Question 1

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

Accepted Answer

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

Question 2

The _______________ effect changes the observed wavelength of an emitted photon if the source is moving toward or away from the observer.

Accepted Answer

The answer of The _______________ effect changes the observed wavelength...

Question 3

An absorption spectrum is created when blackbody radiation passes through a cool gas.

Accepted Answer

A) True 
 B)False

Question 4

If the photons from blackbody radiator radiation pass through a cool gas, a(n)  ____ spectrum is produced.

Accepted Answer

A)   absorption
B)   emission
C)   continuous
D)   Doppler
E)   ionization

Question 5

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 6

Small differences in temperature between two stars produce small differences in the amount of energy they radiate.

Accepted Answer

A) True 
 B)False

Question 7

The photons coming from an excited gas create a(n)  ____ spectrum.

Accepted Answer

A)   absorption
B)   emission
C)   continuous
D)   Doppler
E)   ionization

Question 8

A spectrum that displays a smooth variation in intensity of all wavelengths without any breaks is a(n)  ____ spectrum.

Accepted Answer

A)   absorption
B)   emission
C)   continuous
D)   Doppler
E)   ionization

Question 9

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

Question 10

According to Wien's Law, a(n)  ____.

Accepted Answer

A)   hotter object will emit more short wavelength (bluer)  radiation
B)   hotter object will emit more long wavelength (redder)  radiation
C)   cooler object will produce less photons
D)   cooler object will produce more photons
E)   object will produce the same number of photons at different temperatures

Question 11

The type of element is determined by the number of ____.

Accepted Answer

A)   protons in the atom
B)   neutrons in the atom
C)   electrons in the atom
D)   electrons that have been removed from the atom
E)   protons that have been removed from the atom

Question 12

The amount of energy needed to pull an electron completely away from the nucleus is called the Coulomb energy.

Accepted Answer

A) True 
 B)False

Question 13

A hot blackbody emits a(n) _______________ spectrum.

Accepted Answer

continuous...

Question 14

Match between columns
                        Premises: The wavelength of maximum intensity depends on the surface temperature of the star.
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 apparent change in the wavelength of a photon from a source caused by the relative motion of the source and the observer.
An excited atom in which an electron is raised to a higher orbit.

Accepted Answer

The Answer of agitation and collision of atoms and the is...

Question 15

A continuous spectrum is created by a hot ionized gas.

Accepted Answer

A) True 
 B)False

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

Question 17

As a blackbody becomes hotter it will radiate ____.

Accepted Answer

A)   less energy, at a longer wavelength of maximum intensity
B)   less energy, at a shorter wavelength of maximum intensity
C)   more energy, at a longer wavelength of maximum intensity
D)   more energy, at a shorter wavelength of maximum intensity
E)   more energy, at a constant wavelength of maximum intensity

Question 18

What is binding energy, and what physical effect causes it?

Accepted Answer

Binding energy is the amount of energy n...

Question 19

Emission 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

Question 20

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

Accepted Answer

blackbody,...

Exam 7: Atoms and Spectra

As a blackbody becomes hotter it will radiate ____.

Correct Answer
verified

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

Correct Answer
verified

Emission lines are produced by ____.

Correct Answer
verified

If the photons from blackbody radiator radiation pass through a cool gas, a(n) ____ spectrum is produced.

Correct Answer
verified

An absorption spectrum is created when blackbody radiation passes through a cool gas.

Correct Answer
verified

A continuous spectrum is created by a hot ionized gas.

Correct Answer
verified

Small differences in temperature between two stars produce small differences in the amount of energy they radiate.

Correct Answer
verified

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

Correct Answer
verified

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

Correct Answer
verified

The type of element is determined by the number of ____.

Correct Answer
verified

The amount of energy needed to pull an electron completely away from the nucleus is called the Coulomb energy.

Correct Answer
verified

Match the physical law or activity below with the observable effect it produces.

A spectrum that displays a smooth variation in intensity of all wavelengths without any breaks is a(n) ____ spectrum.

Correct Answer
verified

According to Wien's Law, a(n) ____.

Correct Answer
verified

What is binding energy, and what physical effect causes it?

Correct Answer
verified
Binding energy is the amount of energy n...
View Answer

The _______________ effect changes the observed wavelength of an emitted photon if the source is moving toward or away from the observer.

Correct Answer
verified

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

Correct Answer
verified
blackbody,...
View Answer

The photons coming from an excited gas create a(n) ____ spectrum.

Correct Answer
verified

Most of the mass of an atom is ____.

Correct Answer
verified

A hot blackbody emits a(n) _______________ spectrum.

Correct Answer
verified
continuous...
View Answer

Exam 7: Atoms and Spectra

As a blackbody becomes hotter it will radiate ____.

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

Emission lines are produced by ____.

Correct AnswerverifiedShow Answer

If the photons from blackbody radiator radiation pass through a cool gas, a(n) ____ spectrum is produced.

Correct AnswerverifiedShow Answer

An absorption spectrum is created when blackbody radiation passes through a cool gas.

Correct AnswerverifiedShow Answer

A continuous spectrum is created by a hot ionized gas.

Correct AnswerverifiedShow Answer

Small differences in temperature between two stars produce small differences in the amount of energy they radiate.

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

The type of element is determined by the number of ____.

Correct AnswerverifiedShow Answer

The amount of energy needed to pull an electron completely away from the nucleus is called the Coulomb energy.

Correct AnswerverifiedShow Answer

Match the physical law or activity below with the observable effect it produces.

A spectrum that displays a smooth variation in intensity of all wavelengths without any breaks is a(n) ____ spectrum.

Correct AnswerverifiedShow Answer

According to Wien's Law, a(n) ____.

Correct AnswerverifiedShow Answer

What is binding energy, and what physical effect causes it?

Correct AnswerverifiedBinding energy is the amount of energy n...View AnswerShow Answer

The _______________ effect changes the observed wavelength of an emitted photon if the source is moving toward or away from the observer.

Correct AnswerverifiedShow Answer

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

Correct Answerverifiedblackbody,...View AnswerShow Answer

The photons coming from an excited gas create a(n) ____ spectrum.

Correct AnswerverifiedShow Answer

Most of the mass of an atom is ____.

Correct AnswerverifiedShow Answer

A hot blackbody emits a(n) _______________ spectrum.

Correct Answerverifiedcontinuous...View AnswerShow Answer

Correct Answer
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Correct Answer
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Correct Answer
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Correct Answer
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Binding energy is the amount of energy n...
View Answer

Correct Answer
verified

Correct Answer
verified
blackbody,...
View Answer

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified
continuous...
View Answer