Question 1

The flow of energy is always from hot to cold and is called ___________.

Accepted Answer

The answer of The flow of energy is always from...

Question 2

In the diagram below, draw the transition that would emit a photon with the shortest wavelength.

Accepted Answer

a line fro

Question 3

A(n) ____ 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) electron cloud 
E) molecule 
A) nucleus 
B) ion 
C) proton 
D) electron cloud 
E) molecule

Question 4

The Hδ line has a wavelength of 410.2 nm when observed in the laboratory. If the Hδ line appears in a stars spectrum at 410.0 nm, what is the radial velocity of the star

Accepted Answer

A) 146 km/s away from the observer 
B) 146 km/s toward the observer 
C) $6.0 × 10^7$ m/s away from the observer 
D) $6.0 × 10^7$ m/s toward the observer 
E) The radial velocity of the star cannot be determined from this information. 
A) 146 km/s away from the observer 
B) 146 km/s toward the observer 
C) $6.0 × 10^7$ m/s away from the observer 
D) $6.0 × 10^7$ m/s toward the observer 
E) The radial velocity of the star cannot be determined from this information.

Question 5

Blue stars emit most of their energy at shorter wavelengths than red stars.

Accepted Answer

A) True 
 B)False

Question 6

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.

Question 7

Each element has its own set of characteristic absorption lines because

Accepted Answer

A) the temperature of each element can varies. 
B) elements can exist in different forms of matter. 
C) electron energy levels differ for each element. 
D) each element has a different mass. 
E) absorption lines depend upon the speed of the object. 
A) the temperature of each element can varies. 
B) elements can exist in different forms of matter. 
C) electron energy levels differ for each element. 
D) each element has a different mass. 
E) absorption lines depend upon the speed of the object.

Question 8

______________ will give you information on the surface temperature of the star after you obtain the wavelength of maximum emission from the ________________ spectra.

Accepted Answer

Wien's Law

Question 9

The neutral hydrogen atom consists of

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. 
E) an isotope and an ion. 
A) one proton and one neutron. 
B) one proton. 
C) one proton, one neutron, and one electron. 
D) one proton and one electron. 
E) an isotope and an ion.

Question 10

Two or more bound atoms is called a ________________.

Accepted Answer

The answer of Two or more bound atoms is called...

Question 11

The Kelvin temperature scale is measured in degrees.

Accepted Answer

A) True 
 B)False

Question 12

The radiation emitted from a star has a maximum intensity at a wavelength of 500 nm. What is the temperature of this star

Accepted Answer

A) 6,000 K 
B) 5,000 K 
C) $1.5 × 10^9$ K 
D) 500 K 
E) 10,000 K 
A) 6,000 K 
B) 5,000 K 
C) $1.5 × 10^9$ K 
D) 500 K 
E) 10,000 K

Question 13

The Doppler effect states that the motion of any object can

Accepted Answer

A) shift the wavelength of spectral lines. 
B) change the speed of light emitted from the object. 
C) enhance the chemical composition of the object. 
D) make the object appear hotter. 
E) make the object appear cooler. 
A) shift the wavelength of spectral lines. 
B) change the speed of light emitted from the object. 
C) enhance the chemical composition of the object. 
D) make the object appear hotter. 
E) make the object appear cooler.

Question 14

The neutral carbon atom consists of

Accepted Answer

A) one proton and one neutron. 
B) six protons. 
C) one proton, one neutron, and one electron. 
D) six protons and six electrons. 
E) an isotope and an ion. 
A) one proton and one neutron. 
B) six protons. 
C) one proton, one neutron, and one electron. 
D) six protons and six electrons. 
E) an isotope and an ion.

