Question 1

If the radial velocity of a star is positive, the star is moving _________________ you.

Accepted Answer

A)  parallel to 
B)  away from 
C)  towards 
D)  in circles around 
A)  parallel to 
B)  away from 
C)  towards 
D)  in circles around B

Question 2

I.  
II)  
III)    
Which spectra, and in which order, would you expect to generate the pink color in the above cloud of gas?

Accepted Answer

A)  II then III 
B)  I then II then III 
C)  III then II 
D)  III 
A)  II then III 
B)  I then II then III 
C)  III then II 
D)  III D

Question 3

You are standing near a railroad track and a train is moving toward you at 60 mph and blowing its horn. What will you notice as the train moves past you?

Accepted Answer

A)  As the train approaches, the horn will sound lower in pitch than when the train is moving away. 
B)  As the train approaches, the horn will sound higher in pitch than when the train is moving away. 
C)  There will be no change in the pitch of the horn as it moves by. 
D)  The horn will get louder as the train moves away from you. 
E)  The horn will get quieter as the train moves toward you. 
A)  As the train approaches, the horn will sound lower in pitch than when the train is moving away. 
B)  As the train approaches, the horn will sound higher in pitch than when the train is moving away. 
C)  There will be no change in the pitch of the horn as it moves by. 
D)  The horn will get louder as the train moves away from you. 
E)  The horn will get quieter as the train moves toward you. B

Question 4

The nucleus is made of ____

Accepted Answer

A)  electrons only. 
B)  protons only. 
C)  neutrons only. 
D)  electrons and protons, usually. 
E)  protons and neutrons, usually. 
A)  electrons only. 
B)  protons only. 
C)  neutrons only. 
D)  electrons and protons, usually. 
E)  protons and neutrons, usually.

Question 5

Which one of the hydrogen atoms below is EMITTING light at a wavelength in the Balmer series?

Accepted Answer

A)  second energy level to first (most bound) 
B)  third energy level to second 
C)  fourth energy level to third 
D)  second energy level to third 
E)  first energy level to second 
A)  second energy level to first (most bound) 
B)  third energy level to second 
C)  fourth energy level to third 
D)  second energy level to third 
E)  first energy level to second

Question 6

Diagram 6-2  
Diagram 6-2 illustrates a light source, a gas cloud, and three different lines of sight. Along which line of sight would an observer see an emission spectrum?

Accepted Answer

A)  1 
B)  2 
C)  3 
D)  2 and 3 
E)  none of them 
A)  1 
B)  2 
C)  3 
D)  2 and 3 
E)  none of them

Question 7

The process of making an electron less tightly bound to an atom's nucleus is known as

Accepted Answer

A)  excitation. 
B)  Doppler broadening. 
C)  collisional broadening. 
D)  a red shift. 
E)  quantum mechanics. 
A)  excitation. 
B)  Doppler broadening. 
C)  collisional broadening. 
D)  a red shift. 
E)  quantum mechanics.

Question 8

____________________ is a measure of the amount of energy due to the motion of the particles in a gas, liquid, or solid.

Accepted Answer

The answer of ____________________ is a measure of the amount...

Question 9

Diagram 6-2  
Diagram 6-2 illustrates a light source, a gas cloud, and three different lines of sight. Along which line of sight would an observer see a continuous spectrum?

Accepted Answer

A)  1 
B)  2 
C)  3 
D)  2 and 3 
E)  none of them 
A)  1 
B)  2 
C)  3 
D)  2 and 3 
E)  none of them

Question 10

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

Accepted Answer

We would see many more lines,

Question 11

Which spectrum is shown above?

Accepted Answer

A)  emission 
B)  absorption 
C)  continuous 
D)  blackbody 
A)  emission 
B)  absorption 
C)  continuous 
D)  blackbody

Question 12

A neutral atom always contains

Accepted Answer

A)  the same number of protons as it does neutrons. 
B)  the same number of electrons as it does neutrons. 
C)  the same number of protons as it does electrons. 
D)  twice as many protons as it does neutrons. 
E)  twice as many neutrons as it does protons. 
A)  the same number of protons as it does neutrons. 
B)  the same number of electrons as it does neutrons. 
C)  the same number of protons as it does electrons. 
D)  twice as many protons as it does neutrons. 
E)  twice as many neutrons as it does protons.

Question 13

What holds the electron to the nucleus of an atom?

Accepted Answer

A)  Coulomb force 
B)  binding energy 
C)  thermal energy 
D)  heat 
A)  Coulomb force 
B)  binding energy 
C)  thermal energy 
D)  heat

Question 14

What kind of spectra is shown above?

Accepted Answer

A)  continuous 
B)  blackbody 
C)  emission 
D)  absorption 
A)  continuous 
B)  blackbody 
C)  emission 
D)  absorption

Question 15

The figure shows a color image of Betelgeuse, a red giant star. Which of the surface temperatures below best matches Betelgeuse's surface temperature? Hint: Our Sun at 6000 K is yellow.

