissociated. 
C) The atom is excited. 
D) The atom is neutralized.

Question 8

What is the definition of Absolute Zero?

Accepted Answer

A) zero degrees Celsius 
B) the temperature at which no thermal energy can be extracted from atoms 
C) the temperature at which water freezes 
D) the temperature at which molecules split into atoms 
A) zero degrees Celsius 
B) the temperature at which no thermal energy can be extracted from atoms 
C) the temperature at which water freezes 
D) the temperature at which molecules split into atoms

Question 9

What does granulation tell us about the layers below the Sun's photosphere?

Accepted Answer

Granulation on the Sun's surface is a vi

Question 10

-The diagram illustrates a light source,a gas cloud,and three different lines of sight (the observer is located at the numbered positions).Along which line of sight would an observer see an absorption spectrum?

Accepted Answer

A) 1 
B) 2 
C) 3 
A) 1 
B) 2 
C) 3

Question 11

Which of the following coincided with the period known as the "little ice age" of Europe and North America?

Accepted Answer

A) Maunder sunspot minimum 
B) Babcock sunspot model 
C) coronal hole 
D) weak solar force 
A) Maunder sunspot minimum 
B) Babcock sunspot model 
C) coronal hole 
D) weak solar force

Question 12

A filtergram is used to study layers below the photosphere.

Accepted Answer

A) True 
 B)False

Question 13

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 as the distance from the photosphere increases that produces the changes in the flash spectrum?

Accepted Answer

A) temperature and density both decrease 
B) temperature decreases and density increases 
C) temperature increases and density decreases 
D) temperature and density both increase 
A) temperature and density both decrease 
B) temperature decreases and density increases 
C) temperature increases and density decreases 
D) temperature and density both increase

Question 14

The most abundant element in the Sun is oxygen.

Accepted Answer

A) True 
 B)False

Question 15

What evidence do we have that the sunspots are magnetic?

Accepted Answer

The answer of What evidence do we have that the...

Question 16

The Stefan-Boltzmann law says that hot objects emit energy proportional to the fourth power of their temperature.One star has a temperature of 30,000 K and another star has a temperature of 6,000 K.Compared to the cooler star,how much more energy per second will the hotter star radiate from each square metre of its surface?

Accepted Answer

A) 5 times 
B) 25 times 
C) 625 times 
D) 1.3×10¹⁵ times 
A) 5 times 
B) 25 times 
C) 625 times 
D) 1.3×10¹⁵ times

Question 17

What pattern of movement is found in the rotation of the Sun's photosphere?

Accepted Answer

A) fastest at the equator, slower at mid-latitudes, and slowest near the poles 
B) slowest at the equator, faster at mid-latitudes, and fastest near the poles 
C) fastest at the equator, and slowest at mid-latitudes and the poles, which travel at the same speed 
D) the same regardless of latitude 
A) fastest at the equator, slower at mid-latitudes, and slowest near the poles 
B) slowest at the equator, faster at mid-latitudes, and fastest near the poles 
C) fastest at the equator, and slowest at mid-latitudes and the poles, which travel at the same speed 
D) the same regardless of latitude

Question 18

The Sun contains a lot of hot gas,so why do we observe an absorption spectrum rather than an emission spectrum from it?

Accepted Answer

A) The ionized gas in the photosphere emits a continuous spectrum, which the chromosphere changes into an absorption spectrum. 
B) The ionized gas in the photosphere emits an absorption spectrum. 
C) The Sun's photosphere is cooler than the layers below it. 
D) The Sun's photosphere is hotter than the layers below it. 
A) The ionized gas in the photosphere emits a continuous spectrum, which the chromosphere changes into an absorption spectrum. 
B) The ionized gas in the photosphere emits an absorption spectrum. 
C) The Sun's photosphere is cooler than the layers below it. 
D) The Sun's photosphere is hotter than the layers below it.

Question 19

How is it possible that you could fly a very-well-insulated spaceship through the Sun's photosphere?

