Question 1

The most massive part of the atom is(are) the ____ which has(have) a ____ charge.

Accepted Answer

A) electrons; negative 
B) nucleus; negative 
C) electrons; positive 
D) nucleus; positive 
A) electrons; negative 
B) nucleus; negative 
C) electrons; positive 
D) nucleus; positive D

Question 2

Bluer stars are brighter than redder stars of the same size. Assume both are typical stars.

Accepted Answer

A) True 
 B)False  True

Question 3

If a star is moving ____________ from us, then its spectra will be shifted toward ________ wavelengths, producing a redshift.

Accepted Answer

away, longer

Question 4

-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 5

The higher the surface temperature of the star, the _______________ the wavelength of maximum intensity and the ____________ total radiation emitted from surface per second.

Accepted Answer

A) lower, less 
B) higher, more 
C) lower, more 
D) higher, less 
A) lower, less 
B) higher, more 
C) lower, more 
D) higher, less

Question 6

-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 7

A 50-K dense cloud is a blackbody.

Accepted Answer

A) True 
 B)False

Question 8

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 meter of its surface

Accepted Answer

A) 5 times 
B) 25 times 
C) $8.1 × 10^{17}$ times 
D) 625 times 
E) $1.3 × 10^{15}$ times 
A) 5 times 
B) 25 times 
C) $8.1 × 10^{17}$ times 
D) 625 times 
E) $1.3 × 10^{15}$ times

Question 9

Which spectrum is shown above

Accepted Answer

A) emission 
B) absorption 
C) blackbody 
D) None of the other choices are correct. 
A) emission 
B) absorption 
C) blackbody 
D) None of the other choices are correct.

Question 10

Which spectrum is shown above

Accepted Answer

A) continuous 
B) emission 
C) absorption 
D) All of the other choices are correct. 
A) continuous 
B) emission 
C) absorption 
D) All of the other choices are correct.

Question 11

If you move an electron in an atom from a low energy level to a higher energy level within the atom, we say that the atom is

Accepted Answer

A) in the ground state. 
B) ionized. 
C) dissociated. 
D) in an excited state. 
E) neutralized. 
A) in the ground state. 
B) ionized. 
C) dissociated. 
D) in an excited state. 
E) neutralized.

Question 12

-Which spectra, and in which order, would you expect to generate the pink color in the following 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

Question 13

-In Diagram 6-1, which of the transitions would absorb a photon with the greatest energy

Accepted Answer

A) Transition 1 
B) Transition 2 
C) Transition 3 
D) Transition 4 
E) Transition 5 
A) Transition 1 
B) Transition 2 
C) Transition 3 
D) Transition 4 
E) Transition 5

Question 14

An excited atom lost an electron from the atom to its surroundings.

Accepted Answer

A) True 
 B)False

Question 15

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

Accepted Answer

The answer of The process of removing an electron from...

Question 16

-In Diagram 6-1, which of the transitions would absorb a photon with the smallest energy

Accepted Answer

A) Transition 1 
B) Transition 2 
C) Transition 3 
D) Transition 4 
E) Transition 5 
A) Transition 1 
B) Transition 2 
C) Transition 3 
D) Transition 4 
E) Transition 5

Question 17

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 18

Which property does color best represent

Accepted Answer

A) velocity 
B) thermal energy 
C) temperature 
D) heat 
A) velocity 
B) thermal energy 
C) temperature 
D) heat

Question 19

At what wavelength would a star radiate the greatest amount of energy if the star has a surface temperature of 60,000 K

Accepted Answer

A) 50 nm 
B) 500 nm 
C) 300 nm 
D) 1.8 × 1011 nm 
E) 180 nm 
A) 50 nm 
B) 500 nm 
C) 300 nm 
D) 1.8 × 1011 nm 
E) 180 nm

Question 20

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.

The most massive part of the atom is(are) the which has(have) a charge.

Bluer stars are brighter than redder stars of the same size. Assume both are typical stars.

If a star is moving ____ from us, then its spectra will be shifted toward wavelengths, producing a redshift.

-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 higher the surface temperature of the star, the ___ the wavelength of maximum intensity and the total radiation emitted from surface per second.

-What kind of spectra is shown above

A 50-K dense cloud is a blackbody.

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 meter of its surface

Which spectrum is shown above

Which spectrum is shown above

If you move an electron in an atom from a low energy level to a higher energy level within the atom, we say that the atom is

-Which spectra, and in which order, would you expect to generate the pink color in the following cloud of gas ?

-In Diagram 6-1, which of the transitions would absorb a photon with the greatest energy

An excited atom lost an electron from the atom to its surroundings.

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

-In Diagram 6-1, which of the transitions would absorb a photon with the smallest energy

The nucleus is made of ____

Which property does color best represent

At what wavelength would a star radiate the greatest amount of energy if the star has a surface temperature of 60,000 K

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

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

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Exam 6: Atoms and Spectra

The most massive part of the atom is(are) the ____ which has(have) a ____ charge.

Bluer stars are brighter than redder stars of the same size. Assume both are typical stars.

If a star is moving ____________ from us, then its spectra will be shifted toward ________ wavelengths, producing a redshift.

-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 higher the surface temperature of the star, the _______________ the wavelength of maximum intensity and the ____________ total radiation emitted from surface per second.

-What kind of spectra is shown above

A 50-K dense cloud is a blackbody.

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 meter of its surface

Which spectrum is shown above

Which spectrum is shown above

If you move an electron in an atom from a low energy level to a higher energy level within the atom, we say that the atom is

-Which spectra, and in which order, would you expect to generate the pink color in the following cloud of gas ?

-In Diagram 6-1, which of the transitions would absorb a photon with the greatest energy

An excited atom lost an electron from the atom to its surroundings.

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

-In Diagram 6-1, which of the transitions would absorb a photon with the smallest energy

The nucleus is made of ____

Which property does color best represent

At what wavelength would a star radiate the greatest amount of energy if the star has a surface temperature of 60,000 K

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

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 most massive part of the atom is(are) the which has(have) a charge.

If a star is moving ____ from us, then its spectra will be shifted toward wavelengths, producing a redshift.

The higher the surface temperature of the star, the ___ the wavelength of maximum intensity and the total radiation emitted from surface per second.