Question 1

Which of the following contains two or more atoms that are bound together by exchanging or sharing electrons with each other?

Accepted Answer

A) nucleus 
B) ion 
C) proton 
D) molecule 
A) nucleus 
B) ion 
C) proton 
D) molecule D

Question 2

Canada consumes about 2 ×10¹⁸ J of energy each year.A typical solar flare releases 5.0×10²⁴ J of energy.How many years could Canada run on the energy released by this solar flare,if all of the released energy could be used?

Accepted Answer

A) 4×10⁻⁷ years 
B) about 2 years 
C) 250 years 
D) 2,500,000 years 
A) 4×10⁻⁷ years 
B) about 2 years 
C) 250 years 
D) 2,500,000 years D

Question 3

Which of the following is a set of rules that describes how atoms and subatomic particles behave?

Accepted Answer

A) Kirchhoff's law 
B) the Coulomb force 
C) quantum mechanics 
D) the binding energy 
A) Kirchhoff's law 
B) the Coulomb force 
C) quantum mechanics 
D) the binding energy C

Question 4

What would the spectrum of hydrogen look like if we could see into the ultraviolet?

Accepted Answer

The answer of What would the spectrum of hydrogen look...

Question 5

Which of the following CANNOT be measured by using the Doppler Effect?

Accepted Answer

A) the speed at which a star is moving away from an observer 
B) the apparent velocity of a star across the sky 
C) the radial velocity of a star 
D) the speed at which a car is travelling toward an observer 
A) the speed at which a star is moving away from an observer 
B) the apparent velocity of a star across the sky 
C) the radial velocity of a star 
D) the speed at which a car is travelling toward an observer

Question 6

What is differential rotation of the Sun?

Accepted Answer

A) Heating in the chromosphere and corona makes them hotter than the photosphere. 
B) A magnetic dynamo operates inside the Sun. 
C) The equatorial regions of the Sun rotate more rapidly than the polar regions. 
D) The rotation of the Sun's southern and northern hemispheres goes in opposite directions. 
A) Heating in the chromosphere and corona makes them hotter than the photosphere. 
B) A magnetic dynamo operates inside the Sun. 
C) The equatorial regions of the Sun rotate more rapidly than the polar regions. 
D) The rotation of the Sun's southern and northern hemispheres goes in opposite directions.

Question 7

Why does a filtergram reveal details in higher layers of the solar atmosphere?

Accepted Answer

The answer of Why does a filtergram reveal details in...

Question 8

How can the density of the Sun be measured?

Accepted Answer

A) by using the density of hydrogen as measured on Earth 
B) by analysing samples of the solar wind 
C) by using the amount of area covered by Venus during a transit 
D) by using Newton's laws and the Sun's diameter 
A) by using the density of hydrogen as measured on Earth 
B) by analysing samples of the solar wind 
C) by using the amount of area covered by Venus during a transit 
D) by using Newton's laws and the Sun's diameter

Question 9

Hydrogen lines are weak in the spectra of hot stars because many of the hydrogen atoms are ionized.

Accepted Answer

A) True 
 B)False

Question 10

The Zeeman effect shows that sunspots contain magnetic fields.

Accepted Answer

A) True 
 B)False

Question 11

What is the process of removing an electron from a stable nucleus called?

Accepted Answer

A) ionization 
B) Doppler broadening 
C) collisional broadening 
D) a red shift 
A) ionization 
B) Doppler broadening 
C) collisional broadening 
D) a red shift

Question 12

What has a negative charge and a mass about 1800 times smaller than a proton?

Accepted Answer

A) a neutron 
B) an electron 
C) a molecule 
D) a nucleus 
A) a neutron 
B) an electron 
C) a molecule 
D) a nucleus

Question 13

What is the Babcock model?

Accepted Answer

The answer of What is the Babcock model?...

Question 14

How can the corona of the Sun be observed?

Accepted Answer

A) during a lunar eclipse 
B) with a coronagraph 
C) using filtergrams 
D) using the Zeeman effect 
A) during a lunar eclipse 
B) with a coronagraph 
C) using filtergrams 
D) using the Zeeman effect

Question 15

What state must an atom be in for it to emit a photon?