Accepted Answer

A) The photosphere is less than 500 km deep. 
B) The photosphere is made of hydrogen gas. 
C) The photosphere has a very low temperature. 
D) The photosphere has a very low density. 
A) The photosphere is less than 500 km deep. 
B) The photosphere is made of hydrogen gas. 
C) The photosphere has a very low temperature. 
D) The photosphere has a very low density.

Question 20

Which of the following occur when energy in the solar wind guided by the Earth's magnetic field excites gases in the Earth's upper atmosphere?

Accepted Answer

A) coronas 
B) flares 
C) auroras 
D) coronal holes 
A) coronas 
B) flares 
C) auroras 
D) coronal holes

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

Why DON'T we see hydrogen Balmer lines in the spectra of stars with temperatures of 3200 K?

What causes an atom to become excited?

-The diagram shows a plot of the temperature of the Sun as a function of distance above the bottom of the photosphere.At what distance above the bottom of the photosphere does the temperature of the Sun change the most rapidly with distance?

What makes up the neutral hydrogen atom?

What is the lowest energy level in an atom called?

If you move an electron from a lower energy level to a higher energy level within an atom,how would you describe that atom?

What is the definition of Absolute Zero?

What does granulation tell us about the layers below the Sun's photosphere?

-The diagram illustrates a light source,a gas cloud,and three different lines of sight (the observer is located at the numbered positions).Along which line of sight would an observer see an absorption spectrum?

Which of the following coincided with the period known as the "little ice age" of Europe and North America?

A filtergram is used to study layers below the photosphere.

The most abundant element in the Sun is oxygen.

What evidence do we have that the sunspots are magnetic?

What pattern of movement is found in the rotation of the Sun's photosphere?

The Sun contains a lot of hot gas,so why do we observe an absorption spectrum rather than an emission spectrum from it?

How is it possible that you could fly a very-well-insulated spaceship through the Sun's photosphere?

Which of the following occur when energy in the solar wind guided by the Earth's magnetic field excites gases in the Earth's upper atmosphere?

The Scale of the Cosmos

User's Guide to the Sky

The Origin of Modern Astronomy

Astronomical Telescopes and Instruments

The Family of Stars

The Structure and Formation of Stars

The Deaths of Stars

The Milky Way Galaxy

Galaxies

Cosmology in the 21st Century

The Origin of the Solar System

Comparative Planetology of the Terrestrial Planets

Comparative Planetology of the Jovian Planets

Life on Other Worlds

Filters

Exam 5: Sun Light and Sun Atoms

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

Why DON'T we see hydrogen Balmer lines in the spectra of stars with temperatures of 3200 K?

What causes an atom to become excited?

-The diagram shows a plot of the temperature of the Sun as a function of distance above the bottom of the photosphere.At what distance above the bottom of the photosphere does the temperature of the Sun change the most rapidly with distance?

What makes up the neutral hydrogen atom?

What is the lowest energy level in an atom called?

If you move an electron from a lower energy level to a higher energy level within an atom,how would you describe that atom?

What is the definition of Absolute Zero?

What does granulation tell us about the layers below the Sun's photosphere?

-The diagram illustrates a light source,a gas cloud,and three different lines of sight (the observer is located at the numbered positions).Along which line of sight would an observer see an absorption spectrum?

Which of the following coincided with the period known as the "little ice age" of Europe and North America?

A filtergram is used to study layers below the photosphere.

The most abundant element in the Sun is oxygen.

What evidence do we have that the sunspots are magnetic?

What pattern of movement is found in the rotation of the Sun's photosphere?

The Sun contains a lot of hot gas,so why do we observe an absorption spectrum rather than an emission spectrum from it?

How is it possible that you could fly a very-well-insulated spaceship through the Sun's photosphere?

Which of the following occur when energy in the solar wind guided by the Earth's magnetic field excites gases in the Earth's upper atmosphere?

The Scale of the Cosmos

User's Guide to the Sky

The Origin of Modern Astronomy

Astronomical Telescopes and Instruments

The Family of Stars

The Structure and Formation of Stars

The Deaths of Stars

The Milky Way Galaxy

Galaxies

Cosmology in the 21st Century

The Origin of the Solar System

Comparative Planetology of the Terrestrial Planets

Comparative Planetology of the Jovian Planets

Life on Other Worlds

Filters