Question 1

The process of removing an electron from a stable nucleus is known as ____________________.

Accepted Answer

ionization

Question 2

Figure 6-1  
-A plot of the continuous spectra of five different stars is shown in Figure 6-1. Based on these spectra, which of the stars has the lowest temperature?

Accepted Answer

A)  Star A 
B)  Star B 
C)  Star C 
D)  Star D 
E)  Star E 
A)  Star A 
B)  Star B 
C)  Star C 
D)  Star D 
E)  Star E E

Question 3

The temperature of an object from which no heat energy can be extracted is

Accepted Answer

A)  0 $\degree$ F. 
B)  0 $\degree$C. 
C)  0 K. 
D)  100 K. 
E)  100 $\degree$ C. 
A)  0 $\degree$ F. 
B)  0 $\degree$C. 
C)  0 K. 
D)  100 K. 
E)  100 $\degree$ C. C

Question 4

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 absorption 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 5

An atom that has lost an electron is called an ion.

Accepted Answer

A) True 
 B)False

Question 6

The binding energy of the first level in an atom is 2.2*10-18 J, and the binding energy of the second energy level is 1.6*10-18 J. What is the energy of the photon that is emitted if an electron moves from the second level to the first?

Accepted Answer

A)  3.3*10-18 J 
B)  3.5*10-36 J 
C)  1.4 J 
D)  3.5*10-18 J 
E)  6.0*10-19 J 
A)  3.3*10-18 J 
B)  3.5*10-36 J 
C)  1.4 J 
D)  3.5*10-18 J 
E)  6.0*10-19 J

Question 7

The ____________________ of a star can be determined from its color.

Accepted Answer

The answer of The ____________________ of a star can be...

Question 8

Blue stars are hotter than red stars.

Accepted Answer

A) True 
 B)False

Question 9

Two white dwarf stars are the same size, but one has a surface temperature twice as hot as the other. The hotter star will radiate

Accepted Answer

A)  half as much energy per second as the cooler star. 
B)  the same amount of energy per second as the cooler star. 
C)  four times as much energy per second as the cooler star. 
D)  sixteen times as much energy per second as the cooler star. 
A)  half as much energy per second as the cooler star. 
B)  the same amount of energy per second as the cooler star. 
C)  four times as much energy per second as the cooler star. 
D)  sixteen times as much energy per second as the cooler star.

Question 10

Atoms that have the same number of protons but a different number of neutrons are called

Accepted Answer

A)  ions. 
B)  molecules 
C)  atomic pairs. 
D)  nuclear pairs. 
E)  isotopes. 
A)  ions. 
B)  molecules 
C)  atomic pairs. 
D)  nuclear pairs. 
E)  isotopes.

Question 11

Which of the following cannot be determined from the spectrum of a star?

Accepted Answer

A)  chemical composition 
B)  surface temperature 
C)  radial (along line of sight) velocity 
D)  tangential (perpendicular to line of sight) velocity 
E)  both c and d 
A)  chemical composition 
B)  surface temperature 
C)  radial (along line of sight) velocity 
D)  tangential (perpendicular to line of sight) velocity 
E)  both c and d

Question 12

If one star has a temperature of 4000 K and another star has a temperature of 40,000 K, how much more energy per second will the hotter star radiate from each square meter of its surface? ____________________

Accepted Answer

10,000 times
ten tho

Question 13

____ is a set of rules that describes how atoms and subatomic particles behave.

Accepted Answer

A)  Kirchhoff's law 
B)  Blackbody radiation law 
C)  The Coulomb force 
D)  Quantum mechanics 
E)  The binding energy 
A)  Kirchhoff's law 
B)  Blackbody radiation law 
C)  The Coulomb force 
D)  Quantum mechanics 
E)  The binding energy

Question 14

The radiation emitted from a star has a maximum intensity at a wavelength of 300 nm. What is the temperature of this star?

Accepted Answer

A)  300 K 
B)  100 K 
C)  900,000,000 K 
D)  90,000 K 
E)  10,000 K 
A)  300 K 
B)  100 K 
C)  900,000,000 K 
D)  90,000 K 
E)  10,000 K

Question 15

Which one of the hydrogen atoms below is EMITTING light? The electron jumps from the

Accepted Answer

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

Question 16

Which of the following is not a fundamental component of the atom?