Accepted Answer

A) ionized 
B) excited 
C) ground 
D) isotopic 
A) ionized 
B) excited 
C) ground 
D) isotopic

Question 16

Describe the appearance of each of the three types of spectra described by Kirchhoff's laws.Describe how each of the three types of spectra is formed.

Accepted Answer

The answer of Describe the appearance of each of the...

Question 17

Why do molecular bands only occur in the spectra of the coolest stars?

Accepted Answer

The answer of Why do molecular bands only occur in...

Question 18

Which of the following is affected by the sunspot cycle?

Accepted Answer

A) the longitude at which most sunspots occur 
B) the number of sunspots that are visible 
C) the rotation rate of the Sun's equator 
D) the temperature of sunspot cores 
A) the longitude at which most sunspots occur 
B) the number of sunspots that are visible 
C) the rotation rate of the Sun's equator 
D) the temperature of sunspot cores

Question 19

Helioseismology is the study of the differential rotation and magnetic fields of the Sun.

Accepted Answer

A) True 
 B)False

Question 20

Where does most of the visible light we see coming from the Sun originate?

Accepted Answer

A) the chromosphere 
B) the photosphere 
C) the corona 
D) the sunspots 
A) the chromosphere 
B) the photosphere 
C) the corona 
D) the sunspots

Which of the following contains two or more atoms that are bound together by exchanging or sharing electrons with each other?

Canada consumes about 2 ×10¹⁸ J of energy each year.A typical solar flare releases 5.0×10²⁴ J of energy.How many years could Canada run on the energy released by this solar flare,if all of the released energy could be used?

Which of the following is a set of rules that describes how atoms and subatomic particles behave?

What would the spectrum of hydrogen look like if we could see into the ultraviolet?

Which of the following CANNOT be measured by using the Doppler Effect?

What is differential rotation of the Sun?

Why does a filtergram reveal details in higher layers of the solar atmosphere?

How can the density of the Sun be measured?

Hydrogen lines are weak in the spectra of hot stars because many of the hydrogen atoms are ionized.

The Zeeman effect shows that sunspots contain magnetic fields.

What is the process of removing an electron from a stable nucleus called?

What has a negative charge and a mass about 1800 times smaller than a proton?

What is the Babcock model?

How can the corona of the Sun be observed?

What state must an atom be in for it to emit a photon?

Describe the appearance of each of the three types of spectra described by Kirchhoff's laws.Describe how each of the three types of spectra is formed.

Why do molecular bands only occur in the spectra of the coolest stars?

Which of the following is affected by the sunspot cycle?

Helioseismology is the study of the differential rotation and magnetic fields of the Sun.

Where does most of the visible light we see coming from the Sun originate?

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

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Exam 5: Sun Light and Sun Atoms

Which of the following contains two or more atoms that are bound together by exchanging or sharing electrons with each other?

Canada consumes about 2 ×10¹⁸ J of energy each year.A typical solar flare releases 5.0×10²⁴ J of energy.How many years could Canada run on the energy released by this solar flare,if all of the released energy could be used?

Which of the following is a set of rules that describes how atoms and subatomic particles behave?

What would the spectrum of hydrogen look like if we could see into the ultraviolet?

Which of the following CANNOT be measured by using the Doppler Effect?

What is differential rotation of the Sun?

Why does a filtergram reveal details in higher layers of the solar atmosphere?

How can the density of the Sun be measured?

Hydrogen lines are weak in the spectra of hot stars because many of the hydrogen atoms are ionized.

The Zeeman effect shows that sunspots contain magnetic fields.

What is the process of removing an electron from a stable nucleus called?

What has a negative charge and a mass about 1800 times smaller than a proton?

What is the Babcock model?

How can the corona of the Sun be observed?

What state must an atom be in for it to emit a photon?

Describe the appearance of each of the three types of spectra described by Kirchhoff's laws.Describe how each of the three types of spectra is formed.

Why do molecular bands only occur in the spectra of the coolest stars?

Which of the following is affected by the sunspot cycle?

Helioseismology is the study of the differential rotation and magnetic fields of the Sun.

Where does most of the visible light we see coming from the Sun originate?

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