Accepted Answer

A)  64,000 K 
B)  32,000 K 
C)  16,000 K 
D)  8000 K 
E)  2000 K 
A)  64,000 K 
B)  32,000 K 
C)  16,000 K 
D)  8000 K 
E)  2000 K

Question 16

Which spectrum is shown above?

Accepted Answer

A)  continuous 
B)  emission 
C)  absorption 
D)  blackbody 
A)  continuous 
B)  emission 
C)  absorption 
D)  blackbody

Question 17

Red and blue in redshift and blueshift refer to color.

Accepted Answer

A) True 
 B)False

Question 18

The Doppler effect is sensitive only to motion along the line of sight.

Accepted Answer

A) True 
 B)False

Question 19

The wavelength of the hydrogen line from level 1 to level 2 in a hot star is ____________ the wavelength of the same line in a cool star. The stars have the same radial velocities away from Earth.

Accepted Answer

A)  larger than 
B)  the same as 
C)  smaller than 
D)  not enough information to answer 
A)  larger than 
B)  the same as 
C)  smaller than 
D)  not enough information to answer

Question 20

The peak wavelength in the continuous emission spectrum of a body is inversely proportional to its ____________________.

Accepted Answer

The answer of The peak wavelength in the continuous emission...

If the radial velocity of a star is positive, the star is moving _________________ you.

I. II) III) Which spectra, and in which order, would you expect to generate the pink color in the above cloud of gas?

You are standing near a railroad track and a train is moving toward you at 60 mph and blowing its horn. What will you notice as the train moves past you?

The nucleus is made of ____

Which one of the hydrogen atoms below is EMITTING light at a wavelength in the Balmer series?

Diagram 6-2 Diagram 6-2 illustrates a light source, a gas cloud, and three different lines of sight. Along which line of sight would an observer see an emission spectrum?

The process of making an electron less tightly bound to an atom's nucleus is known as

____________________ is a measure of the amount of energy due to the motion of the particles in a gas, liquid, or solid.

Diagram 6-2 Diagram 6-2 illustrates a light source, a gas cloud, and three different lines of sight. Along which line of sight would an observer see a continuous spectrum?

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

Which spectrum is shown above?

A neutral atom always contains

What holds the electron to the nucleus of an atom?

What kind of spectra is shown above?

The figure shows a color image of Betelgeuse, a red giant star. Which of the surface temperatures below best matches Betelgeuse's surface temperature? Hint: Our Sun at 6000 K is yellow.

Which spectrum is shown above?

Red and blue in redshift and blueshift refer to color.

The Doppler effect is sensitive only to motion along the line of sight.

The wavelength of the hydrogen line from level 1 to level 2 in a hot star is ____________ the wavelength of the same line in a cool star. The stars have the same radial velocities away from Earth.

The peak wavelength in the continuous emission spectrum of a body is inversely proportional to its ____________________.

Here and Now

A Users Guide to the Sky

Cycles of the Sun and Moon

The Origin of Modern Astronomy

Light and Telescopes

The Sun

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

Exam 6: Atoms and Spectra

If the radial velocity of a star is positive, the star is moving _________________ you.

I. II) III) Which spectra, and in which order, would you expect to generate the pink color in the above cloud of gas?

You are standing near a railroad track and a train is moving toward you at 60 mph and blowing its horn. What will you notice as the train moves past you?

The nucleus is made of ____

Which one of the hydrogen atoms below is EMITTING light at a wavelength in the Balmer series?

Diagram 6-2 Diagram 6-2 illustrates a light source, a gas cloud, and three different lines of sight. Along which line of sight would an observer see an emission spectrum?

The process of making an electron less tightly bound to an atom's nucleus is known as

____________________ is a measure of the amount of energy due to the motion of the particles in a gas, liquid, or solid.

Diagram 6-2 Diagram 6-2 illustrates a light source, a gas cloud, and three different lines of sight. Along which line of sight would an observer see a continuous spectrum?

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

Which spectrum is shown above?

A neutral atom always contains

What holds the electron to the nucleus of an atom?

What kind of spectra is shown above?

The figure shows a color image of Betelgeuse, a red giant star. Which of the surface temperatures below best matches Betelgeuse's surface temperature? Hint: Our Sun at 6000 K is yellow.

Which spectrum is shown above?

Red and blue in redshift and blueshift refer to color.

The Doppler effect is sensitive only to motion along the line of sight.

The wavelength of the hydrogen line from level 1 to level 2 in a hot star is ____________ the wavelength of the same line in a cool star. The stars have the same radial velocities away from Earth.

The peak wavelength in the continuous emission spectrum of a body is inversely proportional to its ____________________.

Here and Now

A Users Guide to the Sky

Cycles of the Sun and Moon

The Origin of Modern Astronomy

Light and Telescopes

The Sun

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