Accepted Answer

A)  proton 
B)  neutron 
C)  ion 
D)  electron 
A)  proton 
B)  neutron 
C)  ion 
D)  electron

Question 17

An absorption spectrum is also called a bright-line spectrum.

Accepted Answer

A) True 
 B)False

Question 18

Why should photons emitted by a hotter gas have, on average, shorter wavelengths than photons emitted by a cooler gas?

Accepted Answer

The answer of Why should photons emitted by a hotter...

Question 19

The sun has a surface temperature of approximately 5800 K. At what wavelength does the maximum energy radiated by the sun occur?

Accepted Answer

A)  5800 nm 
B)  300 nm 
C)  174 nm 
D)  500 nm 
E)  3000 nm 
A)  5800 nm 
B)  300 nm 
C)  174 nm 
D)  500 nm 
E)  3000 nm

Question 20

The Lyman series lines of hydrogen all lie in the infrared.

Accepted Answer

A) True 
 B)False

The process of removing an electron from a stable nucleus is known as ____________________.

Figure 6-1 -A plot of the continuous spectra of five different stars is shown in Figure 6-1. Based on these spectra, which of the stars has the lowest temperature?

The temperature of an object from which no heat energy can be extracted is

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 absorption spectrum?

An atom that has lost an electron is called an ion.

The binding energy of the first level in an atom is 2.210^-¹⁸ J, and the binding energy of the second energy level is 1.610^-¹⁸ J. What is the energy of the photon that is emitted if an electron moves from the second level to the first?

The ____________________ of a star can be determined from its color.

Blue stars are hotter than red stars.

Two white dwarf stars are the same size, but one has a surface temperature twice as hot as the other. The hotter star will radiate

Atoms that have the same number of protons but a different number of neutrons are called

Which of the following cannot be determined from the spectrum of a star?

If one star has a temperature of 4000 K and another star has a temperature of 40,000 K, how much more energy per second will the hotter star radiate from each square meter of its surface? ____________________

____ is a set of rules that describes how atoms and subatomic particles behave.

The radiation emitted from a star has a maximum intensity at a wavelength of 300 nm. What is the temperature of this star?

Which one of the hydrogen atoms below is EMITTING light? The electron jumps from the

Which of the following is not a fundamental component of the atom?

An absorption spectrum is also called a bright-line spectrum.

Why should photons emitted by a hotter gas have, on average, shorter wavelengths than photons emitted by a cooler gas?

The sun has a surface temperature of approximately 5800 K. At what wavelength does the maximum energy radiated by the sun occur?

The Lyman series lines of hydrogen all lie in the infrared.

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

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 6: Atoms and Spectra

The process of removing an electron from a stable nucleus is known as ____________________.

Figure 6-1 -A plot of the continuous spectra of five different stars is shown in Figure 6-1. Based on these spectra, which of the stars has the lowest temperature?

The temperature of an object from which no heat energy can be extracted is

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 absorption spectrum?

An atom that has lost an electron is called an ion.

The binding energy of the first level in an atom is 2.2*10-18 J, and the binding energy of the second energy level is 1.6*10-18 J. What is the energy of the photon that is emitted if an electron moves from the second level to the first?

The ____________________ of a star can be determined from its color.

Blue stars are hotter than red stars.

Two white dwarf stars are the same size, but one has a surface temperature twice as hot as the other. The hotter star will radiate

Atoms that have the same number of protons but a different number of neutrons are called

Which of the following cannot be determined from the spectrum of a star?

If one star has a temperature of 4000 K and another star has a temperature of 40,000 K, how much more energy per second will the hotter star radiate from each square meter of its surface? ____________________

____ is a set of rules that describes how atoms and subatomic particles behave.

The radiation emitted from a star has a maximum intensity at a wavelength of 300 nm. What is the temperature of this star?

Which one of the hydrogen atoms below is EMITTING light? The electron jumps from the

Which of the following is not a fundamental component of the atom?

An absorption spectrum is also called a bright-line spectrum.

Why should photons emitted by a hotter gas have, on average, shorter wavelengths than photons emitted by a cooler gas?

The sun has a surface temperature of approximately 5800 K. At what wavelength does the maximum energy radiated by the sun occur?

The Lyman series lines of hydrogen all lie in the infrared.

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

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

The binding energy of the first level in an atom is 2.210^-¹⁸ J, and the binding energy of the second energy level is 1.610^-¹⁸ J. What is the energy of the photon that is emitted if an electron moves from the second level to the first?