Question 1

An object that is a perfect absorber and emitter of radiation is called a(n) _______________.

Accepted Answer

blackbody,

Question 2

The amount of energy needed to move an electron from a lower energy level to a higher energy level is the ____.

Accepted Answer

A)  energy of the higher level 
B)  energy of the lower level 
C)  difference in energy between the two levels 
D)  product of the energies of the two levels 
E)  binding energy 
A)  energy of the higher level 
B)  energy of the lower level 
C)  difference in energy between the two levels 
D)  product of the energies of the two levels 
E)  binding energy

Question 3

An atom must emit a photon when a(n) ____.

Accepted Answer

A)  electron moves from a lower to a higher energy level 
B)  proton moves from a lower to a higher energy level 
C)  proton moves from a higher to a lower energy level 
D)  electron moves from a higher to a lower energy level 
E)  atom becomes ionized 
A)  electron moves from a lower to a higher energy level 
B)  proton moves from a lower to a higher energy level 
C)  proton moves from a higher to a lower energy level 
D)  electron moves from a higher to a lower energy level 
E)  atom becomes ionized

Question 4

Match between columns
                        Premises: An excited atom in which an electron is raised to a higher orbit.
The energy output of a surface is proportional to the temperature of the surface.
Each atom absorbs or emits a set of photon wavelengths unique to its element type.
The wavelength of maximum intensity depends on the surface temperature of the star.
The apparent change in the wavelength of a photon from a source caused by the relative motion of the source and the observer.

Accepted Answer

The Answer of the Stefan-Boltzmann law and Wien's Law and is...

Question 5

What physical situation is necessary to create an absorption spectrum?

Accepted Answer

Blackbody radiation creates a continuous

Question 6

A hot blackbody emits a(n) _______________ spectrum.

Accepted Answer

continuous

Question 7

The Kelvin temperature scale is based on the freezing point of water.

Accepted Answer

A) True 
 B)False

Question 8

The particle in an atom that carries a negative charge is the ____.

Accepted Answer

A)  nucleon 
B)  electron 
C)  negatron 
D)  proton 
E)  neutron 
A)  nucleon 
B)  electron 
C)  negatron 
D)  proton 
E)  neutron

Question 9

A certain type of atom can only absorb certain wavelengths.

Accepted Answer

A) True 
 B)False

Question 10

An atom that has lost or gained one or more electrons is called a(n) ____.

Accepted Answer

A)  ion 
B)  isotope 
C)  nucleus 
D)  molecule 
E)  electron 
A)  ion 
B)  isotope 
C)  nucleus 
D)  molecule 
E)  electron

Question 11

A(n) _______________ is an atom that has gained or lost one or more electrons.

Accepted Answer

The answer of A(n) _______________ is an atom that has...

Question 12

The Doppler effect is useful in measuring the ____.

Accepted Answer

A)  distance to an object 
B)  chemical composition of an object 
C)  temperature of an object 
D)  motion of an object across the line of sight of an observer 
E)  motion of an object toward or away from the observer 
A)  distance to an object 
B)  chemical composition of an object 
C)  temperature of an object 
D)  motion of an object across the line of sight of an observer 
E)  motion of an object toward or away from the observer

Question 13

Absorption lines are produced by ____.

Accepted Answer

A)  atoms that become ionized 
B)  electrons that transfer from a high energy level to a low energy level 
C)  electrons that transfer from a low energy level to a high energy level 
D)  the intensity of agitation of atoms in a hot gas 
E)  the motion of an object toward or away from the observer 
A)  atoms that become ionized 
B)  electrons that transfer from a high energy level to a low energy level 
C)  electrons that transfer from a low energy level to a high energy level 
D)  the intensity of agitation of atoms in a hot gas 
E)  the motion of an object toward or away from the observer

Question 14

Law enforcement officers use radar guns based on the Doppler effect to measure the speed of automobiles. Explain why the details of the Doppler effect make it desirable for the officers to park near the road in a place without curves.

Accepted Answer

The Doppler effect uses a measured chang

Question 15

A blackbody with absolute temperature T has a wavelength of peak intensity  λ max. If the temperature is tripled, the wavelength of peak intensity will become ________.

Accepted Answer

A)  λ max/18 
B)  λ max/9 
C)  λ max/3 
D)  3 λ max 
E)  9 λ max 
A)  λ max/18 
B)  λ max/9 
C)  λ max/3 
D)  3 λ max 
E)  9 λ max

Question 16

Most of the mass of an atom is ____.