Question 15

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 16

To create the above spectra, which of the following is NOT true

Accepted Answer

A) A dense gas is excited and the light produced is over all wavelengths. 
B) A low-density gas is excited and the light produced is over discrete wavelengths. 
C) Light from a low-density gas passes through a warm, dense gas and the light that is produced is at all wavelengths except for a few discrete wavelengths. 
D) All of the other choices are not true. 
A) A dense gas is excited and the light produced is over all wavelengths. 
B) A low-density gas is excited and the light produced is over discrete wavelengths. 
C) Light from a low-density gas passes through a warm, dense gas and the light that is produced is at all wavelengths except for a few discrete wavelengths. 
D) All of the other choices are not true.

Question 17

An atom gained an electron. Therefore it is now called an ion.

Accepted Answer

A) True 
 B)False

Question 18

A blackbody's emission as observed through a low-density gas will produce a ____________________ spectrum.

Accepted Answer

absorption

Question 19

The nucleus of the hydrogen atom consists of a single neutron.

Accepted Answer

A) True 
 B)False

Question 20

One star has a temperature of 10,000 K and another star has a temperature of 5,000 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) 16 times 
B) 2 times 
C) $1 × 10^{16}$ times 
D) 625 times 
E) 25 times 
A) 16 times 
B) 2 times 
C) $1 × 10^{16}$ times 
D) 625 times 
E) 25 times

The flow of energy is always from hot to cold and is called ___________.

In the diagram below, draw the transition that would emit a photon with the shortest wavelength.

A(n) ____ contains two or more atoms that are bound together by exchanging or sharing electrons with each other.

The Hδ line has a wavelength of 410.2 nm when observed in the laboratory. If the Hδ line appears in a stars spectrum at 410.0 nm, what is the radial velocity of the star

Blue stars emit most of their energy at shorter wavelengths than red stars.

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

Each element has its own set of characteristic absorption lines because

will give you information on the surface temperature of the star after you obtain the wavelength of maximum emission from the __ spectra.

The neutral hydrogen atom consists of

Two or more bound atoms is called a ________________.

The Kelvin temperature scale is measured in degrees.

The radiation emitted from a star has a maximum intensity at a wavelength of 500 nm. What is the temperature of this star

The Doppler effect states that the motion of any object can

The neutral carbon atom consists of

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

To create the above spectra, which of the following is NOT true

An atom gained an electron. Therefore it is now called an ion.

A blackbody's emission as observed through a low-density gas will produce a ____________________ spectrum.

The nucleus of the hydrogen atom consists of a single neutron.

One star has a temperature of 10,000 K and another star has a temperature of 5,000 K. Compared to the cooler star, how much more energy per second will the hotter star radiate from each square meter of its surface

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 flow of energy is always from hot to cold and is called ___________.

In the diagram below, draw the transition that would emit a photon with the shortest wavelength.

A(n) ____ contains two or more atoms that are bound together by exchanging or sharing electrons with each other.

The Hδ line has a wavelength of 410.2 nm when observed in the laboratory. If the Hδ line appears in a stars spectrum at 410.0 nm, what is the radial velocity of the star

Blue stars emit most of their energy at shorter wavelengths than red stars.

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

Each element has its own set of characteristic absorption lines because

______________ will give you information on the surface temperature of the star after you obtain the wavelength of maximum emission from the ________________ spectra.

The neutral hydrogen atom consists of

Two or more bound atoms is called a ________________.

The Kelvin temperature scale is measured in degrees.

The radiation emitted from a star has a maximum intensity at a wavelength of 500 nm. What is the temperature of this star

The Doppler effect states that the motion of any object can

The neutral carbon atom consists of

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

To create the above spectra, which of the following is NOT true

An atom gained an electron. Therefore it is now called an ion.

A blackbody's emission as observed through a low-density gas will produce a ____________________ spectrum.

The nucleus of the hydrogen atom consists of a single neutron.

One star has a temperature of 10,000 K and another star has a temperature of 5,000 K. Compared to the cooler star, how much more energy per second will the hotter star radiate from each square meter of its surface

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

will give you information on the surface temperature of the star after you obtain the wavelength of maximum emission from the __ spectra.