Accepted Answer

A)  in the electron cloud 
B)  spread evenly through the atom 
C)  made up of electrons 
D)  concentrated in the nucleus 
E)  concentrated in a disk around the nucleus 
A)  in the electron cloud 
B)  spread evenly through the atom 
C)  made up of electrons 
D)  concentrated in the nucleus 
E)  concentrated in a disk around the nucleus

Question 17

The _______________ temperature scale is used in astronomy because it is based on absolute zero.

Accepted Answer

The answer of The _______________ temperature scale is used in...

Question 18

An atom can only have orbits of certain sizes, called _______________ orbits.

Accepted Answer

The answer of An atom can only have orbits of...

Question 19

If absorption lines of sodium are not present in a star's spectrum, the star must not contain any sodium.

Accepted Answer

A) True 
 B)False

Question 20

Name the three subatomic particles that make up an atom and state their electrical charges

Accepted Answer

Protons - have a pos

An object that is a perfect absorber and emitter of radiation is called a(n) _______________.

The amount of energy needed to move an electron from a lower energy level to a higher energy level is the ____.

An atom must emit a photon when a(n) ____.

What physical situation is necessary to create an absorption spectrum?

A hot blackbody emits a(n) _______________ spectrum.

The Kelvin temperature scale is based on the freezing point of water.

The particle in an atom that carries a negative charge is the ____.

A certain type of atom can only absorb certain wavelengths.

An atom that has lost or gained one or more electrons is called a(n) ____.

A(n) _______________ is an atom that has gained or lost one or more electrons.

The Doppler effect is useful in measuring the ____.

Absorption lines are produced by ____.

Law enforcement officers use radar guns based on the Doppler effect to measure the speed of automobiles. Explain why the details of the Doppler effect make it desirable for the officers to park near the road in a place without curves.

A blackbody with absolute temperature T has a wavelength of peak intensity λ _max. If the temperature is tripled, the wavelength of peak intensity will become ________.

Most of the mass of an atom is ____.

The _______________ temperature scale is used in astronomy because it is based on absolute zero.

An atom can only have orbits of certain sizes, called _______________ orbits.

If absorption lines of sodium are not present in a star's spectrum, the star must not contain any sodium.

Name the three subatomic particles that make up an atom and state their electrical charges

Here and Now

A User S Guide to the Sky

Moon Phases and Eclipses

Origins of Modern Astronomy

Gravity

Light and Telescopes

The Sun

Origin of the Solar System and Extrasolar Planets

Earth the Active Planet

The Moon and Mercury: Comparing Airless Worlds

Venus and Mars

Jupiter and Saturn

Uranus Neptune Pluto and the Kuiper Belt

Meteorites Asteroids and Comets

Astrobiology: Life on Other Worlds

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Exam 7: Atoms and Spectra

An object that is a perfect absorber and emitter of radiation is called a(n) _______________.

The amount of energy needed to move an electron from a lower energy level to a higher energy level is the ____.

An atom must emit a photon when a(n) ____.

What physical situation is necessary to create an absorption spectrum?

A hot blackbody emits a(n) _______________ spectrum.

The Kelvin temperature scale is based on the freezing point of water.

The particle in an atom that carries a negative charge is the ____.

A certain type of atom can only absorb certain wavelengths.

An atom that has lost or gained one or more electrons is called a(n) ____.

A(n) _______________ is an atom that has gained or lost one or more electrons.

The Doppler effect is useful in measuring the ____.

Absorption lines are produced by ____.

Law enforcement officers use radar guns based on the Doppler effect to measure the speed of automobiles. Explain why the details of the Doppler effect make it desirable for the officers to park near the road in a place without curves.

A blackbody with absolute temperature T has a wavelength of peak intensity λ max. If the temperature is tripled, the wavelength of peak intensity will become ________.

Most of the mass of an atom is ____.

The _______________ temperature scale is used in astronomy because it is based on absolute zero.

An atom can only have orbits of certain sizes, called _______________ orbits.

If absorption lines of sodium are not present in a star's spectrum, the star must not contain any sodium.

Name the three subatomic particles that make up an atom and state their electrical charges

Here and Now

A User S Guide to the Sky

Moon Phases and Eclipses

Origins of Modern Astronomy

Gravity

Light and Telescopes

The Sun

Origin of the Solar System and Extrasolar Planets

Earth the Active Planet

The Moon and Mercury: Comparing Airless Worlds

Venus and Mars

Jupiter and Saturn

Uranus Neptune Pluto and the Kuiper Belt

Meteorites Asteroids and Comets

Astrobiology: Life on Other Worlds

Filters

A blackbody with absolute temperature T has a wavelength of peak intensity λ _max. If the temperature is tripled, the wavelength of peak intensity will become ________.